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| Date | System | Genre | Article Added"Creation date" is a predefined property that corresponds to the date of the first revision of a subject and is provided by <a rel="nofollow" class="external text" href="https://www.semantic-mediawiki.org/wiki/Help:Special_properties">Semantic MediaWiki</a>. | Unreleased | |
|---|---|---|---|---|---|
| Generator Rex: Agent of Providence (Sep 1, 2011 prototype) | 1 September 2011 13:13:37 | Xbox 360 | Action Adventure | 25 September 2023 20:27:37 | - |
| Genji: Dawn of the Samurai (Jul 13, 2005 prototype) | 13 July 2005 03:43:45 | PlayStation 2 | Action | 20 March 2021 23:50:17 | - |
| Genji: Dawn of the Samurai (May 12, 2005 prototype) | 12 May 2005 22:59:29 | PlayStation 2 | Action | 20 March 2021 23:52:17 | - |
| Genma Onimusha (Dec 5, 2001 prototype) | 5 December 2001 | Xbox | Action-Adventure | 8 August 2021 21:50:52 | - |
| Genma Onimusha (Nov 9, 2001 prototype) | 9 November 2001 09:49:23 | Xbox | Action-Adventure | 18 September 2021 21:49:00 | - |
| Geometry Wars 3: Dimensions (Nov 10, 2014 prototype) | 10 November 2014 | Xbox 360 | Shooter | 16 August 2023 15:42:09 | - |
| Geometry Wars: Retro Evolved (Nov 2, 2005 prototype) | 2 November 2005 | Xbox 360 | Multidirectional shooter | 30 September 2023 19:55:38 | - |
| Geometry Wars: Retro Evolved (Unknow prototype) | Xbox 360 | Dual-Joystick Shooter | 15 December 2023 22:04:30 | - | |
| Geometry Wars: Retro Evolved 2 (Jun 13, 2008 prototype) | 13 June 2008 | Xbox 360 | Shoot Em Up | 16 August 2023 16:00:46 | - |
| Geon: Emotions (Aug 13, 2007 prototype) | 13 August 2007 | Xbox 360 | Action, Puzzle | 16 December 2023 15:27:18 | - |
| Getsu Fuuma Den (prototype) | NES | Action-Adventure | 18 November 2018 17:12:15 | - | |
| Gex (Alpha prototype) | 3DO | Platformer | 25 February 2021 18:20:23 | - | |
| Gex (Nov 14, 1995 prototype) | 14 November 1995 13:35:34 | PlayStation | Platformer | 8 November 2020 19:48:39 | - |
| Gex (Nov 18, 1995 prototype) | 18 November 1995 09:36:54 | Sega Saturn | Platformer | 8 May 2021 20:08:04 | - |
| Gex (Sep 19, 1995 prototype) | 19 September 1995 17:03:14 | PlayStation | Platformer | 17 April 2021 21:22:51 | - |
| Gex 3: Deep Cover Gecko (Dec 30, 1998 prototype) | 30 December 1998 14:48:20 | PlayStation | Action | 26 December 2018 04:46:58 | - |
| Gex 3: Deep Cover Gecko (Feb 25, 1999 prototype) | 25 February 1999 13:37:40 | PlayStation | Action | 28 January 2018 23:32:53 | - |
| Gex 3: Deep Cover Gecko (Feb 8, 1999 prototype) | 8 February 1999 03:10:00 | PlayStation | Platformer | 17 April 2021 21:21:51 | - |
| Gex Jr. (Jan 25, 2001 prototype) | 25 January 2001 | PlayStation | Platformer | 2 April 2022 20:37:20 | ✓ |
| Gex: Enter the Gecko (Jan 29, 1998 prototype) | 29 January 1998 10:49:34 | PlayStation | Platform | 1 January 2019 23:23:04 | - |
| Ghost House (Prototype) | Sega Master System | Action | 11 March 2017 08:39:51 | - | |
| Ghost Master: The Gravenville Chronicles (Jul 10, 2003 prototype) | 10 July 2003 13:49:06 | PlayStation 2 | Puzzle, strategy | 1 August 2021 21:51:37 | - |
| Ghost Master: The Gravenville Chronicles (Jul 11, 2003 prototype) | 11 July 2003 02:49:06 | PlayStation 2 | Puzzle, strategy | 29 November 2016 03:46:50 | - |
| Ghost Master: The Gravenville Chronicles (May 7, 2004 prototype) | 7 May 2004 | PlayStation 2 | Puzzle, strategy | 27 May 2019 20:54:39 | - |
| Ghost Master: The Gravenville Chronicles (Oct 31, 2004 prototype) | 31 October 2004 10:43:07 | Xbox | Puzzle, Strategy | 18 September 2021 21:40:42 | - |
| Ghost Rider (Dec 10, 2006 prototype) | 10 December 2006 17:47:47 | PlayStation 2 | Hack and Slash | 15 October 2017 14:30:34 | - |
| Ghost Rider (Dec 13, 2006 prototype) | 13 December 2006 14:22:16 | PlayStation 2 | Hack and Slash | 15 October 2017 14:31:33 | - |
| Ghost Rider (Dec 14, 2006 10.06 prototype) | 14 December 2006 10:06:13 | PlayStation 2 | Hack and Slash | 15 October 2017 14:32:31 | - |
| Ghost Rider (Dec 14, 2006 10.22 prototype) | 14 December 2006 10:22:42 | PlayStation 2 | Hack and Slash | 15 October 2017 14:33:48 | - |
| Ghost Rider (Dec 14, 2006 17.05 prototype) | 14 December 2006 17:05:32 | PlayStation 2 | Hack and Slash | 15 October 2017 14:49:42 | - |
| Ghost Rider (Dec 18, 2006 14.15 prototype) | 18 December 2006 14:15:03 | PlayStation 2 | Hack and Slash | 15 October 2017 14:50:51 | - |
| Ghost Rider (Dec 18, 2006 15.13 prototype) | 18 December 2006 15:13:11 | PlayStation 2 | Hack and Slash | 15 October 2017 14:52:17 | - |
| Ghost Rider (Dec 18, 2006 17.17 prototype) | 18 December 2006 17:17:43 | PlayStation 2 | Hack and Slash | 15 October 2017 14:54:48 | - |
| Ghost Rider (Dec 6, 2006 08.26 prototype) | 6 December 2006 08:26:23 | PlayStation 2 | Hack and Slash | 15 October 2017 14:23:12 | - |
| Ghost Rider (Dec 6, 2006 11.03 prototype) | 6 December 2006 11:03:35 | PlayStation 2 | Hack and Slash | 15 October 2017 14:25:13 | - |
| Ghost Rider (Dec 6, 2006 11.19 prototype) | 6 December 2006 11:19:09 | PlayStation 2 | Hack and Slash | 15 October 2017 14:26:32 | - |
| Ghost Rider (Dec 8, 2006 09.44 prototype) | 8 December 2006 09:44:56 | PlayStation 2 | Hack and Slash | 15 October 2017 14:27:27 | - |
| Ghost Rider (Dec 8, 2006 10.31 prototype) | 8 December 2006 10:31:23 | PlayStation 2 | Hack and Slash | 15 October 2017 14:28:30 | - |
| Ghost Rider (Dec 8, 2006 18.04 prototype) | 8 December 2006 18:04:22 | PlayStation 2 | Hack and Slash | 15 October 2017 14:29:38 | - |
| Ghost Rider (Jan 10, 2006 prototype) | 10 January 2006 | Xbox | Action | 28 September 2017 02:17:45 | ✓ |
| Ghost Rider (Jan 18, 2007 prototype) | 18 January 2007 16:49:03 | PlayStation Portable | Action | 25 December 2017 01:34:33 | - |
| Ghost Rider (Jan 2, 2007 prototype) | 2 January 2007 16:41:20 | PlayStation 2 | Hack and Slash | 15 October 2017 14:55:56 | - |
| Ghost Rider (Jan 3, 2007 prototype) | 3 January 2007 14:17:06 | PlayStation 2 | Hack and Slash | 15 October 2017 14:56:46 | - |
| Ghost Rider (Jan 5, 2006 prototype) | 5 January 2006 | Xbox | Action | 26 September 2017 23:10:16 | ✓ |
| Ghost Rider (Jan 5, 2007 build) | 5 January 2007 12:53:44 | PlayStation 2 | Hack and Slash | 15 October 2017 14:58:02 | - |
| Ghost Rider (Nov 10, 2006 prototype) | 10 November 2006 11:25:41 | PlayStation 2 | Hack and Slash | 15 October 2017 14:17:07 | - |
| Ghost Rider (Nov 13, 2006 prototype) | 13 November 2006 08:14:13 | PlayStation 2 | Hack and Slash | 15 October 2017 14:18:06 | - |
| Ghost Rider (Nov 14, 2006 prototype) | 14 November 2006 11:00:23 | PlayStation 2 | Hack and Slash | 15 October 2017 14:19:19 | - |
| Ghost Rider (Nov 17, 2006 prototype) | 17 November 2006 15:24:08 | PlayStation 2 | Hack and Slash | 15 October 2017 14:20:19 | - |
| Ghost Rider (Nov 2, 2006 prototype) | 2 November 2006 10:32:14 | PlayStation 2 | Hack and Slash | 15 October 2017 14:10:21 | - |
| Ghost Rider (Nov 27, 2006 prototype) | 27 November 2006 10:46:00 | PlayStation 2 | Hack and Slash | 15 October 2017 14:21:16 | - |
| Ghost Rider (Nov 3, 2006 prototype) | 3 November 2006 14:55:24 | PlayStation 2 | Hack and Slash | 15 October 2017 14:11:13 | - |
| Ghost Rider (Nov 6, 2006 prototype) | 6 November 2006 08:37:10 | PlayStation 2 | Hack and Slash | 15 October 2017 14:12:38 | - |
| Ghost Rider (Nov 7, 2005 prototype) | 7 November 2005 | Xbox | Action | 26 September 2017 23:12:39 | ✓ |
| Ghost Rider (Nov 8, 2006 14.24 prototype) | 8 November 2006 14:24:58 | PlayStation 2 | Hack and Slash | 15 October 2017 14:13:42 | - |
| Ghost Rider (Nov 8, 2006 16.27 prototype) | 8 November 2006 16:27:49 | PlayStation 2 | Hack and Slash | 15 October 2017 14:14:34 | - |
| Ghost Rider (Nov 9, 2006 prototype) | 9 November 2006 11:09:39 | PlayStation 2 | Hack and Slash | 15 October 2017 14:16:17 | - |
| Ghost Rider (Oct 12, 2006 prototype) | 12 October 2006 12:51:03 | PlayStation 2 | Hack and Slash | 15 October 2017 13:59:48 | - |
| Ghost Rider (Oct 13, 2006 prototype) | 13 October 2006 09:58:26 | PlayStation 2 | Hack and Slash | 15 October 2017 14:00:53 | - |
| Ghost Rider (Oct 16, 2006 prototype) | 16 October 2006 10:47:37 | PlayStation 2 | Hack and Slash | 15 October 2017 14:02:17 | - |
| Ghost Rider (Oct 17, 2006 prototype) | 17 October 2006 12:19:16 | PlayStation 2 | Hack and Slash | 15 October 2017 14:03:05 | - |
| Ghost Rider (Oct 18, 2006 prototype) | 18 October 2006 10:29:27 | PlayStation 2 | Hack and Slash | 15 October 2017 14:04:16 | - |
| Ghost Rider (Oct 19, 2006 prototype) | 19 October 2006 15:41:20 | PlayStation 2 | Hack and Slash | 16 December 2023 21:50:07 | - |
| Ghost Rider (Oct 20, 2006 prototype) | 20 October 2006 09:07:26 | PlayStation 2 | Hack and Slash | 15 October 2017 14:06:54 | - |
| Ghost Rider (Oct 23, 2006 prototype) | 23 October 2006 08:39:02 | PlayStation 2 | Hack and Slash | 15 October 2017 14:08:09 | - |
| Ghost Rider (Oct 26, 2006 prototype) | 26 October 2006 09:14:19 | PlayStation 2 | Hack and Slash | 15 October 2017 14:09:16 | - |
| Ghost Rider (Oct 3, 2006 prototype) | 3 October 2006 09:57:41 | PlayStation 2 | Hack and Slash | 15 October 2017 13:39:01 | - |
| Ghost Rider (Oct 4, 2006 prototype) | 4 October 2006 08:19:59 | PlayStation 2 | Hack and Slash | 15 October 2017 13:40:57 | - |
| Ghost Rider (Oct 5, 2006 prototype) | 5 October 2006 12:55:35 | PlayStation 2 | Hack and Slash | 15 October 2017 13:41:56 | - |
| Ghost Rider (Sep 18, 2006 prototype) | 18 September 2006 10:58:01 | PlayStation 2 | Hack and Slash | 15 October 2017 13:23:36 | - |
| Ghost Rider (Sep 19, 2006 10.21 prototype) | 19 September 2006 10:21:57 | PlayStation 2 | Hack and Slash | 15 October 2017 13:28:36 | - |
| Ghost Rider (Sep 19, 2006 12.18 prototype) | 19 September 2006 12:18:50 | PlayStation 2 | Hack and Slash | 15 October 2017 13:29:46 | - |
| Ghost Rider (Sep 19, 2006 19.04 prototype) | 19 September 2006 19:04:11 | PlayStation 2 | Hack and Slash | 15 October 2017 13:32:20 | - |
| Ghost Rider (Sep 21, 2006 prototype) | 21 September 2006 11:10:22 | PlayStation 2 | Hack and Slash | 15 October 2017 13:35:02 | - |
| Ghost Rider (Sep 25, 2006 prototype) | 25 September 2006 09:35:53 | PlayStation 2 | Hack and Slash | 15 October 2017 13:36:24 | - |
| Ghost Rider (Sep 27, 2006 prototype) | 27 September 2006 14:54:37 | PlayStation 2 | Hack and Slash | 15 October 2017 13:37:45 | - |
| Ghost in the Shell: Stand Alone Complex (Sep 10, 2004 prototype) | 10 September 2004 11:47:00 | PlayStation 2 | Third Person Shooter | 20 March 2021 23:43:44 | - |
| Ghost in the Shell: Stand Alone Complex (Sep 2, 2004 prototype) | 2 September 2004 07:29:00 | PlayStation 2 | Third Person Shooter | 20 March 2021 23:49:13 | - |
| Ghostbusters (May 1, 1990 prototype) | 1 May 1990 19:22:12 | Sega Mega Drive | Platformer | 2 May 2016 21:32:58 | - |
| Ghostbusters (Prototype) | NES | Action | 11 August 2017 21:35:28 | - | |
| Ghostbusters II (Game Boy Prototype) | Game Boy | Action | 1 January 2022 20:45:54 | - | |
| Ghostbusters: Sanctum of Slime (Feb 8, 2011 prototype) | 8 February 2011 | Xbox 360 | Shooter, Action-Adventure | 26 October 2023 21:56:50 | - |
| Ghostbusters: The Video Game (Jul 8, 2008 prototype) | 8 July 2008 17:56:01 | Xbox 360 | Action | 25 September 2023 21:07:05 | - |
| Ghostbusters: The Video Game (July 8, 2008) | 8 July 2008 | Xbox 360 | Third-person Shooter, Action-adventure | 11 September 2023 20:05:13 | - |
| Ghostbusters: The Video Game (Mar 23, 2009 prototype) | 23 March 2009 | Xbox 360 | Action-adventure, Third-person shooter | 25 December 2022 23:36:54 | - |
| Ghostbusters: The Video Game (May 1, 2009 prototype) | 1 May 2009 | Xbox 360 | Action-adventure, Third-person shooter | 25 December 2022 23:37:33 | - |
| Ghosthunter (Aug 22, 2003 prototype) | 22 August 2003 | PlayStation 2 | 1 October 2023 01:06:05 | - | |
| Ghosthunter (Jul 1, 2004 prototype) | 1 July 2004 17:26:54 | PlayStation 2 | Survival Horror | 20 March 2021 23:43:12 | - |
| Ghosthunter (May 4, 2004 prototype) | 4 May 2004 15:54:46 | PlayStation 2 | Survival Horror | 20 March 2021 23:40:23 | - |
| Ghoul Patrol (PAL build) | SNES | Action | 17 February 2019 23:37:56 | - | |
| Ghouls 'N Ghosts (prototype) | Sega Master System | Action | 11 March 2017 08:41:55 | - | |
| Ghouls 'n Ghosts (Jun 22, 1989 build) | 22 June 1989 16:25:00 | Sega Mega Drive | Platformer | 2 May 2016 22:09:06 | - |
| Giant Killers (Jan 9, 2001 prototype) | 9 January 2001 | Dreamcast | Sports - Soccer | 18 January 2017 22:53:48 | - |
| Giants: Citizen Kabuto (Sep 19, 2001 prototype) | 19 September 2001 11:28:29 | PlayStation 2 | Third Person Shooter | 20 March 2021 23:50:26 | - |
| Gimmick! (Japan prototype) | NES | Platform | 20 November 2016 00:32:58 | - | |
| Gin Rummy (Jun 10, 2008 prototype) | 10 June 2008 | Xbox 360 | Strategy, Card Game | 27 October 2023 21:13:29 | - |
| Gin Rummy (May 21, 2008 prototype) | 21 May 2008 | Xbox 360 | Gambling | 26 August 2023 00:57:11 | - |
| Gitaroo Man Wan (Feb 26, 2001 prototype) | 26 February 2001 04:23:50 | PlayStation 2 | Rhythm | 20 March 2021 23:58:57 | - |
| Gladiator: Sword of Vengeance (Jul 11, 2003 prototype) | 11 July 2003 13:38:36 | Xbox | Hack-And-Slash | 18 September 2021 21:46:33 | - |
| Gladiator: Sword of Vengeance (Jun 2, 2003 prototype) | 2 June 2003 16:53:48 | PlayStation 2 | Action Adventure | 20 March 2021 23:26:57 | - |
| Gladiator: Sword of Vengeance (Sep 21, 2003 prototype) | 21 September 2003 16:05:51 | Xbox | Hack-And-Slash | 18 September 2021 21:36:04 | - |
| Gladius (Aug 30, 2003 prototype) | 30 August 2003 02:28:21 | Xbox | Tactical RPG | 18 September 2021 21:40:19 | - |
| Gladius (Feb 26, 2003 prototype) | 26 February 2003 17:11:23 | PlayStation 2 | Turn Based Strategy | 20 March 2021 23:35:19 | - |
| Gladius (Jun 26, 2003 prototype) | 26 June 2003 | PlayStation 2 | Turn Based Strategy | 17 August 2022 14:01:51 | - |
| Gladius (May 21, 2003 prototype) | 21 May 2003 | Nintendo GameCube | Tactical RPG | 1 July 2023 18:13:37 | - |
| Gladius (May 24, 2003 prototype) | 24 May 2003 01:26:32 | Xbox | Tactical RPG | 18 September 2021 21:45:56 | - |
| Gladius (Sep 03, 2003 prototype) | 3 September 2003 | PlayStation 2 | Turn Based Strategy | 17 August 2022 14:07:26 | - |
| Glimmerati (Apr 20, 2005 prototype) | 20 April 2005 | N-Gage | Racing | 10 August 2017 18:36:57 | - |
| Glimmerati (May 10, 2005 prototype) | 10 May 2005 | N-Gage | Racing | 10 August 2017 18:37:44 | - |
| Global Defense (Prototype) | Sega Master System | Shooter | 11 March 2017 09:05:17 | - | |
| Global Domination (Dec 16, 1998 prototype) | 16 December 1998 16:00:32 | PlayStation | Strategy | 28 March 2019 00:15:23 | - |
| Global Domination (Jun 28, 1998 prototype) | 28 June 1998 21:31:04 | PlayStation | Turn Based Strategy | 28 March 2019 00:13:36 | - |
| Global Gladiators (Jan 18, 1994 prototype) | 18 January 1994 18:01:13 | Game Boy | Platformer | 24 June 2016 05:58:34 | ✓ |
| Global Gladiators (Jul 20, 1993 prototype) | 20 July 1993 11:23:26 | Game Boy | Platformer | 24 June 2016 06:04:10 | ✓ |
| Global Gladiators (Jul 9, 1993 prototype) | 9 July 1993 11:32:06 | NES | Platformer | 26 June 2016 01:30:07 | ✓ |
| Global Gladiators (Jun 16, 1993 prototype) | 16 June 1993 16:27:08 | NES | Platformer | 26 June 2016 01:31:55 | ✓ |
| Global Gladiators (Jun 30, 1993 prototype) | 30 June 1993 14:11:52 | NES | Platformer | 26 June 2016 01:36:02 | ✓ |
| Global Gladiators (May 28, 1993 prototype - A) | 28 May 1993 19:18:24 | NES | Platformer | 26 June 2016 01:34:23 | ✓ |
| Global Gladiators (May 28, 1993 prototype) | 28 May 1993 18:16:30 | NES | Platformer | 26 June 2016 01:33:15 | ✓ |
| Global Gladiators (Oct 10, 1993 prototype) | 4 October 1993 15:45:58 | Game Boy | Platformer | 24 June 2016 06:01:29 | ✓ |
| Global Gladiators (Sep 27, 1993 prototype) | 27 September 1993 16:49:36 | Game Boy | Platformer | 24 June 2016 06:06:23 | ✓ |
| Glover (Apr 2, 1999 prototype) | 2 April 1999 | PlayStation | Platform | 6 February 2023 01:57:06 | - |
| Glover (Apr 27, 1999 prototype) | 27 April 1999 | PlayStation | Platform | 5 February 2023 09:36:10 | - |
| Glover (Apr 7, 1999 prototype) | 7 April 1999 | PlayStation | Platform | 5 February 2023 09:54:08 | - |
| Glover (Feb 15, 1999 prototype) | 15 February 1999 | PlayStation | Platform | 5 February 2023 10:14:56 | - |
| Glover (Feb 5, 1998 prototype) | 5 February 1998 | Nintendo 64 | Platform | 10 February 2021 18:17:25 | - |
| Glover (Jan 12, 1999 prototype) | 12 January 1999 | PlayStation | Platform | 5 February 2023 08:45:41 | - |
| Glover (Jul 16, 1998 prototype) | 16 July 1998 | Nintendo 64 | Platform | 22 November 2016 22:34:02 | - |
| Glover (Jun 14, 1999 prototype) | 14 June 1999 | PlayStation | Platform | 5 February 2023 08:59:55 | - |
| Glover (Mar 11, 1997 prototype) | 24 October 1996 | PC | 3D Platformer | 5 March 2024 17:05:57 | - |
| Glover (Mar 12, 1999 prototype) | 12 March 1999 | PlayStation | Platform | 6 February 2023 01:42:00 | - |
| Glover (Mar 23, 1999 prototype) | 23 March 1999 | PlayStation | Platform | 6 February 2023 03:22:59 | - |
| Glover (Nov 8, 1999 build) | 8 November 1999 | PlayStation | Platform | 6 February 2023 06:50:18 | - |
| Glover (Oct 21, 1999 prototype) | 21 October 1999 | PlayStation | Platform | 6 February 2023 02:13:27 | - |
| Glover (Oct 22, 1999 prototype) | 22 October 1999 | PlayStation | Platform | 5 February 2023 17:42:42 | - |
| Glover (Oct 26, 1999 Prototype) | 26 October 1999 | PlayStation | Platform | 15 January 2024 02:33:36 | - |
| Glover (Sep 3, 1998 prototype) | 3 September 1998 | Nintendo 64 | Platform | 10 February 2021 18:12:20 | - |
| Glover 2 (Jan 29, 1999 prototype) | 29 January 1999 | Nintendo 64 | Platform | 28 March 2023 17:53:13 | ✓ |
| Glover 2 (Prototype A) | Nintendo 64 | Platform | 22 November 2016 22:23:43 | ✓ | |
| Glover 2 (Prototype B) | Nintendo 64 | Platform | 22 November 2016 22:24:19 | ✓ | |
| Gnomes (Mar 7, 1994 prototype) | 7 March 1994 17:44:47 | Philips CD-i | Reference | 17 April 2021 20:58:51 | - |
| Go (Jul 22, 2009 prototype) | 22 July 2009 | Xbox 360 | Board Game | 26 August 2023 00:58:23 | - |
| Go Vacation (Debug prototype) | Nintendo Wii | Minigames | 22 September 2023 16:14:33 | - | |
| Go! Go! Break Steady (Feb 6, 2008 prototype) | 6 February 2008 | Xbox 360 | Rhythm | 16 August 2023 15:33:45 | - |
| GoDai: Elemental Force (Sep 6, 2001 prototype) | 6 September 2001 14:06:36 | PlayStation 2 | Beat-em-Up | 20 March 2021 23:49:13 | - |
| Goat Simulator (Nov 11, 2014 prototype) | 11 November 2014 | Xbox 360 | Simulation | 16 August 2023 15:48:15 | - |
| God Hand (Aug 9, 2006 prototype) | 9 August 2006 16:24:09 | PlayStation 2 | Action Adventure | 20 March 2021 23:25:05 | - |
| God Hand (Jun 20, 2006 prototype) | 20 June 2006 23:28:48 | PlayStation 2 | Action Adventure | 20 March 2021 23:59:15 | - |
| God of War (Dec 23, 2004 prototype) | 23 December 2004 15:02:38 | PlayStation 2 | Hack and slash | 5 April 2021 00:48:24 | - |
| God of War II (Feb 2, 2007 prototype) | 2 February 2007 23:16:10 | PlayStation 2 | Action Adventure | 20 March 2021 23:50:06 | - |
| God of War II (Jan 25, 2007 prototype) | PlayStation 2 | hack and slash | 26 March 2021 20:58:38 | - | |
| God of War II (May 5, 2006 prototype) | 5 May 2006 10:59:32 | PlayStation 2 | Action Adventure | 20 March 2021 23:58:28 | - |
| God of War III (E3 2009 prototype) | PlayStation 3 | Action-adventure, hack and slash | 6 April 2024 12:37:33 | - | |
| God of War: Ascension (Multiplayer Beta EU) | PlayStation 3 | Action-adventure, hack and slash | 6 April 2024 11:53:10 | - | |
| God of War: Chains of Olympus (Feb 1, 2008 prototype) | 1 February 2008 13:44:42 | PlayStation Portable | Action | 1 August 2017 20:48:20 | - |
| God of War: Chains of Olympus (Feb 3, 2008 prototype) | 3 February 2008 | PlayStation Portable | 16 June 2020 13:03:57 | - | |
| Gods (Sep 10, 1992 prototype) | 10 September 1992 | SNES | Action | 19 November 2016 23:50:03 | - |
| Godzilla: Unleashed (Sep 19, 2007 prototype) | 19 September 2007 | Nintendo Wii | Fighting | 25 December 2022 23:23:17 | - |
| Gold Fever (May 14, 2010 prototype) | 14 May 2010 | PlayStation Portable | Puzzle | 25 March 2024 11:03:41 | - |
| Golden Axe (Jun 9, 2007 prototype) | 9 June 2007 | Xbox 360 | Beat Em Up | 16 August 2023 13:27:28 | - |
| Golden Axe (Nov 22, 1989 prototype) | 22 November 1989 10:24:08 | Sega Mega Drive | Beatem Up | 2 May 2016 21:45:27 | - |
| Golden Axe (Oct 14, 1989 prototype) | 14 October 1989 | Sega Mega Drive | Beatem Up | 19 March 2018 23:29:45 | - |
| Golden Axe (Sega Master System Demo) | Sega Master System | 2 April 2023 19:21:38 | - | ||
| Golden Axe II (Prototype) | Sega Mega Drive | Beat 'em up | 27 March 2023 16:31:20 | - | |
| Golden Axe III (Europe) | Sega Mega Drive | Beat 'em Up | 7 December 2016 22:56:44 | ✓ | |
| Golden Axe: Beast Rider (Aug 20, 2008 prototype) | 20 August 2008 18:14:10 | PlayStation 3 | 4 April 2023 01:03:06 | - | |
| Golden Axe: Beast Rider (Jul 10, 2008 prototype) | 10 July 2008 | Xbox 360 | Hack & Slash | 25 December 2022 23:36:55 | - |
| Golden Axe: Beast Rider (Jul 2, 2008 prototype) | 2 July 2008 | Xbox 360 | Hack & Slash | 25 December 2022 23:36:42 | - |
| Golden Axe: Beast Rider (Jul 21, 2008 prototype) | 11 July 2008 | Xbox 360 | Golden_Axe-2008-07-21-Title.PNG | 6 May 2019 06:09:07 | - |
| Golden Axe: Beast Rider (Jun 21, 2008 prototype) | 21 June 2008 | Xbox 360 | Hack & Slash | 25 December 2022 23:38:24 | - |
| Golden Axe: Beast Rider (Sep 13, 2007 prototype) | 13 September 2007 | Xbox 360 | Hack & Slash | 25 December 2022 23:35:59 | - |
| Golden Axe: The Duel (Feb 19, 1996 prototype) | 19 February 1996 17:06:54 | Sega Saturn | Fighting | 17 April 2021 21:00:12 | - |
| Golden Oldies 2: Blockbuster and Bughunt (Apr 26, 1996 prototype) | 26 April 1996 | Philips CD-i | FMV | 2 August 2017 18:49:21 | - |
| GoldenEye 007 (Nov 16, 2007 prototype) | 16 November 2007 | Xbox 360 | FPS | 16 August 2023 15:29:09 | ✓ |
| GoldenEye 007: Reloaded (Apr 14, 2011 prototype) | 14 April 2011 | Xbox 360 | 28 December 2022 04:23:18 | - | |
| GoldenEye 007: Reloaded (Apr 26, 2011 prototype) | 26 April 2011 06:10:58 | Xbox 360 | First Person Shooter | 25 September 2023 20:50:46 | - |
| GoldenEye 007: Reloaded (Aug 26, 2011 prototype) | 26 August 2011 01:37:30 | Xbox 360 | First Person Shooter | 25 September 2023 21:17:59 | - |
| GoldenEye 007: Reloaded (Jul 15, 2011 prototype) | 15 July 2011 13:38:01 | Xbox 360 | First Person Shooter | 25 September 2023 21:15:33 | - |
| GoldenEye 007: Reloaded (Jun 1, 2011 prototype) | 1 June 2011 10:07:47 | Xbox 360 | First Person Shooter | 25 September 2023 20:07:00 | - |
| GoldenEye 007: Reloaded (Nov 2, 2011 prototype) | 2 November 2011 12:05:18 | Xbox 360 | First Person Shooter | 25 September 2023 20:11:02 | - |
| GoldenEye 007: Reloaded (Nov 7, 2011 prototype) | 7 November 2011 | Xbox 360 | FPS | 2 December 2019 18:23:13 | - |
| GoldenEye 007: Reloaded (Oct 20, 2011 prototype) | 20 October 2011 20:39:21 | Xbox 360 | First Person Shooter | 25 September 2023 21:07:02 | - |
| GoldenEye 007: Reloaded (Oct 5, 2011 prototype) | 5 October 2011 13:36:40 | Xbox 360 | First Person Shooter | 25 September 2023 20:09:06 | - |
| GoldenEye: Rogue Agent (Oct 18, 2004 prototype) | 18 October 2004 17:48:35 | PlayStation 2 | First person shooter | 20 March 2021 23:42:50 | - |
| Goldeneye 007 (Jun 18, 2009 prototype) | 18 June 2009 | Nintendo Wii | FPS | 11 November 2022 00:15:36 | - |
| Goldeneye 007 (Sep 7, 2010 prototype) | 7 September 2010 15:39:35 | Nintendo Wii | FPS | 10 November 2022 12:38:24 | - |
| Golf Magazine: 36 Great Holes Starring Fred Couples (Dec 13, 1994 prototype) | 13 December 1994 13:26:28 | Sega 32X | Sports - Golf | 2 May 2016 09:15:20 | - |
| Golf Magazine: 36 Great Holes Starring Fred Couples (Dec 14, 1994 prototype) | 14 December 1994 21:08:38 | Sega 32X | Sports - Golf | 2 May 2016 09:17:00 | - |
| Golf Magazine: 36 Great Holes Starring Fred Couples (Dec 19, 1994 prototype) | 19 December 1994 22:10:22 | Sega 32X | Sports - Golf | 2 May 2016 09:24:44 | - |
| Golf Magazine: 36 Great Holes Starring Fred Couples (Dec 2, 1994 prototype) | 2 December 1994 13:30:40 | Sega 32X | Sports - Golf | 2 May 2016 08:59:56 | - |
| Golf Magazine: 36 Great Holes Starring Fred Couples (Dec 21, 1994 PAL prototype) | 21 December 1994 12:05:28 | Sega 32X | Sports - Golf | 2 May 2016 12:44:21 | - |
| Golf Magazine: 36 Great Holes Starring Fred Couples (Dec 21, 1994 prototype) | 21 December 1994 09:41:40 | Sega 32X | Sports - Golf | 2 May 2016 12:46:51 | - |
| Golf Magazine: 36 Great Holes Starring Fred Couples (Dec 3, 1994 prototype) | 3 December 1994 22:39:08 | Sega 32X | Sports - Golf | 2 May 2016 09:01:08 | - |
| Golf Magazine: 36 Great Holes Starring Fred Couples (Dec 6, 1994 prototype) | 6 December 1994 11:45:02 | Sega 32X | Sports - Golf | 2 May 2016 09:03:22 | - |
| Golf Magazine: 36 Great Holes Starring Fred Couples (Jul 6, 1994 prototype) | 6 July 1994 13:47:22 | Sega 32X | Sports - Golf | 2 May 2016 07:44:31 | - |
| Golf Magazine: 36 Great Holes Starring Fred Couples (Nov 1, 1994 prototype) | 1 November 1994 13:52:46 | Sega 32X | Sports - Golf | 2 May 2016 12:49:56 | - |
| Golf Magazine: 36 Great Holes Starring Fred Couples (Nov 10, 1994 prototype) | 10 November 1994 10:11:44 | Sega 32X | Sports - Golf | 2 May 2016 12:54:45 | - |
| Golf Magazine: 36 Great Holes Starring Fred Couples (Nov 16, 1994 prototype) | 16 November 1994 00:42:40 | Sega 32X | Sports - Golf | 2 May 2016 12:55:18 | - |
| Golf Magazine: 36 Great Holes Starring Fred Couples (Nov 18, 1994 prototype) | 18 November 1994 12:20:58 | Sega 32X | Sports - Golf | 2 May 2016 12:56:07 | - |
| Golf Magazine: 36 Great Holes Starring Fred Couples (Nov 19, 1994 prototype) | 19 November 1994 02:45:06 | Sega 32X | Sports - Golf | 2 May 2016 13:38:57 | - |
| Golf Magazine: 36 Great Holes Starring Fred Couples (Nov 21, 1994 prototype) | 21 November 1994 15:19:24 | Sega 32X | Sports - Golf | 2 May 2016 13:53:19 | - |
| Golf Magazine: 36 Great Holes Starring Fred Couples (Nov 22, 1994 prototype B) | 22 November 1994 15:37:30 | Sega 32X | Sports - Golf | 2 May 2016 13:54:47 | - |
| Golf Magazine: 36 Great Holes Starring Fred Couples (Nov 22, 1994 prototype) | 22 November 1994 07:32:54 | Sega 32X | Sports - Golf | 2 May 2016 13:55:45 | - |
| Golf Magazine: 36 Great Holes Starring Fred Couples (Nov 23, 1994 prototype) | 23 November 1994 10:43:32 | Sega 32X | Sports - Golf | 2 May 2016 13:56:27 | - |
| Golf Magazine: 36 Great Holes Starring Fred Couples (Nov 26, 1994 prototype) | 25 November 1994 23:52:52 | Sega 32X | Sports - Golf | 2 May 2016 15:43:21 | - |
| Golf Magazine: 36 Great Holes Starring Fred Couples (Nov 27, 1994 prototype) | 26 November 1994 20:53:10 | Sega 32X | Sports - Golf | 2 May 2016 15:45:46 | - |
| Golf Magazine: 36 Great Holes Starring Fred Couples (Nov 28, 1994 prototype B) | 28 November 1994 18:54:48 | Sega 32X | Sports - Golf | 2 May 2016 14:00:24 | - |
| Golf Magazine: 36 Great Holes Starring Fred Couples (Nov 28, 1994 prototype) | 28 November 1994 08:52:18 | Sega 32X | Sports - Golf | 2 May 2016 14:01:07 | - |
| Golf Magazine: 36 Great Holes Starring Fred Couples (Nov 29, 1994 prototype B) | 29 November 1994 15:57:40 | Sega 32X | Sports - Golf | 2 May 2016 13:37:25 | - |
| Golf Magazine: 36 Great Holes Starring Fred Couples (Nov 29, 1994 prototype) | 29 November 1994 10:31:20 | Sega 32X | Sports - Golf | 2 May 2016 14:01:42 | - |
| Golf Magazine: 36 Great Holes Starring Fred Couples (Nov 3, 1994 prototype) | 3 November 1994 10:10:14 | Sega 32X | Sports - Golf | 2 May 2016 12:50:33 | - |
| Golf Magazine: 36 Great Holes Starring Fred Couples (Nov 30, 1994 prototype) | 30 November 1994 15:52:16 | Sega 32X | Sports - Golf | 2 May 2016 14:02:27 | - |
| Golf Magazine: 36 Great Holes Starring Fred Couples (Nov 5, 1994 prototype) | 5 November 1994 14:15:04 | Sega 32X | Sports - Golf | 2 May 2016 12:52:06 | - |
| Golf Magazine: 36 Great Holes Starring Fred Couples (Nov 7, 1994 prototype) | 7 November 1994 12:13:34 | Sega 32X | Sports - Golf | 2 May 2016 12:52:54 | - |
| Golf Magazine: 36 Great Holes Starring Fred Couples (Nov 8, 1994 prototype) | 8 November 1994 23:27:08 | Sega 32X | Sports - Golf | 2 May 2016 12:54:01 | - |
| Golf Magazine: 36 Great Holes Starring Fred Couples (Oct 11, 1994 prototype) | 11 October 1994 16:10:50 | Sega 32X | Sports - Golf | 2 May 2016 14:03:33 | - |
| Golf Magazine: 36 Great Holes Starring Fred Couples (Oct 17, 1994 prototype) | 17 October 1994 20:39:34 | Sega 32X | Sports - Golf | 2 May 2016 14:04:04 | - |
| Golf Magazine: 36 Great Holes Starring Fred Couples (Oct 18, 1994 prototype) | 20 October 1994 09:48:08 | Sega 32X | Sports - Golf | 2 May 2016 15:49:51 | - |
| Golf Magazine: 36 Great Holes Starring Fred Couples (Oct 24, 1994 prototype) | 24 October 1994 09:28:18 | Sega 32X | Sports - Golf | 2 May 2016 14:05:32 | - |
| Golf Magazine: 36 Great Holes Starring Fred Couples (Oct 26, 1994 prototype) | 26 October 1994 10:09:32 | Sega 32X | Sports - Golf | 2 May 2016 14:05:58 | - |
| Golf: Tee It Up! (Mar 19, 2008 prototype) | 19 March 2008 | Xbox 360 | Sports - Golf | 16 August 2023 15:38:11 | - |
| Golf: Tee It Up! (May 9, 2008 prototype) | 9 May 2008 | Xbox 360 | Golf | 27 October 2023 21:22:04 | - |
| Golfamania (Prototype) | Sega Master System | Sports | 11 March 2017 19:51:01 | - | |
| Good Luck, Charlie Brown (Apr 18, 1984 prototype) | 18 April 1984 | Atari 2600 | 27 December 2022 03:40:46 | ✓ | |
| Gothic (Dec 21, 2000 prototype) | 21 December 2000 18:00:42 | PC | Role playing | 15 October 2017 15:06:57 | - |
| Gothic (Jan 31, 2001 demo) | 31 January 2001 | PC | Role playing | 5 January 2023 03:09:55 | - |
| Gothic Sequel (Oct 31, 2001 prototype) | 31 October 2001 23:00:00 | PC | Role playing | 15 October 2017 15:15:16 | ✓ |
| Grabbed by the Ghoulies (Aug 26, 2003 prototype) | 26 August 2003 21:35:54 | Xbox | Action, Brawler | 10 November 2023 21:10:25 | - |
| Grabbed by the Ghoulies (Aug 28, 2003 prototype) | 28 August 2003 09:14:35 | Xbox | Action | 5 June 2019 02:46:19 | - |
| Gradius III and IV (Sep 11, 2000 prototype) | 11 September 2000 17:12:28 | PlayStation 2 | Shoot-em-Up | 26 November 2020 21:09:02 | - |
| Gradius V (Apr 28, 2004 prototype) | 28 April 2004 | PlayStation 2 | 12 August 2023 03:29:50 | - | |
| Graffiti Kingdom (Feb 9, 2005 prototype) | 9 February 2005 10:54:00 | PlayStation 2 | Role Playing | 20 March 2021 23:53:49 | - |
| Gran Turismo (Aug 2, 1997 prototype) | 2 August 1997 23:55:35 | PlayStation | Racing | 3 February 2021 20:51:49 | - |
| Gran Turismo (Jul 29, 1997 prototype) | 29 July 1997 | PlayStation | 18 September 2022 02:16:24 | - | |
| Gran Turismo (Nov 13, 1997 prototype) | 13 November 1997 | PlayStation | Racing | 24 January 2021 19:45:38 | - |
| Gran Turismo (Oct 27, 1997 prototype) | 27 October 1997 | PlayStation | Racing | 3 February 2021 19:34:24 | - |
| Gran Turismo 2 (Dec 22, 1999 prototype) | 22 December 1999 | PlayStation | Racing | 7 March 2023 21:12:22 | - |
| Gran Turismo 2 (Nov 30, 1999 prototype) | 30 November 1999 | PlayStation | Racing | 7 July 2023 05:14:20 | - |
| Gran Turismo 2000 (Feb 13, 2000 demo) | 13 February 2000 | PlayStation 2 | Racing | 5 February 2021 18:12:38 | - |
| Gran Turismo 3 A-Spec (May 30, 2001 prototype) | 30 May 2001 05:10:17 | PlayStation 2 | Racing | 13 October 2023 21:33:44 | - |
| Gran Turismo 3 A-Spec (Oct 9, 2000 prototype) | 9 October 2000 | PlayStation 2 | Driving/Racing, Simulation | 13 October 2023 20:06:52 | - |
| Gran Turismo 3: A-Spec (Apr 18, 2001 prototype) | 18 April 2001 11:25:56 | PlayStation 2 | Racing | 23 December 2020 17:13:44 | - |
| Gran Turismo 3: A-Spec (Oct 10, 2000 prototype) | 10 October 2000 | PlayStation 2 | Racing | 28 December 2020 20:06:06 | - |
| Gran Turismo 4 (Mar 30, 2004 demo) | 30 March 2004 21:33:43 | PlayStation 2 | Racing | 8 October 2021 03:26:42 | - |
| Gran Turismo 4 (May 1, 2006 prototype) | 1 May 2006 | PlayStation 2 | Driving/Racing, Simulation | 22 March 2021 20:41:26 | - |
| Gran Turismo 4: Prologue (Sep 25, 2003 prototype) | 25 September 2003 | PlayStation 2 | Racing | 2 January 2021 12:09:29 | - |
| Gran Turismo 5 (Sep 16, 2010 prototype) | 16 September 2010 01:08:49 | PlayStation 3 | Racing | 21 September 2021 12:22:27 | - |
| Gran Turismo 6 (Aug 20, 2013 prototype) | 20 August 2013 | PlayStation 3 | Driving/Racing | 7 February 2024 10:12:34 | - |
| Gran Turismo Concept Airtrek Special Edition (demo build) | 16 May 2002 23:55:08 | PlayStation 2 | Racing | 4 March 2021 21:32:31 | - |
| Gran Turismo Concept: 2002 Tokyo-Geneva (Jun 23, 2002 prototype) | 23 June 2002 | PlayStation 2 | 25 November 2023 19:26:10 | - | |
| Granada (REV01 prototype) | Sega Mega Drive | Shooter | 26 December 2019 23:55:49 | - | |
| Grand Slam (Aug 8, 1996 prototype) | 8 August 1996 23:08:34 | PlayStation | Sports - Baseball | 17 April 2021 21:16:26 | - |
| Grand Slam Tennis (Jul 2, 2009 prototype) | 2 July 2009 01:30:15 | Xbox 360 | Sports, Tennis | 7 November 2023 15:35:42 | ✓ |
| Grand Theft Auto (Feb 2, 1995 prototype) | 2 February 1995 | PC | Simulation | 22 August 2022 05:44:00 | - |
| Grand Theft Auto (Nov 11, 1994 prototype) | 11 November 1994 | PC | Simulation | 22 August 2022 05:45:17 | - |
| Grand Theft Auto (PlayStation prototype) | PlayStation | Action-adventure | 29 March 2023 07:32:48 | - | |
| Grand Theft Auto 2 (Apr 7, 2000 prototype) | 7 April 2000 01:32:32 | Dreamcast | Action | 18 September 2021 19:40:46 | - |
| Grand Theft Auto 2 (Sep 10, 1999 prototype) | 10 September 1999 13:16:30 | PlayStation | Action Adventure | 17 April 2021 21:17:30 | - |
| Grand Theft Auto III (Apr 16, 2002 Prototype) | 16 April 2002 | Game Boy Advance | 7 November 2023 23:29:15 | ✓ | |
| Grand Theft Auto: Chinatown Wars (Aug 31, 2009 prototype) | 31 August 2009 17:40:17 | PlayStation Portable | Shooter | 5 February 2023 16:25:25 | - |
| Grand Theft Auto: Chinatown Wars (Sep 15, 2009 prototype) | 15 September 2009 12:42:47 | PlayStation Portable | Shooter | 5 February 2023 20:23:51 | - |
| Grand Theft Auto: Liberty City Stories (Mar 22, 2006 build) | 22 March 2006 16:20:58 | PlayStation Portable | Action | 7 March 2023 03:25:06 | - |
| Grandia (Aug 11, 1999 prototype) | 11 August 1999 10:28:56 | PlayStation | Role Playing | 17 April 2021 21:18:06 | - |
| Grandia II (Jun 1, 2000 demo) | 1 June 2000 23:11:02 | Dreamcast | Role playing | 24 December 2017 22:28:08 | - |
| Grandia II (Mar 8, 2000 prototype) | 8 March 2000 | Dreamcast | Role playing | 16 June 2023 15:17:20 | - |
| Grandia Xtreme (Jul 30, 2002 prototype) | 30 July 2002 19:42:21 | PlayStation 2 | Role Playing | 20 March 2021 23:46:52 | - |
| Grandia Xtreme (Jun 12, 2002 prototype) | 12 June 2002 15:18:16 | PlayStation 2 | Role Playing | 20 March 2021 23:46:22 | - |
| Granhistoria: Genshi Sekaiki (Mar 16, 1995 prototype) | 16 March 1995 | SNES | Role Playing | 7 December 2016 19:37:31 | - |
| Gravity Crash (Oct 6, 2009 prototype) | 6 October 2009 | PlayStation 3 | Action, Shooter, Dual-Joystick Shooter | 7 February 2024 11:46:12 | - |
| Gravity Games Bike: Street Vert Dirt (Apr 29, 2002 prototype) | 29 April 2002 05:20:42 | PlayStation 2 | Sports - Biking | 19 March 2020 04:39:23 | - |
| Great Golf (Prototype) | Sega Master System | Sports - Golf | 11 March 2017 09:08:26 | - | |
| Greed Corp (Dec 10, 2009 prototype) | 10 December 2009 13:04:50 | Xbox 360 | Strategy | 19 April 2024 05:49:36 | - |
| Greed Corp (Jan 21, 2010 prototype) | 21 January 2010 | Xbox 360 | Strategy | 16 August 2023 15:34:17 | - |
| Green Lantern: Rise of the Manhunters (Feb 11, 2010 prototype) | 11 February 2010 17:36:15 | Nintendo Wii | 2 August 2022 12:45:19 | - | |
| Green Lantern: Rise of the Manhunters (Feb 15, 2010 prototype) | 15 February 2010 14:25:02 | Nintendo Wii | 1 August 2022 20:28:24 | - | |
| Greg Hastings Paintball 2 (Apr 26, 2010 prototype) | 26 April 2010 21:23:45 | Xbox 360 | First Person Shooter | 25 September 2023 21:08:09 | - |
| Greg Hastings Paintball 2 (Aug 23, 2010 prototype) | 23 August 2010 23:04:19 | Xbox 360 | First Person Shooter | 25 September 2023 20:53:53 | - |
| Greg Hastings Paintball 2 (Feb 10, 2011 prototype) | 10 February 2011 | Xbox 360 | Sports, Simulation, First-Person Shooter | 24 November 2023 18:57:46 | - |
| Greg Hastings Paintball 2 (Nov 12, 2010 prototype) | 12 November 2010 20:52:44 | Xbox 360 | First Person Shooter | 25 September 2023 20:17:56 | - |
| Greg Hastings Paintball 2 (Sep 8, 2010 prototype) | 8 September 2010 | Xbox 360 | Sports, Simulation, First-Person Shooter | 24 November 2023 18:08:07 | - |
| Greg Hastings Tournament Paintball (Mar 25, 2005 prototype) | 25 March 2005 17:57:41 | Xbox | Action | 3 June 2019 12:22:44 | - |
| Greg Hastings Tournament Paintball 2 (Sep 15, 2005 prototype) | 15 September 2005 15:12:08 | Xbox | Action | 3 June 2019 12:26:11 | - |
| Greg Hastings' Tournament Paintball Max'd (Jul 15, 2005 prototype) | 15 July 2005 05:05:15 | Xbox | First-Person Shooter | 18 September 2021 21:54:03 | - |
| Gremlins 2: The New Batch (European prototype) | NES | Platformer | 10 January 2024 17:57:44 | - | |
| Gremlins 2: The New Batch (US prototype) | NES | Platformer | 28 March 2023 17:36:29 | - | |
| Gremlins: Stripe vs. Gizmo (Feb 19, 2002 prototype) | 19 February 2002 14:17:02 | Game Boy Advance | Platform | 27 September 2023 15:05:35 | - |
| Grid (Apr 29, 2008 prototype) | 29 April 2008 | Xbox 360 | Racing | 25 December 2022 23:38:01 | - |
| Grid Runner (Apr 22, 1996 prototype) | 22 April 1996 15:56:38 | Sega Saturn | Action | 17 April 2021 20:59:17 | - |
| Grid Runner (Jul 27, 1996 prototype) | 27 July 1996 13:28:41 | Sega Saturn | Action | 8 April 2021 19:08:22 | - |
| Griff Wild (Prototype) | Nintendo DS | FPS | 15 October 2023 14:35:32 | ✓ | |
| GrimGrimoire (Apr 4, 2007 prototype) | 4 April 2007 14:54:42 | PlayStation 2 | Real Time Strategy | 20 March 2021 23:57:46 | - |
| GripShift (Oct 10, 2007 prototype) | 10 October 2007 | Xbox 360 | Racing | 16 August 2023 15:52:51 | - |
| Group S Challenge (Mar 27, 2003 prototype) | 27 March 2003 09:41:38 | Xbox | Racing | 18 September 2021 21:35:17 | - |
| Growl (Aug 26, 1991 prototype) | 26 August 1991 14:13:54 | Sega Mega Drive | Beat Em' Up | 27 May 2016 19:43:39 | - |
| Growlanser II: The Sense of Justice (Feb 12, 2004 prototype) | 12 February 2004 13:42:52 | PlayStation 2 | Turn Based Strategy | 20 March 2021 23:33:16 | - |
| Growlanser II: The Sense of Justice (Sep 16, 2003 prototype) | 16 September 2003 12:04:30 | PlayStation 2 | Turn Based Strategy | 20 March 2021 23:44:13 | - |
| Guacamelee! (Mar 6, 2013 prototype) | 6 March 2013 | PlayStation Vita | Brawler, Platformer, Action-Adventure | 16 December 2023 21:10:38 | - |
| Guardians of Middle-earth (Sep 5, 2012 prototype) | 5 September 2012 | PlayStation 3 | MOBA | 16 February 2024 08:44:14 | - |
| Guilty Gear 2: Overture (DLC New Costume "Ex. Sol" prototype) | Xbox 360 | Action, Strategy | 9 March 2024 19:39:21 | - | |
| Guilty Gear 2: Overture (DLC New Master "Raven" prototype) | Xbox 360 | Action, Strategy | 9 March 2024 19:56:20 | - | |
| Guilty Gear 2: Overture (DLC New Stage "Holy Knight's Fortress" prototype) | Xbox 360 | Action, Strategy | 9 March 2024 19:49:43 | - | |
| Guilty Gear 2: Overture (Jul 10, 2008 prototype) | 10 July 2008 | Xbox 360 | Action-adventure, RTS | 25 December 2022 23:37:47 | - |
| Guilty Gear 2: Overture (Mar 24, 2008 prototype) | 24 March 2008 | Xbox 360 | Action-adventure, RTS | 25 December 2022 23:37:34 | - |
| Guilty Gear 2: Overture (Oct 23, 2007 Prototype) | 23 October 2007 10:43:51 | Xbox 360 | RTS | 10 May 2023 02:05:54 | - |
| Guilty Gear Isuka (Aug 15, 2004 prototype) | 15 August 2004 19:59:30 | PlayStation 2 | Fighting | 3 July 2020 17:34:32 | - |
| Guilty Gear Isuka (Jul 23, 2004 prototype) | 23 July 2004 17:30:52 | PlayStation 2 | Fighting | 20 March 2021 23:23:44 | - |
| Guilty Gear Isuka (Oct 6, 2004 prototype) | 6 October 2004 01:17:00 | PlayStation 2 | Fighting | 4 September 2020 00:14:54 | - |
| Guilty Gear X (May 1, 2000 prototype) | 1 May 2000 15:33:36 | Dreamcast | Fighting | 7 April 2021 23:15:21 | - |
| Guilty Gear X (May 30, 2001 prototype) | 30 May 2001 17:40:30 | PlayStation 2 | Fighting | 20 March 2021 23:54:20 | - |
| Guilty Gear X2 Reload: The Midnight Carnival (Apr 26, 2004 prototype) | 26 April 2004 08:04:21 | Xbox | Fighting | 18 September 2021 21:59:45 | - |
| Guilty Gear XX Accent Core (Jul 6, 2007 prototype) | 6 July 2007 | Nintendo Wii | Fighting | 25 December 2022 23:23:29 | - |
| Guilty Gear XX Accent Core Plus (Nov 7, 2008 prototype) | 7 November 2008 22:17:41 | PlayStation 2 | Fighting | 20 March 2021 23:53:19 | - |
| Guitar Hero (Sep 3, 2005 prototype) | 3 September 2005 15:42:52 | PlayStation 2 | Rhythm | 20 March 2021 23:54:10 | - |
| Guitar Hero 5 (Jun 24, 2009 prototype) | 24 June 2009 22:51:55 | Xbox 360 | Music/Rhythm | 26 April 2024 13:50:29 | - |
| Guitar Hero Encore: Rocks the 80s (May 18, 2007 prototype) | 18 May 2007 17:06:46 | PlayStation 2 | Rhythm | 20 March 2021 23:29:16 | - |
| Guitar Hero II (Jan 26, 2007 prototype) | 26 January 2007 21:01:12 | Xbox 360 | Rhythm | 25 September 2023 20:54:30 | - |
| Guitar Hero II (Jan 8, 2007 prototype) | 8 January 2007 20:36:28 | Xbox 360 | Rhythm | 25 September 2023 20:22:38 | - |
| Guitar Hero II (Nov, 2006 prototype) | November 2006 | PlayStation 2 | Music, Rhythm | 6 March 2023 06:51:06 | - |
| Guitar Hero III: Legends of Rock (Aug 28, 2007 prototype) | 28 August 2007 02:49:21 | Xbox 360 | Rhythm | 25 September 2023 21:02:20 | - |
| Guitar Hero III: Legends of Rock (Jul 6, 2007 prototype) | 6 July 2007 02:45:23 | Xbox 360 | Rhythm | 21 February 2024 20:33:50 | - |
| Guitar Hero III: Legends of Rock (May 2, 2007 prototype) | 28 August 2007 | Xbox 360 | Rhythm | 25 February 2024 15:42:03 | - |
| Guitar Hero World Tour (Aug 29, 2008 prototype) | 29 August 2008 21:47:11 | Xbox 360 | Rhythm | 25 September 2023 21:15:14 | - |
| Guitar Hero World Tour (DLC Guitar Duel Track Pack prototype) | Xbox 360 | Music/Rhythm | 9 March 2024 20:43:22 | - | |
| Guitar Hero World Tour (DLC Oasis Track Pack prototype) | Xbox 360 | Music/Rhythm | 9 March 2024 20:52:28 | - | |
| Guitar Hero World Tour (Sep 29, 2008 prototype) | 29 September 2008 | Xbox 360 | Music | 25 December 2022 23:36:40 | - |
| Gun (Apr 7, 2004 prototype) | 7 April 2004 | Nintendo GameCube | Action | 3 October 2020 19:32:33 | - |
| Gun (Aug 31, 2005 prototype) | 31 August 2005 19:08:26 | Xbox | Action | 23 November 2020 01:41:57 | - |
| Gun Loco (Sep 13, 2010 prototype) | 13 September 2010 08:10:33 | Xbox 360 | Action | 25 September 2023 20:04:03 | ✓ |
| Gun Metal (May 31, 2002 prototype) | 31 May 2002 | Xbox | Action, Shooter | 9 December 2023 13:43:42 | - |
| Gun Valkyrie (Dec 28, 2001 prototype) | 28 December 2001 11:31:03 | Xbox | Third-Person Shooter | 18 September 2021 22:03:38 | - |
| Gun Valkyrie (Jan 11, 2002 prototype) | 11 January 2002 12:37:45 | Xbox | Third-Person Shooter | 18 September 2021 21:50:04 | - |
| Gungrave (Jun 27, 2002 prototype) | 27 June 2002 18:21:33 | PlayStation 2 | Third Person Shooter | 20 March 2021 23:48:10 | - |
| Gungriffon: Allied Strike (Nov 17, 2004 prototype) | 17 November 2004 22:23:11 | Xbox | Action, Mech Combat | 18 September 2021 21:54:09 | - |
| Gungriffon: The Eurasian Conflict (Dec 25, 1995 prototype) | 25 December 1995 17:54:16 | Sega Saturn | Vehicular Combat | 17 April 2021 20:59:47 | - |
| Gunlok (Oct 12, 2000 prototype) | 12 October 2000 | PC | 13 January 2020 07:07:19 | - | |
| Gunpey (Sep 1, 2006 prototype) | 1 September 2006 22:04:41 | PlayStation Portable | Puzzle | 1 March 2023 03:51:42 | - |
| Gunple: Gunman's Proof (Prototype) | SNES | Action | 7 December 2016 19:29:04 | - | |
| Gunslinger Girl Volume I (Jun 29, 2003 prototype) | 29 June 2003 23:02:00 | PlayStation 2 | Action-adventure | 25 June 2020 15:35:52 | - |
| Gunslinger Girl Volume I (Sep 29, 2003 prototype) | 29 September 2003 19:08:00 | PlayStation 2 | Action-adventure | 25 June 2020 15:33:29 | - |
| Gunstar Heroes (Feb 25, 2009 prototype) | 25 February 2009 | Xbox 360 | Action | 16 August 2023 15:35:17 | - |
| Gunstar Heroes (Mar 31, 2009 prototype) | 31 March 2009 | Xbox 360 | 27 October 2023 21:23:52 | - | |
| Gunstar Heroes (Prototype) | Sega Mega Drive | Action | 7 December 2016 22:21:48 | - | |
| Guwange (Aug 23, 2010 prototype) | 23 August 2010 | Xbox 360 | Shooter | 16 August 2023 15:42:19 | - |
| Gyromancer (Sep 18, 2009 prototype) | 18 September 2009 | Xbox 360 | Puzzle | 26 August 2023 00:59:51 | - |
| Gyruss (Mar 16, 2007 prototype) | 16 March 2007 | Xbox 360 | Shoot 'Em Up | 27 October 2023 21:36:37 | - |
| Gyruss (Prototype A) | Atari 2600 | Shoot 'em up | 9 May 2023 00:51:53 | - | |
| Gyruss (Prototype B) | Atari 2600 | Shoot 'em up | 9 May 2023 00:53:10 | - | |
| Habbo Islands (Oct 27, 2006 prototype) | 27 October 2006 | N-Gage | Simulation | 14 January 2020 09:26:14 | ✓ |
| Hagane: The Final Conflict (prototype) | SNES | Action | 15 July 2023 16:13:38 | - | |
| Hail to the Chimp (Mar 19, 2008 prototype) | 19 March 2008 | Xbox 360 | Party | 25 December 2022 23:36:52 | - |
| Hail to the Chimp (Nov 15, 2006 prototype) | 15 November 2006 23:57:07 | Xbox | Party | 18 September 2021 22:05:15 | ✓ |
| Hakunetsu Pro Yakyuu '94: Ganba League 3 (Prototype) | SNES | Sports | 10 November 2023 16:38:18 | - | |
| Half-Life (Apr 20, 2001 prototype) | 20 April 2001 09:13:38 | Dreamcast | First-Person Shooter | 29 August 2018 03:13:44 | ✓ |
| Half-Life (Aug 16, 2001 prototype) | 16 August 2001 14:22:19 | PlayStation 2 | First-Person Shooter | 14 September 2022 13:25:35 | - |
| Half-Life (May 10, 2001 prototype) | 10 May 2001 18:48:46 | Dreamcast | First-Person Shooter | 27 February 2023 09:10:00 | ✓ |
| Half-Life (May 23, 2001 prototype) | 23 May 2001 16:13:52 | Dreamcast | First-Person Shooter | 25 April 2021 18:07:07 | ✓ |
| Half-Life (Nov 1, 1998 prototype) | 1 November 1998 21:55:35 | PC | First-Person Shooter | 25 July 2021 21:31:12 | - |
| Half-Life (Oct 26, 1998 demo) | 26 October 1998 16:59:09 | PC | First-Person Shooter | 14 September 2022 13:02:32 | - |
| Half-Life (Sep 18, 1998 demo) | 18 September 1998 02:33:26 | PC | First-Person Shooter | 13 November 2022 00:57:54 | - |
| Half-Life (Sep 27, 1998 demo) | 27 September 1998 17:32:00 | PC | First-Person Shooter | 14 September 2022 12:59:09 | - |
| Half-Life (Sep 4, 1997 prototype) | 4 September 1997 09:18:27 | PC | First-Person Shooter | 22 November 2016 20:01:24 | - |
| Half-Life 2 (Nov 10, 2005 demo) | 10 November 2005 13:30:32 | Xbox | First-Person Shooter | 5 March 2024 16:34:09 | - |
| Half-Life 2 (Sep 26, 2003 prototype) | 26 September 2003 | PC | Shooter | 17 January 2023 14:03:57 | - |
| Half-Life 2 (Sep 29, 2004 prototype) | 29 September 2004 | PC | First-Person Shooting | 30 November 2023 21:25:10 | - |
| Half-Life: Opposing Force (Oct 18, 1999 Press Demo) | 18 October 1999 09:29:43 | PC | First-person shooter | 21 September 2021 01:56:30 | - |
| Halo 2 (Apr 9, 2007 prototype) | 9 April 2007 | PC | First-person shooter | 17 February 2023 08:39:01 | - |
| Halo 2 (Jan 7, 2004 Prototype) | 7 January 2004 | Xbox | 7 May 2021 13:41:59 | - | |
| Halo 2 (Jun 28, 2004 prototype) | 28 June 2004 | Xbox | FPS | 1 August 2017 03:39:04 | - |
| Halo 3 (Aug 10, 2007 Prototype) | 10 August 2007 | Xbox 360 | FPS | 10 May 2023 22:55:06 | - |
| Halo 3 (Aug 2, 2007 prototype) | 2 August 2007 | Xbox 360 | FPS | 18 March 2024 19:58:15 | - |
| Halo 3 (Aug 20, 2007 Prototype) | 20 August 2007 | Xbox 360 | FPS | 10 May 2023 23:12:25 | - |
| Halo 3 (Mar 10, 2007 prototype) | 10 March 2007 | Xbox 360 | First-Person Shooter | 20 March 2024 13:36:17 | - |
| Halo 3 (Mar 11, 2007 prototype) | 11 March 2007 00:43:55 | Xbox 360 | First Person Shooter | 25 September 2023 20:54:05 | - |
| Halo 3 (Mar 7, 2007 prototype) | 7 March 2007 | Xbox 360 | First Person Shooter | 20 March 2024 13:32:15 | - |
| Halo 3 (Mar 8, 2007 22.42 prototype) | 8 March 2007 22:42:44 | Xbox 360 | First-Person Shooter | 16 March 2024 14:31:42 | - |
| Halo 3 (Mar 8, 2007 prototype) | 8 March 2007 01:07:14 | Xbox 360 | First Person Shooter | 26 December 2022 11:10:54 | - |
| Halo 3 (Mar 9, 2007 prototype) | 9 March 2007 | Xbox 360 | First-Person Shooter | 16 March 2024 17:26:34 | - |
| Halo 3 (May 1, 2007 Multiplayer Prototype) | 1 May 2007 | Xbox 360 | FPS | 10 May 2023 23:38:06 | - |
| Halo 3 (Nov 17, 2006 prototype) | 17 November 2006 13:30:00 | Xbox 360 | First Person Shooter | 26 December 2022 11:07:35 | - |
| Halo 3 (Sep 21, 2006 prototype) | 21 September 2006 15:35:23 | Xbox 360 | First Person Shooter | 10 September 2023 06:36:07 | - |
| Halo 3 (Sep 6, 2008 prototype) | 6 September 2008 03:37:52 | Xbox 360 | First Person Shooter | 25 September 2023 20:53:37 | - |
| Halo 4 (Aug 19, 2012 Prototype) | 19 August 2012 04:15:19 | Xbox 360 | FPS | 11 May 2023 01:33:37 | - |
| Halo 4 (Aug 22, 2011 prototype) | 22 August 2011 18:04:26 | Xbox 360 | First Person Shooter | 25 September 2023 20:26:15 | - |
| Halo 4 (Aug 25, 2012 DLC Test 1 prototype) | 25 August 2012 | Xbox 360 | First Person Shooter | 28 September 2023 19:38:20 | ✓ |
| Halo 4 (Aug 25, 2012 DLC Test 2 prototype) | 25 August 2012 | Xbox 360 | First Person Shooter | 28 September 2023 19:40:43 | ✓ |
| Halo 4 (Aug 25, 2012 DLC Test 3 prototype) | 25 August 2012 | Xbox 360 | First Person Shooter | 28 September 2023 19:43:09 | ✓ |
| Halo 4 (Dec 21, 2011 prototype) | 21 December 2011 11:31:54 | Xbox 360 | First Person Shooter | 25 September 2023 21:11:48 | - |
| Halo 4 (Jan 14, 2013 prototype) | 14 January 2013 | Xbox 360 | First Person Shooter | 11 May 2024 08:14:31 | - |
| Halo 4 (May 31 2012 Prototype B) | May 31 JL | Xbox 360 | FPS | 11 May 2023 21:27:57 | - |
| Halo 4 (May 31, 2012 Prototype C) | May 31 JL | Xbox 360 | FPS | 11 May 2023 21:53:59 | - |
| Halo 4 (May 31, 2012 Prototype) | May 31 JL | Xbox 360 | FPS | 11 May 2023 21:03:40 | - |
| Halo 4 (May 5, 2012 Network Test Prototype) | 5 May 2012 | Xbox 360 | FPS | 11 May 2023 22:09:34 | - |
| Halo 4 (Nov 15, 2011 prototype) | 15 November 2011 08:12:41 | Xbox 360 | First Person Shooter | 25 September 2023 21:17:48 | - |
| Halo 4 (Oct 12, 2011 prototype) | 12 October 2011 02:11:34 | Xbox 360 | First Person Shooter | 25 September 2023 20:38:22 | - |
| Halo 4 (Oct 14, 2011 prototype) | 14 October 2011 00:00:00 | Xbox 360 | First Person Shooter | 25 September 2023 20:11:07 | - |
| Halo 4 (Oct 20, 2011 prototype) | 20 October 2011 09:52:02 | Xbox 360 | First Person Shooter | 25 September 2023 21:04:56 | - |
| Halo 4 (Oct 4, 2011 prototype) | 4 October 2011 22:58:36 | Xbox 360 | First Person Shooter | 25 September 2023 20:23:20 | - |
| Halo 4 (Oct 5, 2011 prototype) | 5 October 2011 00:08:35 | Xbox 360 | First Person Shooter | 25 September 2023 20:40:10 | - |
| Halo 4 (Sep 19, 2011 prototype) | 19 September 2011 05:15:12 | Xbox 360 | First Person Shooter | 25 September 2023 20:23:36 | - |
| Halo 4 (Sep 28, 2011 prototype) | 28 September 2011 02:43:56 | Xbox 360 | First Person Shooter | 25 September 2023 20:12:22 | - |
| Halo Online (Apr 17, 2015 prototype) | 17 April 2015 | PC | Shooter | 2 October 2023 07:20:04 | ✓ |
| Halo Online (Apr 21, 2015 prototype) | 21 April 2015 | PC | Shooter | 3 October 2023 13:57:33 | ✓ |
| Halo Online (Aug 1, 2015 prototype) | 1 August 2015 | PC | Shooter | 9 October 2023 14:23:21 | ✓ |
| Halo Online (Aug 19, 2015 prototype) | 19 August 2015 | PC | Shooter | 9 October 2023 14:40:10 | ✓ |
| Halo Online (Aug 27, 2015 prototype) | 27 August 2015 | PC | Shooter | 9 October 2023 17:01:05 | ✓ |
| Halo Online (Aug 7, 2015 prototype) | 7 August 2015 | PC | Shooter | 9 October 2023 14:05:57 | ✓ |
| Halo Online (Jul 15, 2015 prototype) | 15 July 2015 | PC | Shooter | 9 October 2023 13:42:16 | ✓ |
| Halo Online (Jun 13, 2015 prototype) | 13 June 2015 | PC | Shooter | 8 October 2023 21:38:59 | ✓ |
| Halo Online (Jun 29, 2015 prototype) | 29 June 2015 | PC | Shooter | 4 October 2023 12:30:11 | ✓ |
| Halo Online (Mar 20, 2015 prototype) | 20 March 2015 | PC | Shooter | 1 October 2023 11:42:50 | ✓ |
| Halo Online (May 19, 2015 prototype) | 19 May 2015 | PC | Shooter | 3 October 2023 14:10:13 | ✓ |
| Halo Online (Nov 24, 2015 prototype) | 24 November 2015 | PC | Shooter | 9 October 2023 20:26:15 | ✓ |
| Halo Online (Oct 1, 2015 prototype) | 1 October 2015 | PC | Shooter | 9 October 2023 19:39:34 | ✓ |
| Halo Online (Oct 15, 2015 prototype) | 15 October 2015 | PC | Shooter | 9 October 2023 20:02:11 | ✓ |
| Halo Online (Sep 16, 2015 prototype) | 16 September 2015 | PC | Shooter | 9 October 2023 17:22:34 | ✓ |
| Halo Online (Sep 17, 2015 prototype) | 17 September 2015 | PC | Shooter | 9 October 2023 19:15:39 | ✓ |
| Halo Online (Sep 25, 2015 prototype) | 25 September 2015 | PC | Shooter | 9 October 2023 18:27:25 | ✓ |
| Halo Online (Sep 3, 2015 prototype) | 3 September 2015 | PC | Shooter | 9 October 2023 18:00:51 | ✓ |
| Halo Online (Unknown A prototype) | PC | Shooter | 10 October 2023 14:05:44 | ✓ | |
| Halo Online (Unknown B prototype) | 2 January 4713 BC 21:59:11 JL | PC | Shooter | 10 October 2023 14:26:20 | ✓ |
| Halo Online (Unknown C prototype) | PC | Shooter | 10 October 2023 14:47:20 | ✓ | |
| Halo Online (Unknown D prototype) | PC | Shooter | 10 October 2023 15:34:22 | ✓ | |
| Halo Wars (DLC 1 TEMP TEXT prototype) | Xbox 360 | Real-Time Strategy | 9 March 2024 15:44:44 | ✓ | |
| Halo Wars (Dec 12, 2008 Prototype) | December 12 JL | Xbox 360 | RTS | 15 May 2023 21:19:13 | - |
| Halo Wars (Feb 21, 2008 Prototype) | 21 February 2008 | Xbox 360 | RTS | 15 May 2023 22:42:31 | - |
| Halo Wars (Nov 6, 2008 Prototype) | 6 November 2008 | Xbox 360 | RTS | 12 May 2023 00:19:10 | - |
| Halo Wars 2 (Dec 20, 2016 prototype) | 20 December 2016 17:41:54 | PC | Real-Time Strategy | 3 December 2023 16:08:11 | - |
| Halo Wars 2 (Jan 5, 2017 prototype) | 5 January 2017 12:36:46 | PC | Real-Time Strategy | 3 December 2023 17:53:42 | - |
| Halo: Combat Evolved (Aug 15, 2001 prototype) | 15 August 2001 22:42:15 | Xbox | First-person shooter | 8 August 2020 16:50:21 | - |
| Halo: Combat Evolved (Aug 6, 2003 prototype) | 6 August 2003 | PC | First-person shooter | 29 March 2023 05:19:37 | - |
| Halo: Combat Evolved (Feb 25, 2002 prototype) | 25 February 2002 | Xbox | First-Person Shooter | 9 December 2023 13:48:17 | - |
| Halo: Combat Evolved (Jul 30, 2003 prototype) | 30 July 2003 | PC | First-person shooter | 17 February 2023 08:29:10 | - |
| Halo: Combat Evolved (May 22, 2003 prototype) | 22 May 2003 | PC | First-person shooter | 29 March 2023 05:23:59 | - |
| Halo: Combat Evolved (Oct 12, 2001 prototype) | 12 October 2001 19:12:36 | Xbox | First-person shooter | 8 August 2020 16:59:24 | - |
| Halo: Combat Evolved (Sep 26, 2001 prototype) | 26 September 2001 | Xbox | First-person shooter | 17 February 2023 08:13:19 | - |
| Halo: Combat Evolved (Sep 30, 2003 prototype) | 30 September 2003 | PC | First-person shooter | 28 February 2024 12:51:26 | - |
| Halo: Reach (Apr 7, 2010 prototype) | 7 April 2010 04:45:43 | Xbox 360 | First Person Shooter | 25 September 2023 21:09:18 | - |
| Halo: Reach (Apr 9, 2010 Multiplayer Prototype) | 9 April 2010 | Xbox 360 | FPS | 11 May 2023 22:57:55 | - |
| Halo: Reach (Feb 19, 2010 prototype) | February 19 JL | Xbox 360 | FPS | 13 May 2023 06:30:20 | - |
| Halo: Reach (Jul 24, 2010 prototype) | 24 July 2010 09:30:05 | Xbox 360 | First Person Shooter | 19 December 2018 06:55:16 | - |
| Halo: Reach (Jul 7, 2011 prototype) | 7 July 2011 16:36:52 | Xbox 360 | First Person Shooter | 25 September 2023 20:31:27 | - |
| Halo: Reach (Jun 13, 2011 prototype) | 13 June 2011 00:00:00 | Xbox 360 | First Person Shooter | 25 September 2023 21:03:23 | - |
| Halo: Reach (Mar 25, 2010 Multiplayer Prototype) | 25 March 2010 | Xbox 360 | FPS | 11 May 2023 23:10:43 | - |
| Halo: Reach (Oct 25, 2010 prototype) | 25 October 2010 20:20:33 | Xbox 360 | First Person Shooter | 25 September 2023 21:17:25 | - |
| Halo: Spartan Strike (Nov 14, 2014 prototype) | 14 November 2014 12:40:08 | PC | Action, Dual-Joystick Shooter | 3 December 2023 14:46:46 | - |
| Hammerin' Hero (Nov 28, 2008 prototype) | 28 November 2008 | PlayStation Portable | Action | 16 February 2023 00:38:09 | - |
| Hamtaro: Rainbow Rescue (Jul 29, 2003 prototype) | 29 July 2003 18:17:35 | Game Boy Advance | Adventure | 26 October 2023 03:10:19 | - |
| Hang On & Safari Hunt (Prototype) | Sega Master System | Compilation | 11 March 2017 09:10:46 | - | |
| Hang-On (Prototype) | Sega Master System | Racing | 30 March 2019 23:52:12 | - | |
| Hanna Barbera's Turbo Toons (Atlus prototype) | SNES | Racing | 15 September 2018 00:13:47 | - | |
| Hannah Montana: Pop Star Exclusive (Aug 11, 2008 prototype) | 11 August 2008 00:53:28 | Nintendo DS | Music | 11 March 2024 16:30:57 | ✓ |
| Haou Taikei Ryuu Knight: Lord of Paladin (Prototype) | SNES | Role Playing | 7 December 2016 19:40:40 | - | |
| Happily Ever After (Prototype) | NES | Adventure | 20 November 2016 00:13:57 | ✓ | |
| Happy Feet (September 14, 2006 prototype) | 14 September 2006 06:40:38 | PlayStation 2 | Music | 19 February 2021 15:38:52 | - |
| Happy Tree Friends False Alarm (Apr 30, 2008 prototype) | 30 April 2008 | Xbox 360 | Puzzle | 26 September 2023 13:30:06 | - |
| Hard Corps: Uprising (Apr 28, 2010 prototype) | Xbox 360 | Shooter | 23 June 2016 01:04:11 | - | |
| Hard Corps: Uprising (Dec 1, 2010 prototype) | 1 December 2010 | Xbox 360 | Action, Shooter | 27 October 2023 21:57:24 | - |
| Hard Drivin' (Prototype) | 26 March 1991 | NES | Racing | 22 November 2016 10:33:52 | ✓ |
| Hard-Head (USA prototype) | Atari 2600 | 1 January 2023 23:19:16 | ✓ | ||
| Hardwood Backgammon (Aug 9, 2006 prototype) | 9 August 2006 | Xbox 360 | Card game | 16 August 2023 15:41:38 | - |
| Hardwood Hearts (Aug 9, 2006 prototype) | 9 August 2006 | Xbox 360 | Card Game | 26 August 2023 00:59:58 | - |
| Hardwood Hearts (Oct 28, 2008 prototype) | 28 October 2008 | Xbox 360 | Strategy, Card Game | 27 October 2023 21:59:43 | - |
| Hardwood Hearts (Oct 6, 2006 prototype) | 6 October 2006 | Xbox 360 | Strategy, Card Game | 27 October 2023 22:02:16 | - |
| Hardwood Spades (Aug 9, 2006 prototype) | 9 August 2006 | Xbox 360 | Card game | 16 August 2023 15:22:15 | - |
| Hardwood Spades (Oct 27, 2008 prototype) | 27 October 2008 | Xbox 360 | Card Game | 16 August 2023 15:43:22 | - |
| Hardwood Spades (Unknown prototype) | Xbox 360 | Strategy, Card Game | 15 December 2023 22:29:30 | - | |
| Harry Potter and the Chamber of Secrets (Sep 6, 2002 prototype) | 6 September 2002 | PC | 29 April 2022 23:12:44 | - | |
| Harry Potter and the Deathly Hallows: Part 2 (Mar 21, 2011 prototype) | 21 March 2011 | PlayStation 3 | Shooter | 15 January 2024 15:13:42 | - |
| Harry Potter and the Order of the Phoenix (May 19, 2007 prototype) | 19 May 2007 | Nintendo Wii | Action | 25 December 2022 23:23:13 | - |
| Harry Potter and the Order of the Phoenix (May 22, 2007 prototype) | 22 May 2007 00:00:00 | Xbox 360 | Action Adventure | 25 September 2023 20:14:25 | - |
| Harry Potter for Kinect (Aug 10, 2012 prototype) | 10 August 2012 | Xbox 360 | 28 December 2022 05:13:29 | - | |
| Harry Potter for Kinect (Aug 11, 2012 prototype) | 11 August 2012 06:05:45 | Xbox 360 | Action Adventure | 25 September 2023 20:11:13 | - |
| Harry Potter for Kinect (Aug 14, 2012 prototype) | 14 August 2012 16:55:28 | Xbox 360 | Action Adventure | 25 September 2023 20:14:34 | - |
| Harry Potter for Kinect (Aug 15, 2012 prototype) | 15 August 2012 08:36:38 | Xbox 360 | Action Adventure | 25 September 2023 21:08:06 | - |
| Harry Potter for Kinect (Aug 20, 2012 prototype) | 20 August 2012 13:48:48 | Xbox 360 | Action Adventure | 25 September 2023 21:03:39 | - |
| Harry Potter for Kinect (Aug 3, 2012 prototype) | 3 August 2012 06:05:37 | Xbox 360 | Action Adventure | 25 September 2023 20:48:31 | - |
| Harry Potter for Kinect (Feb 10, 2012 prototype) | 10 February 2012 13:57:55 | Xbox 360 | Action Adventure | 25 September 2023 21:05:57 | - |
| Harry Potter for Kinect (Jan 17, 2012 prototype) | 17 January 2012 14:13:57 | Xbox 360 | Action Adventure | 25 September 2023 20:30:59 | - |
| Harry Potter for Kinect (Jan 23, 2012 prototype) | 23 January 2012 09:39:17 | Xbox 360 | Action Adventure | 25 September 2023 20:27:48 | - |
| Harry Potter for Kinect (Jan 24, 2012 prototype) | 24 January 2012 08:57:33 | Xbox 360 | Action Adventure | 25 September 2023 20:38:42 | - |
| Harry Potter for Kinect (Jul 17, 2012 prototype) | 17 July 2012 07:54:06 | Xbox 360 | Action Adventure | 25 September 2023 20:28:00 | - |
| Harry Potter for Kinect (Jul 20, 2012 prototype) | 20 July 2012 | Xbox 360 | Action Adventure | 28 September 2023 08:04:35 | - |
| Harry Potter for Kinect (Jul 21, 2012 prototype) | 21 July 2012 06:07:51 | Xbox 360 | Action Adventure | 25 September 2023 20:51:10 | - |
| Harry Potter for Kinect (Jul 30, 2012 prototype) | 30 July 2012 14:45:03 | Xbox 360 | Action Adventure | 25 September 2023 20:29:22 | - |
| Harry Potter for Kinect (Jul 6, 2011 prototype) | 6 July 2011 15:29:50 | Xbox 360 | Action Adventure | 25 September 2023 20:54:26 | - |
| Harry Potter for Kinect (Jun 11, 2012 prototype) | 11 June 2012 09:32:49 | Xbox 360 | Action Adventure | 25 September 2023 21:05:17 | - |
| Harry Potter for Kinect (Oct 10, 2012 prototype) | 10 October 2012 14:14:40 | Xbox 360 | Action Adventure | 25 September 2023 20:55:21 | - |
| Harry Potter for Kinect (Oct 9, 2012 prototype) | 9 October 2012 09:25:20 | Xbox 360 | Action Adventure | 25 September 2023 21:08:11 | - |
| Harry Potter for Kinect (Sep 12, 2011 prototype) | 12 September 2011 08:39:21 | Xbox 360 | Action Adventure | 25 September 2023 20:31:28 | - |
| Harry Potter for Kinect (Sep 9, 2011 prototype) | 9 September 2011 00:00:00 | Xbox 360 | Action Adventure | 25 September 2023 20:53:07 | - |
| Harry Potter: Quidditch World Cup (Aug 10, 2003 15.48 prototype) | 10 August 2003 15:48:00 | PlayStation 2 | Sports | 24 June 2020 12:28:50 | - |
| Harry Potter: Quidditch World Cup (Aug 10, 2003 17.05 prototype) | 10 August 2003 17:05:00 | PlayStation 2 | Sports | 24 June 2020 12:34:50 | - |
| Harry Potter: Quidditch World Cup (Aug 12, 2003 prototype) | 12 August 2003 00:21:00 | PlayStation 2 | Sports | 24 June 2020 12:38:45 | - |
| Harvest Moon (Prototype) | SNES | Action | 14 January 2023 15:12:55 | - | |
| Harvey Birdman: Attorney at Law (Aug 8, 2007 prototype) | 8 August 2007 15:04:26 | PlayStation 2 | Harvey Birdman: Attorney at Law | 20 March 2021 23:56:14 | - |
| Harvey Birdman: Attorney at Law (Jun 10, 2007 prototype) | 10 June 2007 | Nintendo Wii | Visual novel, Interactive movie | 25 December 2022 23:23:23 | - |
| Hasbro Family Game Night (Feb 19, 2009 prototype) | 19 February 2009 | Xbox 360 | Board Game | 26 August 2023 00:52:57 | - |
| Hasbro Family Game Night (Jul 14, 2009 prototype) | 14 July 2009 | PlayStation 3 | Trivia/Board Game | 15 January 2024 15:20:06 | - |
| Hasbro Family Game Night 3 (Jul 12, 2010 prototype) | 12 July 2010 | Nintendo Wii | Minigames | 25 December 2022 23:23:54 | - |
| Haste (Jan 6, 2012 prototype) | 6 January 2012 | Xbox 360 | Racing | 16 August 2023 15:29:43 | - |
| Hatris (Prototype) | NES | Puzzle | 27 July 2017 17:53:38 | - | |
| Haunted House (Aug 11, 2010 prototype) | 11 August 2010 | Xbox 360 | Action | 16 August 2023 15:47:14 | - |
| Haunted House (Aug 12, 1981 prototype) | 12 August 1981 | Atari 2600 | Action-Adventure | 8 May 2023 16:26:17 | - |
| Haunted House (Jun 21, 2010 prototype) | 21 June 2010 | Xbox 360 | Action | 16 August 2023 16:02:05 | - |
| Haunting Ground (Jan 12, 2005 prototype) | 12 January 2005 14:42:33 | PlayStation 2 | Survival | 20 March 2021 23:48:23 | - |
| Haven: Call of the King (Aug 15, 2002 prototype) | 15 August 2002 01:30:04 | PlayStation 2 | 3D Platformer | 20 March 2021 23:27:53 | - |
| Haze (Apr 16, 2008 prototype) | 16 April 2008 | PlayStation 3 | First-person shooter | 11 August 2023 00:24:29 | - |
| Haze (May 12, 2008 prototype) | PlayStation 3 | Action, First-Person Shooter | 22 February 2024 08:37:27 | - | |
| Haze (Sep 19, 2007 prototype) | 19 September 2007 | PlayStation 3 | Action, First-Person Shooter | 9 January 2024 20:41:27 | - |
| He-Man: Defender of Grayskull (Jul 22, 2003 prototype) | 22 July 2003 00:18:38 | Xbox | Action-Adventure | 18 September 2021 21:53:24 | ✓ |
| Headhunter (Dec 14, 2001 prototype) | 14 December 2001 16:14:10 | PlayStation 2 | Action Adventure | 12 June 2021 16:11:37 | - |
| Headhunter (Feb 8, 2002 prototype) | 8 February 2002 03:22:26 | PlayStation 2 | Action Adventure | 20 March 2021 23:41:06 | - |
| Headhunter (Mar 14, 2002 prototype) | 14 March 2002 00:23:28 | PlayStation 2 | Action Adventure | 20 March 2021 23:42:23 | - |
| Headhunter (Nov 18, 2001 prototype) | 18 November 2001 | PlayStation 2 | Action Adventure | 11 May 2022 15:02:36 | - |
| Headhunter: Redemption (May 28, 2004 prototype) | 28 May 2004 11:18:58 | PlayStation 2 | Action Adventure | 20 March 2021 23:48:50 | - |
| Heart of Darkness (May 31, 1996 prototype) | 31 May 1996 19:12:14 | Sega Saturn | Adventure | 10 February 2019 18:42:06 | ✓ |
| Heat.net (Apr 21, 1997 prototype) | 21 April 1997 | PC | 20 March 2024 13:21:06 | - | |
| Heatseeker (Jan 11, 2007 prototype) | 11 January 2007 | PlayStation 2 | Combat Flight Simulation | 7 April 2024 17:52:15 | - |
| Heatseeker (Jan 15, 2007 prototype) | 15 January 2007 | PlayStation Portable | Flight Simulator | 7 December 2020 19:04:55 | - |
| Heavenly Sword (Jul 11, 2007 prototype) | 11 July 2007 18:03:47 | PlayStation 3 | Action | 16 December 2023 21:56:45 | - |
| Heavenly Sword (Jun 26, 2007 prototype) | 26 June 2007 | PlayStation 3 | Action | 13 January 2020 06:15:12 | - |
| Heavy Rain (Nov 11, 2009 prototype) | 11 November 2009 11:27:00 | PlayStation 3 | Interactive drama, action-adventure | 20 December 2023 21:22:58 | - |
| Heavy Rain (Nov 6, 2009 prototype) | 6 November 2009 09:10:00 | PlayStation 3 | Interactive drama, action-adventure | 20 December 2023 21:59:20 | - |
| Heavy Weapon: Atomic Tank (Dec 6, 2006 prototype) | 6 December 2006 | Xbox 360 | Dual-Joystick Shooter | 28 October 2023 13:45:36 | - |
| Hebereke's Popoon (November 3, 1993 prototype) | 3 November 1993 | SNES | Puzzle | 23 June 2020 20:08:26 | - |
| Heisei Kyouiku Iinkai Jr. (Prototype) | Sega Pico | Educational | 17 June 2016 17:25:12 | - | |
| Heisei Ten Sai Baka Bon Minna De Famiri-Restutoranni-Kun (prototype) | Sega Pico | Educational | 17 June 2016 17:25:28 | - | |
| Hell Gate (Apr 10, 2001 prototype) | Dreamcast | Shooter | 18 January 2017 22:49:26 | ✓ | |
| Hellboy: The Science of Evil (Aug 9, 2007 prototype) | 9 August 2007 | Xbox 360 | Action | 25 December 2022 23:37:32 | - |
| Hellboy: The Science of Evil (Mar 27, 2007 prototype) | 27 March 2007 | Xbox 360 | Action | 25 December 2022 23:37:16 | - |
| Hellboy: The Science of Evil (Mar 5, 2007 prototype) | 5 March 2007 | Xbox 360 | Action | 25 December 2022 23:36:34 | - |
| Hellfire (Jul 10, 1990 prototype) | 10 July 1990 | Sega Mega Drive | Shooter | 10 May 2024 00:20:44 | - |
| Hercules: The Legendary Journeys (May 12, 2000 Debug Prototype) | 12 May 2000 | Nintendo 64 | Adventure | 28 January 2022 14:57:39 | - |
| Hercules: The Legendary Journeys (Oct 8, 1999 Prototype) | 8 October 1999 | Nintendo 64 | Adventure | 25 July 2022 13:04:49 | - |
| Hero (Oct 11, 2011 prototype) | 11 October 2011 13:36:05 | Xbox 360 | Action | 25 September 2023 20:29:18 | ✓ |
| HeroQuest (Aug 21, 1992 prototype) | 21 August 1992 | NES | Role playing | 9 January 2024 00:32:38 | ✓ |
| HeroQuest (May 5, 1992 prototype) | 5 May 1992 | NES | Role playing | 1 October 2021 16:46:57 | ✓ |
| Heroes Over Europe (Jul 8, 2009 prototype) | 8 July 2009 09:58:06 | Xbox 360 | Flight Combat Simulator | 25 September 2023 20:05:17 | - |
| Heroes of Might and Magic III: The Restoration of Erathia (Aug 11, 2000 prototype) | 11 August 2000 14:23:16 | Dreamcast | Turn-based strategy | 30 March 2020 19:38:17 | ✓ |
| Heroes of Might and Magic III: The Restoration of Erathia (Feb 16, 1999 prototype) | 16 February 1999 | PC | 17 September 2022 22:24:08 | - | |
| Heroes of Might and Magic V (Jun 29, 2004 prototype) | 29 June 2004 | PC | Turn-based strategy | 3 August 2022 08:37:49 | - |
| Heroes of the Lance (Master System Prototype) | Sega Master System | Role playing | 26 May 2021 12:37:12 | - | |
| Heroes of the Pacific (Jun 22, 2005 11.06 prototype) | 22 June 2005 11:06:16 | Xbox | Combat Flight Simulator | 18 September 2021 21:51:57 | - |
| Heroes of the Pacific (Jun 22, 2005 prototype) | 22 June 2005 19:57:55 | PlayStation 2 | Aircraft Combat Sim | 20 March 2021 23:37:14 | - |
| Hexen (Dec 12, 1996 prototype) | 12 December 1996 15:46:37 | Sega Saturn | FPS | 18 October 2016 02:57:40 | - |
| Hexen (Jan 30, 1997 prototype) | 30 January 1997 10:29:34 | Sega Saturn | First Person Shooter | 17 April 2021 21:00:44 | - |
| Hexen (Sep 27, 1994 prototype) | PC | 19 April 2020 19:20:10 | - | ||
| Hexic 2 (Jun 20, 2007 prototype) | 20 June 2007 | Xbox 360 | Puzzle | 28 October 2023 13:49:47 | - |
| Hexic HD (Jan 17, 2006 prototype) | 17 January 2006 | Xbox 360 | Puzzle | 16 August 2023 16:00:43 | - |
| Hexic HD (Jun 14, 2010 prototype) | 14 June 2010 | Xbox 360 | Puzzle | 16 August 2023 15:29:39 | - |
| Hexic HD (Oct 2, 2005 prototype) | 2 October 2005 | Xbox 360 | Puzzle | 16 August 2023 16:01:55 | - |
| Hexic HD (Oct 20, 2011 prototype) | 20 October 2011 | Xbox 360 | Puzzle | 16 August 2023 15:37:33 | - |
| Hexic HD (Sep 24, 2005 prototype) | 24 September 2005 | Xbox 360 | Puzzle | 26 August 2023 00:53:06 | - |
| Hey Arnold! The Movie (Apr 18, 2002 prototype) | 18 April 2002 | Game Boy Advance | Platform | 21 March 2020 18:53:23 | - |
| Hey You, Pikachu! (057 prototype) | Nintendo 64 | 24 December 2023 00:49:15 | - | ||
| Hidden & Dangerous (Jul 30, 2000 prototype) | 30 July 2000 20:37:32 | Dreamcast | Action | 10 August 2019 02:59:40 | - |
| Hidden Photo (Apr 13, 2011 prototype) | 13 April 2011 | Nintendo DS | Puzzle | 24 March 2024 14:20:42 | - |
| Hieperdepiep ik lees (Mar 16, 1996 prototype) | 16 March 1996 | Philips CD-i | Action | 2 August 2017 18:51:00 | - |
| High Heat Major League Baseball 2003 (Dec 16, 2001 prototype) | 16 December 2001 18:17:42 | PlayStation 2 | Sports - Baseball | 20 March 2021 23:58:42 | - |
| High Seas Havoc (early prototype) | 1992 | Sega Mega Drive | Platform | 21 June 2016 02:33:36 | - |
| High Seize (Jul 8, 2005 prototype) | 8 July 2005 | N-Gage | Action | 10 August 2017 18:39:12 | - |
| Hit & Myth (Prototype) | Gizmondo | Action | 29 November 2016 08:46:51 | ✓ | |
| Hit the Ice (Prototype A) | NES | Role-Playing, Sports | 30 April 2022 04:49:20 | ✓ | |
| Hit the Ice (Prototype B) | NES | Role-Playing, Sports | 30 August 2023 14:07:50 | ✓ | |
| Hitler No Fukkatsu: Top Secret (prototype) | NES | Action | 16 March 2019 05:33:00 | - | |
| Hitman 2: Silent Assassin (Aug 12, 2002 prototype) | 12 August 2002 03:33:31 | Xbox | Stealth Action | 18 September 2021 21:38:34 | - |
| Hitman 2: Silent Assassin (Aug 19, 2002 prototype) | 19 August 2002 19:31:24 | PlayStation 2 | Stealth | 2 July 2020 05:31:52 | - |
| Hitman 2: Silent Assassin (Aug 26, 2002 prototype) | 26 August 2002 13:36:00 | Xbox | Stealth Action | 18 September 2021 22:06:57 | - |
| Hitman 2: Silent Assassin (Jul 16, 2002 prototype) | 16 July 2002 | Xbox | Action, Shooter | 3 December 2023 11:42:42 | - |
| Hitman: Absolution (Aug 27, 2012 prototype) | 27 August 2012 00:00:00 | Xbox 360 | Action Adventure | 25 September 2023 21:01:41 | - |
| Hitman: Absolution (E3) | PlayStation 3 | Action-Adventure | 22 December 2023 21:46:24 | - | |
| Hitman: Blood Money (Apr 11, 2006 prototype) | 11 April 2006 15:08:20 | Xbox 360 | Action Adventure | 25 September 2023 20:04:58 | - |
| Hitman: Blood Money (Apr 12, 2006 prototype) | 12 April 2006 15:08:20 | Xbox 360 | Action Adventure | 25 September 2023 20:15:15 | - |
| Hitman: Contracts (Feb 17, 2004 prototype) | 17 February 2004 14:12:33 | Xbox | Stealth Action | 18 September 2021 21:47:28 | - |
| Hitman: Contracts (Feb 8, 2004 prototype) | 8 February 2004 14:01:55 | PlayStation 2 | Third Person Shooter | 20 March 2021 23:23:09 | - |
| Hitman: Contracts (Mar 19, 2004 17.58 prototype) | 19 March 2004 17:58:45 | Xbox | Stealth Action | 18 September 2021 22:04:28 | - |
| Hitman: Contracts (Mar 19, 2004 prototype) | 19 March 2004 01:01:26 | PlayStation 2 | Third Person Shooter | 20 March 2021 23:58:56 | - |
| Hitman: Contracts (Mar 25, 2004 prototype) | 25 March 2004 02:42:07 | Xbox | Stealth Action | 18 September 2021 23:50:58 | - |
| Hokuto no Ken (prototype) | NES | Brawler | 9 January 2024 13:12:29 | - | |
| Hole in the Wall (Jun 23, 2011 prototype) | 23 June 2011 | Xbox 360 | Game Show | 26 August 2023 00:52:41 | - |
| Hole in the Wall (Mar 16, 2011 prototype) | 16 March 2011 | Xbox 360 | Game Show | 16 August 2023 15:33:52 | - |
| Holey Moley (Feb 29, 1984 prototype) | Atari 2600 | 1 January 2023 03:27:31 | ✓ | ||
| Holy Invasion Of Privacy, Badman! What Did I Do To Deserve This? (May 11, 2009 prototype) | 11 May 2009 | PlayStation Portable | Puzzle | 16 February 2023 00:38:08 | - |
| Home Alone 2: Lost in New York (Sep 29, 1993 build) | 29 September 1993 04:19:08 | Sega Mega Drive | Platformer | 27 May 2016 19:44:22 | - |
| Home Run King (Prototype) | Nintendo GameCube | Sports - Baseball | 25 February 2023 01:05:21 | - | |
| Homefront (Dec 16, 2010 prototype) | 16 December 2010 23:04:00 | Xbox 360 | First Person Shooter | 25 September 2023 20:24:33 | - |
| Homefront (Jan 10, 2011 Multiplayer Prototype) | January 10 JL | Xbox 360 | FPS | 21 May 2023 23:37:00 | - |
| Homefront (Jan 17, 2011 prototype) | 17 January 2011 01:56:00 | Xbox 360 | First Person Shooter | 25 September 2023 20:45:17 | - |
| Homefront (Jan 19, 2011 prototype) | 19 January 2011 02:25:19 | Xbox 360 | First Person Shooter | 25 September 2023 21:09:39 | - |
| Homefront (Jun 2, 2011 Prototype) | 2 June 2011 14:33:17 | Xbox 360 | FPS | 21 May 2023 23:16:14 | - |
| Homefront (Mar 22, 2011 prototype) | 22 March 2011 13:18:37 | Xbox 360 | FPS | 16 May 2023 00:51:47 | - |
| Homefront (Mar 25, 2011 prototype) | 25 March 2011 20:16:55 | Xbox 360 | FPS | 21 May 2023 22:24:24 | - |
| Homefront (May 20, 2011 Multiplayer Prototype) | May 20 JL | Xbox 360 | FPS | 21 May 2023 23:54:30 | - |
| Homefront (May 25, 2011 Prototype) | 25 May 2011 11:36:48 | Xbox 360 | FPS | 21 May 2023 22:55:34 | - |
| Homefront (Nov 26, 2010 prototype) | 26 November 2010 23:34:47 | Xbox 360 | First Person Shooter | 25 September 2023 21:17:22 | - |
| Homefront 2 (Aug 6, 2013 prototype) | 6 August 2013 01:29:30 | Xbox 360 | First Person Shooter | 25 September 2023 21:19:52 | ✓ |
| Homefront 2 (Dec 8, 2011 prototype) | 8 December 2011 03:07:47 | Xbox 360 | First Person Shooter | 25 September 2023 20:09:01 | ✓ |
| Homefront 2 (Feb 20, 2012 Prototype) | 20 February 2012 | Xbox 360 | FPS | 23 May 2023 00:14:59 | ✓ |
| Homefront 2 (Jan 16, 2012 Prototype) | 16 January 2012 | Xbox 360 | FPS | 22 May 2023 23:12:12 | ✓ |
| Homefront 2 (Jan 17, 2013 prototype) | 17 January 2013 | Xbox 360 | First Person Shooter | 26 September 2023 13:18:50 | ✓ |
| Homefront 2 (Jan 29, 2013 prototype) | 29 January 2013 | Xbox 360 | FPS | 16 August 2023 15:37:06 | ✓ |
| Homefront 2 (Jul 30, 2013 prototype) | 30 July 2013 23:13:50 | Xbox 360 | First Person Shooter | 25 September 2023 20:12:12 | ✓ |
| Homefront 2 (Jun 3, 2013 prototype) | 3 June 2013 15:24:35 | Xbox 360 | First Person Shooter | 25 September 2023 20:07:41 | ✓ |
| Homefront 2 (Mar 8, 2013 prototype) | 8 March 2013 16:12:27 | Xbox 360 | First Person Shooter | 25 September 2023 20:02:07 | ✓ |
| Homefront 2 (Nov 14, 2012 prototype) | 14 November 2012 00:25:35 | Xbox 360 | First Person Shooter | 25 September 2023 21:19:18 | ✓ |
| Homefront 2 (Nov 15, 2012 00.15 prototype) | 15 November 2012 00:15:36 | Xbox 360 | First Person Shooter | 25 September 2023 21:08:10 | ✓ |
| Homefront 2 (Nov 15, 2012 12.22 prototype) | 15 November 2012 12:22:14 | Xbox 360 | First Person Shooter | 25 September 2023 20:06:55 | ✓ |
| Homefront 2 (Nov 21, 2012 prototype) | 21 November 2012 00:15:18 | Xbox 360 | First Person Shooter | 25 September 2023 20:03:33 | ✓ |
| Homefront 2 (Nov 27, 2012 prototype) | 27 November 2012 00:14:06 | Xbox 360 | First Person Shooter | 25 September 2023 20:28:20 | ✓ |
| Homefront 2 (Nov 28, 2011 prototype) | 28 November 2011 09:44:37 | Xbox 360 | First Person Shooter | 25 September 2023 20:27:21 | ✓ |
| Homefront 2 (Oct 17, 2012 prototype) | 17 October 2012 07:22:04 | Xbox 360 | First Person Shooter | 25 September 2023 20:33:27 | ✓ |
| Homefront 2 (Sep 10, 2012 prototype) | 10 September 2012 23:17:10 | Xbox 360 | First Person Shooter | 25 September 2023 21:14:21 | ✓ |
| Homefront 2 (Sep 23, 2012 prototype) | 23 September 2012 23:18:12 | Xbox 360 | First Person Shooter | 25 September 2023 21:15:44 | ✓ |
| Homefront 2 (Sep 26, 2012 prototype) | 26 September 2012 01:42:31 | Xbox 360 | First Person Shooter | 25 September 2023 20:33:09 | ✓ |
| Hondenliefde (Feb 1, 1995 prototype) | 1 February 1995 | Philips CD-i | FMV | 2 August 2017 18:52:45 | - |
| Honoo no Doukyuuji: Dodge Danpei (Prototype) | SNES | Sports - Soccer | 7 December 2016 19:43:35 | - | |
| Hook (Game Boy prototype) | Game Boy | Platformer | 2 July 2022 13:38:27 | - | |
| Hook (Sega Master System Prototype) | Sega Master System | Action | 11 March 2017 09:12:32 | ✓ | |
| Hoops (Prototype) | NES | Sports - Basketball | 10 December 2022 00:00:15 | - | |
| Hoppin' Mad (prototype) | NES | Action | 4 January 2024 00:26:51 | ✓ | |
| Hot Shots Golf 2 (Dec 7, 1999 prototype) | 7 December 1999 18:12:09 | PlayStation | Sports - Golfing | 17 April 2021 21:14:06 | - |
| Hot Shots Golf 2 (Jan 17, 2000 prototype) | 17 January 2000 14:15:23 | PlayStation | Sports - Golfing | 17 April 2021 21:18:31 | - |
| Hot Shots Golf 3 (Jan 25, 2002 prototype) | 25 January 2002 12:22:08 | PlayStation 2 | Sports - Golf | 20 March 2021 23:53:13 | - |
| Hot Shots Tennis (Mar 30, 2007 prototype) | 30 March 2007 12:31:50 | PlayStation 2 | Sports - Tennis | 20 March 2021 23:34:15 | - |
| Hot Wheels: Velocity X (Jul 16, 2002 prototype) | 16 July 2002 19:56:50 | PlayStation 2 | Racing | 30 December 2023 04:16:12 | - |
| Hot Wheels: World Race (May 12, 2003 prototype) | 12 May 2003 14:08:37 | PC | 7 May 2021 02:09:37 | - | |
| Hotel Mario (Nov 23, 1993 prototype) | 23 November 1993 18:36:02 | Philips CD-i | Puzzle | 10 March 2024 18:01:30 | - |
| Hotline Miami 2: Wrong Number (E3 2013 prototype) | PC | 3 January 2024 22:22:35 | - | ||
| Hottarman no Chitei Tanken (prototype) | NES | Action | 10 January 2024 17:40:43 | - | |
| Hoyle Casino '99 (July 30, 1999 prototype) | 30 July 1999 | PC | Casino | 19 January 2020 14:31:32 | - |
| Huckle and Lowly's Busiest Day Ever (Apr 22, 1994 prototype) | 22 April 1994 09:56:20 | Sega Pico | Educational | 16 June 2016 05:21:56 | - |
| Huckle and Lowly's Busiest Day Ever (Apr 24, 1994 prototype) | 25 April 1994 06:02:22 | Sega Pico | Educational | 16 June 2016 05:22:02 | - |
| Huckle and Lowly's Busiest Day Ever (Apr 26, 1994 prototype A) | 27 April 1994 17:49:56 | Sega Pico | Educational | 16 June 2016 05:22:08 | - |
| Huckle and Lowly's Busiest Day Ever (Apr 26, 1994 prototype B) | 26 April 1994 16:12:40 | Sega Pico | Educational | 16 June 2016 05:22:15 | - |
| Huckle and Lowly's Busiest Day Ever (Apr 26, 1994 prototype D) | Sega Pico | Educational | 16 June 2016 05:22:23 | - | |
| Huckle and Lowly's Busiest Day Ever (Apr 26, 1994 prototype E) | 26 April 1994 22:44:28 | Sega Pico | Educational | 16 June 2016 05:22:30 | - |
| Huckle and Lowly's Busiest Day Ever (Apr 27, 1994 prototype) | 27 April 1994 18:05:48 | Sega Pico | Educational | 16 June 2016 05:22:37 | - |
| Huckle and Lowly's Busiest Day Ever (Jul 21, 1994 prototype F) | 21 July 1994 14:49:38 | Sega Pico | Educational | 16 June 2016 05:22:44 | - |
| Huckle and Lowly's Busiest Day Ever (Mar 2, 1994 prototype) | 2 March 1994 10:53:34 | Sega Pico | Educational | 16 June 2016 05:24:58 | - |
| Huckle and Lowly's Busiest Day Ever (May 10, 1994 prototype D) | 10 May 1994 08:28:18 | Sega Pico | Educational | 16 June 2016 05:26:19 | - |
| Huckle and Lowly's Busiest Day Ever (May 3, 1994 prototype A) | 3 May 1994 15:14:36 | Sega Pico | Educational | 16 June 2016 05:25:05 | - |
| Huckle and Lowly's Busiest Day Ever (May 3, 1994 prototype B) | 3 May 1994 15:25:44 | Sega Pico | Educational | 16 June 2016 05:25:14 | - |
| Huckle and Lowly's Busiest Day Ever (May 3, 1994 prototype C) | 3 May 1994 18:53:02 | Sega Pico | Educational | 16 June 2016 05:25:21 | - |
| Huckle and Lowly's Busiest Day Ever (May 3, 1994 prototype D) | 3 May 1994 19:03:32 | Sega Pico | Educational | 16 June 2016 05:25:27 | - |
| Huckle and Lowly's Busiest Day Ever (May 6, 1994 prototype A) | 6 May 1994 16:35:12 | Sega Pico | Educational | 16 June 2016 05:25:36 | - |
| Huckle and Lowly's Busiest Day Ever (May 6, 1994 prototype B) | 6 May 1994 16:45:54 | Sega Pico | Educational | 16 June 2016 05:25:43 | - |
| Huckle and Lowly's Busiest Day Ever (May 9, 1994 prototype B) | 9 May 1994 13:47:20 | Sega Pico | Educational | 16 June 2016 05:25:51 | - |
| Huckle and Lowly's Busiest Day Ever (May 9, 1994 prototype C) | 9 May 1994 20:05:34 | Sega Pico | Educational | 16 June 2016 05:25:57 | - |
| Huckle and Lowly's Busiest Day Ever (May 9, 1994 prototype D) | 9 May 1994 21:39:18 | Sega Pico | Educational | 16 June 2016 05:26:03 | - |
| Huckle and Lowly's Busiest Day Ever (May 9, 1994 prototype) | 9 May 1994 11:30:44 | Sega Pico | Educational | 16 June 2016 05:26:12 | - |
| Huckle and Lowly's Busiest Day Ever (Oct 4, 1994 prototype) | 3 October 1994 19:18:16 | Sega Pico | Educational | 16 June 2016 05:26:26 | - |
| Huckle and Lowly's Busiest Day Ever (Sep 19, 1994 prototype) | 19 September 1994 10:31:44 | Sega Pico | Educational | 16 June 2016 05:26:33 | - |
| Hugo: Zauberei im Trollwald (Nintendo DS Prototype) | Nintendo DS | 23 November 2021 15:22:11 | - | ||
| Hunter: The Reckoning (Feb 13, 2002 prototype) | 13 February 2002 07:34:25 | Xbox | Hack-And-Slash | 18 September 2021 22:02:34 | - |
| Hunter: The Reckoning (May 2, 2002 prototype) | 2 May 2002 | Xbox | Action, Role-Playing, Shooter | 9 December 2023 14:08:14 | - |
| Hunter: The Reckoning - Wayward (Jun 15, 2003 prototype) | 15 June 2003 21:35:56 | PlayStation 2 | Beat-em-Up | 20 March 2021 23:58:34 | - |
| Hybrid (Apr 8, 2012 Multiplayer Prototype) | 8 April 2012 | Xbox 360 | Third Person Shooter | 23 May 2023 00:24:39 | - |
| Hydro Thunder (Jul 16, 1999 prototype) | 16 July 1999 13:47:50 | Dreamcast | Racing | 12 April 2020 18:51:04 | - |
| Hydro Thunder (Jul 28, 1999 prototype) | 28 July 1999 12:28:48 | Dreamcast | Racing | 18 September 2021 19:43:25 | - |
| Hydro Thunder (Jun 16, 1999 prototype) | 16 June 1999 17:49:18 | Dreamcast | Racing | 16 May 2017 21:38:10 | - |
| Hydro Thunder (Sep 8, 1999 prototype) | 8 September 1999 17:15:42 | Dreamcast | Racing | 7 February 2018 03:25:20 | - |
| Hydro Thunder Hurricane (Apr 2, 2010 prototype) | 2 April 2010 00:20:28 | Xbox 360 | Racing | 25 September 2023 20:08:34 | - |
| Hydro Thunder Hurricane (Jan 29, 2010 prototype) | 29 January 2010 20:31:11 | Xbox 360 | Racing | 18 April 2024 18:08:55 | - |
| Hydro Thunder Hurricane (Mar 3, 2010 prototype) | 3 March 2010 18:35:39 | Xbox 360 | Racing | 18 April 2024 18:40:58 | - |
| Hydrophobia (Jul 17, 2010 prototype) | 17 July 2010 | Xbox 360 | Action Adventure | 26 August 2023 00:55:35 | - |
| Hydrophobia (Mar 8, 2010 prototype) | 8 March 2010 | Xbox 360 | Survival | 16 August 2023 15:47:28 | - |
| Hydrophobia (Nov 25, 2009 prototype) | 25 November 2009 13:22:29 | Xbox 360 | Survival | 19 April 2024 05:49:52 | - |
| Hyper 3-D Pinball (Apr 9, 1996 prototype) | 9 April 1996 11:29:08 | Sega Saturn | Pinball | 8 April 2021 19:08:08 | - |
| Hyper 3-D Pinball (Aug 1, 1996 prototype) | 1 August 1996 15:28:46 | Sega Saturn | Pinball | 17 April 2021 20:53:31 | - |
| Hyper Dunk: The Playoff Edition (Prototype) | Sega Mega Drive | Sports - Basketball | 12 February 2019 17:47:59 | - | |
| Hyper Iria (Jul 3, 1995 prototype) | 3 July 1995 | SNES | Action | 7 December 2016 19:45:39 | - |
| I Am Alive (Jun 15, 2011 prototype) | 15 June 2011 | Xbox 360 | Survival | 16 August 2023 15:45:54 | - |
| I Spy Fun House (prototype) | Nintendo DS | Puzzle | 19 June 2018 14:18:15 | - | |
| I-Ninja (May 11, 2003 prototype) | 11 May 2003 14:44:54 | PlayStation 2 | 3D Platformer | 20 March 2021 23:53:53 | - |
| I-Ninja (Oct 21, 2003 prototype) | 21 October 2003 17:18:47 | Xbox | Platformer | 18 September 2021 21:48:30 | - |
| I-Ninja (Oct 4, 2003 prototype) | 4 October 2003 | Xbox | 17 August 2023 17:56:41 | - | |
| IMSA Racing (Prototype) | Panasonic M2 | Racing | 29 November 2016 07:37:27 | ✓ | |
| Ian Livingstone's Deathtrap Dungeon (Mar 19, 1998 prototype) | 19 March 1998 22:09:08 | PlayStation | Action Adventure | 17 April 2021 21:16:10 | - |
| Ian Livingstone's Deathtrap Dungeon (May 12, 1998 prototype) | 12 May 1998 | PC | 11 August 2023 04:35:09 | - | |
| Ice Age 2: The Meltdown (Dec 12, 2005 prototype) | 12 December 2005 | Nintendo GameCube | Platformer | 9 November 2022 14:18:37 | - |
| Ice Age 2: The Meltdown (GameCube prototype) | Nintendo GameCube | Platformer | 9 November 2022 14:20:10 | - | |
| Ice Age 2: The Meltdown (Jan 23, 2006 prototype) | 23 January 2006 18:40:42 | PlayStation 2 | 3D Platformer | 20 March 2021 23:27:41 | - |
| Ice Age 3: Dawn of the Dinosaurs (Apr 9, 2009 prototype) | 9 April 2009 11:43:20 | Xbox 360 | Action Adventure | 25 September 2023 20:03:13 | - |
| Ice Age 3: Dawn of the Dinosaurs (Aug 19, 2008 prototype) | 19 August 2008 13:19:01 | Xbox 360 | Action Adventure | 25 September 2023 21:08:39 | - |
| Ice Age 3: Dawn of the Dinosaurs (Jan 16, 2009 11:32:46 prototype) | 16 January 2009 11:32:46 | Xbox 360 | Platform | 13 September 2022 16:02:37 | - |
| Ice Age 3: Dawn of the Dinosaurs (Jan 16, 2009 prototype) | 16 January 2009 11:36:58 | Xbox 360 | Action Adventure | 25 September 2023 21:16:56 | - |
| Ice Age 3: Dawn of the Dinosaurs (Jan 19, 2009 prototype) | 19 January 2009 21:21:19 | Xbox 360 | Action Adventure | 25 September 2023 20:26:11 | - |
| Ice Age 3: Dawn of the Dinosaurs (Mar 23, 2009 prototype) | 23 March 2009 21:05:15 | Xbox 360 | Action Adventure | 25 September 2023 20:40:31 | - |
| Icebreaker II (Prototype) | 3DO | Strategy/Action | 29 November 2016 07:41:45 | ✓ | |
| Ico (Aug 6, 2001 prototype) | 6 August 2001 23:11:10 | PlayStation 2 | Action-adventure | 20 March 2021 23:50:52 | - |
| Ico (Dec 28, 2001 prototype) | 28 December 2001 16:58:20 | PlayStation 2 | Action-adventure | 2 July 2020 05:37:33 | - |
| Ico (Nov 17, 2001 prototype) | 17 November 2001 07:28:40 | PlayStation 2 | Action-adventure | 7 January 2024 18:20:13 | - |
| Idol Janshi Suchie-Pai II Omake Disc (Mar 6, 1996 prototype) | 6 March 1996 22:56:46 | Sega Saturn | Board Game | 17 April 2021 20:59:47 | - |
| Iggy's Reckin' Balls (Prototype) | Nintendo 64 | 26 July 2022 14:32:28 | - | ||
| Ikaruga (Jan 24, 2007 prototype) | 24 January 2007 | Xbox 360 | Puzzle, Shoot 'Em Up | 28 October 2023 13:52:39 | - |
| Ikaruga (Nov 28, 2007 prototype) | 28 November 2007 | Xbox 360 | Shoot Em Up | 16 August 2023 15:38:31 | - |
| Ikinari Musician (Prototype) | NES | Shooter | 10 August 2017 22:39:41 | - | |
| Illbleed (Jan 15, 2001 prototype) | 15 January 2001 21:38:48 | Dreamcast | Horror | 18 September 2021 19:42:43 | - |
| Illusion of Gaia (Prototype B) | SNES | Role Playing | 1 January 2022 20:42:59 | - | |
| Illusion of Gaia (prototype) | SNES | Action RPG | 8 April 2017 08:18:01 | - | |
| IloMilo (Apr 30, 2010 prototype) | 30 April 2010 | Xbox 360 | Puzzle | 16 August 2023 15:31:27 | - |
| IloMilo (Jun 11, 2010 prototype) | 11 June 2010 | Xbox 360 | Puzzle | 16 August 2023 15:29:28 | - |
| IloMilo (Jun 3, 2010 prototype) | 11 June 2010 | Xbox 360 | Puzzle | 16 August 2023 15:24:28 | - |
| Ilomilo (Jul 16, 2010 prototype) | 16 July 2010 | Xbox 360 | Puzzle | 26 August 2023 00:58:02 | - |
| Immercenary (Jan 9, 1995 prototype) | 9 January 1995 | 3DO | Role-playing shooter | 23 April 2023 15:05:15 | - |
| Impact Racing (Oct 2, 1995 prototype) | 2 October 1995 20:59:54 | PlayStation | Racing | 17 April 2021 21:16:56 | - |
| Imperium (USA prototype) | SNES | Shooter | 12 February 2022 16:38:03 | - | |
| Import Tuner Challenge (Aug 7, 2006 prototype) | 7 August 2006 08:12:26 | Xbox 360 | Racing | 25 September 2023 21:01:38 | - |
| Impossible Mission (Prototype) | Sega Master System | Action | 11 March 2017 09:15:16 | - | |
| In the Groove 2 (Aug 30, 2005 Prototype) | 30 August 2005 18:50:20 | PlayStation 2 | Rhythm - Dancing | 25 September 2018 01:06:54 | ✓ |
| In the Hunt (Nov 30, 1995 prototype) | 30 November 1995 16:02:54 | PlayStation | Shoot 'em Up | 17 April 2021 21:21:24 | - |
| InFamous (Apr 14, 2009 prototype) | 14 April 2009 | PlayStation 3 | 16 June 2020 13:06:15 | - | |
| InFamous (May 5, 2009 prototype) | 5 May 2009 | PlayStation 3 | Shooter, Platformer, Action-Adventure | 7 February 2024 10:36:02 | - |
| InFamous 2 (UGC Beta EU) | PlayStation 3 | Action-adventure | 7 April 2024 13:30:49 | - | |
| Incoming (Aug 5, 1999 prototype) | 5 August 1999 14:03:50 | Dreamcast | Shooter | 18 September 2021 19:41:48 | - |
| Incredible Crisis (Aug 1, 2000 prototype) | 1 August 2000 00:00:00 | PlayStation | Action | 17 April 2021 21:22:10 | - |
| Incredible Crisis (May 31, 2000 prototype) | 31 May 2000 14:27:32 | PlayStation | Action | 17 April 2021 21:21:56 | - |
| Incubation: Time Is Running Out (Sep 16, 1997 prototype) | 16 September 1997 | PC | 14 August 2023 23:32:14 | - | |
| Indiana Jones and the Emperor's Tomb (Feb 25, 2003 prototype) | 25 February 2003 | Xbox | Action-Adventure | 23 September 2023 20:29:06 | - |
| Indiana Jones and the Emperor's Tomb (Jan 23, 2003 prototype) | 23 January 2003 03:27:58 | Xbox | Action-Adventure | 11 April 2023 13:28:52 | - |
| Indiana Jones and the Infernal Machine (Australian Prototype) | Nintendo 64 | Action | 26 June 2017 17:38:45 | - | |
| Indiana Jones and the Last Crusade (Prototype) | Sega Master System | Action | 11 March 2017 09:18:03 | - | |
| Indigo Prophecy (Aug 16, 2005 prototype) | 16 August 2005 10:26:17 | Xbox | Action-Adventure | 18 September 2021 21:56:47 | - |
| Indigo Prophecy (Jul 19, 2005 prototype) | 19 July 2005 14:50:44 | PlayStation 2 | Adventure | 20 March 2021 23:55:02 | - |
| Indigo Prophecy (Jun 24, 2005 prototype) | 24 June 2005 22:28:40 | PlayStation 2 | Adventure | 20 March 2021 23:55:38 | - |
| Indigo Prophecy (Jun 27, 2005 prototype) | 27 June 2005 10:05:04 | Xbox | Action-Adventure | 18 September 2021 21:39:32 | - |
| Indora no Hikari (Aug 15, 1987 prototype) | 15 August 1987 | NES | Role-playing game | 13 February 2024 17:23:14 | - |
| Industrial Spy: Operation Espionage (Jul 23, 1999 prototype) | 23 July 1999 01:00:00 | Dreamcast | Simulation | 18 September 2021 19:44:42 | - |
| IndyCar Series (Feb 17, 2003 prototype) | 17 February 2003 20:56:42 | PlayStation 2 | Racing | 20 March 2021 23:52:33 | - |
| IndyCar Series (May 13, 2003 prototype) | 13 May 2003 15:40:06 | Xbox | Racing | 18 September 2021 22:01:38 | - |
| IndyCar Series 2005 (Mar 5, 2004 prototype) | 5 March 2004 11:41:47 | Xbox | Racing | 18 September 2021 21:58:08 | - |
| IndyCar Series 2005 (May 5, 2004 prototype) | 5 May 2004 12:13:18 | Xbox | Racing | 18 September 2021 21:43:55 | - |
| Infinity | Game Boy Color | Role-Playing Video Game | 5 August 2016 18:21:08 | ✓ | |
| Injustice: Gods Among Us (Mar 7, 2013 prototype) | 7 March 2013 02:37:57 | Xbox 360 | Fighting | 25 September 2023 20:37:38 | - |
| Insanely Twisted Shadow Planet (Jun 15, 2011 prototype) | 15 June 2011 | Xbox 360 | Action | 16 August 2023 15:40:25 | - |
| Insanely Twisted Shadow Planet (May 11, 2011 prototype) | 11 May 2011 | Xbox 360 | Action | 16 August 2023 15:38:13 | - |
| Inside Pitch 2003 (Mar 28, 2003 prototype) | 28 March 2003 10:14:44 | Xbox | Sports | 18 September 2021 21:36:36 | - |
| Intellivision Lives! (Dec 2, 2003 prototype) | 2 December 2003 20:17:20 | Xbox | Compilation | 16 January 2018 13:14:05 | - |
| Intellivision Lives! (Dec 3, 2002 prototype) | 3 December 2003 01:17:20 | Xbox | 6 April 2023 00:05:14 | - | |
| International Athletics (Nov 4, 2008 Nintendo DS prototype) | 4 November 2008 15:02:42 | Nintendo DS | Sports - Track & Field | 7 February 2024 16:50:00 | - |
| International Superstar Soccer 2 (Jan 11, 2002 prototype) | 11 January 2002 15:16:02 | PlayStation 2 | Sports - Soccer | 5 November 2018 01:47:44 | - |
| International Superstar Soccer 98 (Mar 2, 1998 prototype) | 2 March 1998 | Nintendo 64 | Sports | 16 February 2021 14:45:28 | - |
| International Superstar Soccer Deluxe (SNES Prototype) | SNES | Sports | 23 November 2021 15:08:53 | - | |
| International Superstar Soccer Pro '98 (May 26, 1998 prototype) | 26 May 1998 15:12:28 | PlayStation | Sports - Soccer | 17 April 2021 21:20:51 | - |
| International Tennis Open (Apr 30, 1993 prototype) | 30 April 1993 10:43:19 | Philips CD-i | Reference | 17 April 2021 20:56:07 | - |
| International Track & Field 2000 (Oct 4, 1999 prototype) | 4 October 1999 13:08:08 | PlayStation | Sports - Athletics | 17 April 2021 21:15:10 | - |
| Internet Game Pack (Feb 28, 2001 prototype) | 28 February 2001 01:59:40 | Dreamcast | Multiplayer | 11 March 2019 03:03:36 | ✓ |
| Interpol: The Trail of Dr. Chaos (Dec 3, 2008 prototype) | 3 December 2008 | Xbox 360 | Adventure, Puzzle | 28 October 2023 14:07:55 | - |
| Interpol: The Trail of Dr. Chaos (Sep 23, 2008 prototype) | 23 September 2008 | Xbox 360 | Puzzle | 16 August 2023 15:47:10 | - |
| Inuyasha: The Secret of the Cursed Mask (Aug 30, 2004 prototype) | 30 August 2004 07:10:00 | PlayStation 2 | Role playing | 20 March 2021 23:42:38 | - |
| Inuyasha: The Secret of the Cursed Mask (Sep 3, 2004 prototype) | 3 September 2004 06:50:00 | PlayStation 2 | Role playing | 20 March 2021 23:52:06 | - |
| Invasion from Beyond (Sep 29, 1998 prototype) | 29 September 1998 16:38:42 | PlayStation | Action | 17 April 2021 21:17:55 | - |
| Invincible Tiger: The Legend of Han Tao (Aug 13, 2009 prototype) | 13 August 2009 | Xbox 360 | Brawler | 28 October 2023 14:17:49 | - |
| Ion Assault (Jul 18, 2009 prototype) | 18 July 2009 | Xbox 360 | Shooter | 16 August 2023 15:58:34 | - |
| Iridion II (prototype) | Game Boy Advance | 20 April 2020 05:36:32 | - | ||
| Iron Angel (Sep 5, 1994 demo) | 5 September 1994 | PC | 11 October 2022 21:12:04 | ✓ | |
| Iron Man (Mar 12, 2008 prototype) | 12 March 2008 | Nintendo Wii | Action | 25 December 2022 23:23:23 | - |
| Iron Phoenix (May 9, 2004 prototype) | 9 May 2004 14:16:32 | Xbox | Fighting | 1 May 2024 03:49:42 | - |
| Iron Soldier 3 (May 1, 2000 prototype) | 1 May 2000 00:04:42 | PlayStation | Vehicular Combat | 17 April 2021 21:15:06 | - |
| Iron Storm (Feb 7, 1996 prototype) | 7 February 1996 15:23:36 | Sega Saturn | Real Time Strategy | 17 April 2021 20:56:22 | - |
| Iron Storm (Mar 27, 1996 prototype) | 27 March 1996 15:00:09 | Sega Saturn | Real Time Strategy | 17 April 2021 20:53:44 | - |
| Iron Tank: The Invasion of Normandy (Prototype) | NES | Action | 10 December 2022 00:00:12 | - | |
| Ironclad (Apr 8, 2013 prototype) | 8 April 2013 | Xbox 360 | Action | 16 August 2023 15:42:36 | ✓ |
| Irritating Stick (Nov 4, 1998 prototype) | 4 November 1998 09:34:54 | PlayStation | Action | 17 April 2021 21:17:25 | - |
| Islands of Wakfu (Oct 11, 2010 prototype) | 11 October 2010 | Xbox 360 | Action Adventure | 16 August 2023 15:27:06 | - |
| Isle of Minno (May 12, 2006 prototype) | 12 May 2006 12:52:11 | PlayStation Portable | Adventure | 1 August 2016 04:12:56 | ✓ |
| It Lives! (prototype) | Nintendo DS | Action | 10 May 2024 02:36:44 | ✓ | |
| Itadaki Street 2: Neon Sign ha Bara Iro ni (Dec 20, 1993 prototype) | 20 December 1993 08:36:45 | SNES | Board Game | 7 December 2016 19:49:28 | - |
| Ixion (prototype) | Atari 2600 | 1 January 2023 03:20:10 | ✓ | ||
| J.League Excite Stage '95 (Prototype) | SNES | Sports - Soccer | 7 December 2016 19:53:14 | - | |
| JSRF: Jet Set Radio Future (Dec 4, 2001 prototype) | 4 December 2001 01:38:23 | Xbox | Action, Sports | 18 September 2021 21:42:56 | - |
| JSRF: Jet Set Radio Future (Jan 7, 2002 prototype) | 7 January 2002 12:26:05 | Xbox | Action, Sports | 18 September 2021 22:06:16 | - |
| JVC CD-ROM Emulator System | Sega Saturn | Dev Kit | 2 May 2016 17:38:32 | - | |
| Jack Nicklaus Golf (Jan 13, 1995 prototype - V003) | 13 January 1995 | Atari Jaguar | Sports | 1 November 2016 21:37:22 | ✓ |
| Jack Nicklaus Golf (Jan 16, 1995 prototype - V004) | 16 January 1995 | Atari Jaguar | Sports | 1 November 2016 21:38:40 | ✓ |
| Jack Nicklaus Golf (Jul 4, 1994 prototype - V002) | 4 July 1994 | Atari Jaguar | Sports | 1 November 2016 21:39:33 | ✓ |
| Jack Nicklaus Golf (Jul 4, 1994 prototype - V002A) | 4 July 1994 | Atari Jaguar | Sports | 1 November 2016 21:40:07 | ✓ |
| Jack Nicklaus Golf (Jul 4, 1994 prototype) | 4 July 1994 | Atari Jaguar | Sports - Golf | 29 December 2017 14:47:38 | ✓ |
| Jackass: The Game (Apr 27, 2007 prototype) | 27 April 2007 16:16:55 | PlayStation 2 | Action | 20 March 2021 23:45:47 | - |
| Jacked (May 4, 2004 prototype) | 4 May 2004 01:03:00 | PlayStation 2 | Racing | 24 June 2020 21:28:42 | - |
| Jackie Chan Adventures (Jul 19, 2004 prototype) | 19 July 2004 11:21:52 | PlayStation 2 | Action | 3 July 2020 17:39:01 | - |
| Jackie Chan Adventures (Jun 25, 2003 prototype) | 25 June 2003 04:33:21 | PlayStation 2 | Action Platformer | 21 April 2024 22:00:28 | - |
| Jackie Chan Stuntmaster (Aug 27, 1998 prototype) | 27 August 1998 14:46:46 | PlayStation | Beat 'em up | 17 April 2021 21:24:07 | - |
| Jackie Chan Stuntmaster (Dec 12, 1999 prototype) | 12 December 1999 11:45:33 | PlayStation | Beat 'em up | 17 April 2021 21:18:43 | - |
| Jackie Chan Stuntmaster (Sep 13, 1999 prototype) | 13 September 1999 13:30:48 | PlayStation | Beat 'em up | 17 April 2021 21:20:28 | - |
| Jade Cocoon 2 (Sep 28, 2001 prototype) | 28 September 2001 14:46:12 | PlayStation 2 | Action | 20 March 2021 23:57:43 | - |
| Jade Cocoon: Story of the Tamamayu (Aug 5, 1999 prototype) | 5 August 1999 22:48:18 | PlayStation | Role playing | 28 June 2020 16:53:07 | - |
| Jade Empire (Mar 2, 2005 prototype) | 2 March 2005 23:09:10 | Xbox | Action role-playing | 1 May 2024 03:27:10 | - |
| Jak 3 (Aug 24, 2004 demo) | 24 August 2004 00:29:29 | PlayStation 2 | Action | 27 October 2018 21:58:39 | - |
| Jak 3 (Aug 5, 2004 demo) | 5 August 2004 00:03:42 | PlayStation 2 | Action | 27 October 2018 22:00:01 | - |
| Jak 3 (Jul 12, 2004 prototype) | 12 July 2004 | PlayStation 2 | Action-adventure, third-person shooter | 7 April 2019 11:14:39 | - |
| Jak 3 (Oct 1, 2004 prototype) | 1 October 2004 | PlayStation 2 | Action-adventure, third-person shooter | 1 June 2019 21:00:13 | - |
| Jak 3 (Sep 14, 2004 prototype) | 14 September 2004 11:17:03 | PlayStation 2 | Action-adventure, third-person shooter | 27 October 2018 21:36:46 | - |
| Jak 3 (Sep 29, 2004 prototype) | 28 September 2004 03:33:54 | PlayStation 2 | Action | 20 March 2021 23:55:23 | - |
| Jak II (Aug 18, 2003 prototype) | 18 August 2003 06:06:36 | PlayStation 2 | Action-adventure, third-person shooter | 15 May 2020 08:24:05 | - |
| Jak II (Jul 13, 2003 NTSC prototype) | 13 July 2003 08:00:20 | PlayStation 2 | Action | 6 August 2022 17:55:24 | - |
| Jak II (Jul 13, 2003 PAL prototype) | 13 July 2003 08:00:20 | PlayStation 2 | Action | 14 September 2019 22:14:29 | - |
| Jak II (Jul 17, 2003 demo) | 17 July 2003 07:22:00 | PlayStation 2 | Action | 22 March 2019 00:56:31 | - |
| Jak II (Jun 9, 2003 demo) | 9 June 2003 03:34:00 | PlayStation 2 | Action | 22 September 2021 12:18:06 | - |
| Jak II (Mar 15, 2003 demo) | 15 March 2003 05:32:37 | PlayStation 2 | Action | 22 March 2019 00:54:54 | - |
| Jak X: Combat Racing (Jul 15, 2005 demo) | 15 July 2005 20:57:30 | PlayStation 2 | Racing | 24 February 2021 21:19:43 | - |
| Jak X: Combat Racing (Jun 22, 2005 NTSC prototype) | 22 June 2005 17:23:00 | PlayStation 2 | Racing | 6 August 2019 10:47:16 | - |
| Jak X: Combat Racing (Jun 22, 2005 PAL prototype) | 22 June 2005 17:58:56 | PlayStation 2 | Racing | 6 June 2019 20:22:38 | - |
| Jak and Daxter: The Lost Frontier (Aug 6, 2009 prototype) | 6 August 2009 | PlayStation Portable | 18 August 2023 18:35:48 | - | |
| Jak and Daxter: The Precursor Legacy (Oct 19, 2001 prototype) | 19 October 2001 19:15:28 | PlayStation 2 | Action-adventure | 20 March 2021 23:48:44 | - |
| Jak and Daxter: The Precursor Legacy (Oct 30, 2001 demo) | 30 October 2001 11:30:00 | PlayStation 2 | Platformer | 19 October 2021 19:59:02 | - |
| Jak and Daxter: The Precursor Legacy (Sep 18, 2001 JPN demo) | 18 September 2001 15:20:00 | PlayStation 2 | 24 February 2021 10:25:52 | - | |
| Jak and Daxter: The Precursor Legacy (Sep 18, 2001 USA demo) | 18 September 2001 11:56:10 | PlayStation 2 | 15 May 2019 15:06:10 | - | |
| Jam Party (Feb 1, 2012 prototype) | 1 February 2012 21:43:00 | Xbox 360 | Rhythm | 19 April 2024 05:49:48 | - |
| James 'Buster' Douglas Knockout Boxing (Prototype) | Sega Master System | Sports - Boxing | 11 March 2017 09:21:09 | - | |
| James Bond 007 (Prototype A) | Atari 2600 | Action | 9 May 2023 00:18:47 | - | |
| James Bond 007 (Prototype B) | Atari 2600 | Action | 9 May 2023 00:23:05 | - | |
| James Bond 007 (Prototype C) | Atari 2600 | Action | 9 May 2023 00:28:44 | - | |
| James Bond 007 (Prototype D) | Atari 2600 | Action | 9 May 2023 00:31:00 | - | |
| James Bond 007: Agent Under Fire (Jan 25, 2002 prototype) | 25 January 2002 | Nintendo GameCube | FPS | 1 May 2019 21:51:05 | - |
| James Cameron's Avatar: The Game (Oct 13, 2009 prototype) | 13 October 2009 00:00:00 | Xbox 360 | Action Adventure | 25 September 2023 20:05:42 | - |
| James Cameron's Avatar: The Game (Oct 29, 2009 prototype) | 29 October 2009 | Xbox 360 | Shooter, Action-Adventure | 16 March 2024 09:26:58 | - |
| James Cameron's Avatar: The Game (Oct 8, 2009 prototype) | 8 October 2009 | Xbox 360 | Third-person Shooter, Action-adventure | 25 December 2022 23:36:41 | - |
| James Cameron's Dark Angel (Oct 4, 2002 prototype) | 4 October 2002 15:16:55 | PlayStation 2 | Action Adventure | 20 March 2021 23:30:42 | - |
| James Cameron's Dark Angel (Oct 8, 2002 prototype) | 8 October 2002 05:48:51 | Xbox | Beat-Em-Up | 18 September 2021 21:47:08 | - |
| Jeanne d'Arc (Aug 17, 2006 prototype) | 17 August 2006 15:22:14 | PlayStation Portable | Tactical role-playing | 11 December 2018 13:03:54 | - |
| Jeep Jamboree: Off Road Adventure (Prototype) | Game Boy | Racing | 17 October 2022 01:02:27 | - | |
| Jeff's Shoot'Em Up (Prototype) | SNES | Shooter | 11 August 2017 22:12:02 | ✓ | |
| Jekyll & Hyde: The Untold Story (Dec 5, 2000 prototype) | 5 December 2000 23:00:34 | Dreamcast | Mystery | 24 December 2022 15:17:52 | ✓ |
| Jekyll & Hyde: The Untold Story (Sep 1, 2000 prototype) | 1 September 2000 21:52:10 | Dreamcast | Mystery | 24 December 2022 15:16:39 | ✓ |
| Jelly Boy (Prototype A) | SNES | Action | 25 May 2021 13:15:39 | - | |
| Jelly Boy (Prototype B) | SNES | Action | 23 December 2021 20:35:41 | - | |
| Jelly Boy 2 (prototype) | SNES | 22 May 2022 15:24:03 | ✓ | ||
| Jeremy McGrath Supercross 2000 (Prototype) | Nintendo 64 | Racing | 13 April 2022 13:56:26 | - | |
| Jeremy McGrath Supercross 2000 (v0.800 prototype) | Dreamcast | Racing | 22 November 2016 09:32:18 | - | |
| Jeremy McGrath Supercross World (Aug 14, 2001 prototype) | 14 August 2001 17:24:14 | PlayStation 2 | Arcade Racing | 20 March 2021 20:40:50 | - |
| Jeremy McGrath Supercross World (Aug 28, 2001 prototype) | 28 August 2001 20:48:20 | PlayStation 2 | Arcade Racing | 20 March 2021 23:58:47 | - |
| Jeremy McGrath Supercross World (May 10, 2001 prototype) | 10 May 2001 21:46:30 | PlayStation 2 | Racing | 29 September 2022 13:33:51 | - |
| Jeremy McGrath Supercross World (Nov 15, 2001 prototype) | 15 November 2001 10:50:16 | PlayStation 2 | Arcade Racing | 20 March 2021 20:45:30 | - |
| Jeremy McGrath Supercross World (Nov 19, 2001 prototype) | 19 November 2001 14:22:28 | PlayStation 2 | Arcade Racing | 20 March 2021 20:42:50 | - |
| Jeremy McGrath Supercross World (Oct 1, 2001 prototype) | 1 October 2001 00:22:44 | PlayStation 2 | Arcade Racing | 20 March 2021 23:57:35 | - |
| Jeremy McGrath Supercross World (Oct 2, 2001 prototype) | 2 October 2001 23:04:20 | PlayStation 2 | Arcade Racing | 20 March 2021 23:29:29 | - |
| Jeremy McGrath Supercross World (Sep 12, 2001 prototype) | 12 September 2001 00:36:32 | PlayStation 2 | Arcade Racing | 20 March 2021 23:45:17 | - |
| Jeremy McGrath Supercross World (Sep 13, 2001 00.29 prototype) | 13 September 2001 00:29:58 | PlayStation 2 | Arcade Racing | 20 March 2021 23:53:46 | - |
| Jeremy McGrath Supercross World (Sep 13, 2001 00.56 prototype) | 13 September 2001 00:56:46 | PlayStation 2 | Arcade Racing | 20 March 2021 20:40:33 | - |
| Jeremy McGrath Supercross World (Sep 13, 2001 21.51 prototype) | 13 September 2001 21:51:56 | PlayStation 2 | Arcade Racing | 20 March 2021 20:46:00 | - |
| Jeremy McGrath Supercross World (Sep 15, 2001 prototype) | 15 September 2001 09:30:24 | PlayStation 2 | Arcade Racing | 20 March 2021 23:44:24 | - |
| Jeremy McGrath Supercross World (Sep 18, 2001 prototype) | 18 September 2001 19:19:14 | PlayStation 2 | Arcade Racing | 20 March 2021 23:50:20 | - |
| Jeremy McGrath Supercross World (Sep 19, 2001 prototype) | 19 September 2001 18:27:14 | PlayStation 2 | Arcade Racing | 20 March 2021 23:45:47 | - |
| Jeremy McGrath Supercross World (Sep 21, 2001 prototype) | 21 September 2001 21:38:04 | PlayStation 2 | Arcade Racing | 20 March 2021 23:45:20 | - |
| Jeremy McGrath Supercross World (Sep 26, 2001 11.38 prototype) | 26 September 2001 11:38:20 | PlayStation 2 | Racing | 29 September 2022 13:26:40 | - |
| Jeremy McGrath Supercross World (Sep 27, 2001 03.38 prototype) | 27 September 2001 03:38:20 | PlayStation 2 | Arcade Racing | 20 March 2021 23:50:05 | - |
| Jeremy McGrath Supercross World (Sep 27, 2001 13.42 prototype) | 27 September 2001 13:42:44 | PlayStation 2 | Arcade Racing | 20 March 2021 20:46:24 | - |
| Jeremy McGrath Supercross World (Sep 27, 2001 16.03 prototype) | 27 September 2001 16:03:20 | PlayStation 2 | Arcade Racing | 20 March 2021 20:44:48 | - |
| Jeremy McGrath Supercross World (Sep 29, 2001 prototype) | 29 September 2001 01:57:04 | PlayStation 2 | Arcade Racing | 20 March 2021 20:47:26 | - |
| Jeremy McGrath Supercross World (Sep 5, 2001 prototype) | 5 September 2001 22:32:52 | PlayStation 2 | Arcade Racing | 20 March 2021 23:57:51 | - |
| Jersey Devil (Apr 28, 1998 prototype) | 28 April 1998 18:00:41 | PlayStation | Platformer | 17 April 2021 21:20:16 | - |
| Jesse "The Body" Ventura Wrestling Superstars (Mar 2, 1992 prototype) | 2 March 1992 15:55:44 | Sega Mega Drive | Fighting | 24 April 2016 15:04:05 | - |
| Jet Force Gemini (Aug 19, 1999 demo) | 19 August 1999 15:26:00 | Nintendo 64 | Action | 26 June 2017 20:25:10 | - |
| Jet Grind Radio (Aug 22, 2000 prototype) | 22 August 2000 10:07:40 | Dreamcast | Action | 18 September 2021 19:44:27 | - |
| Jet Li: Rise to Honor (Sep 15, 2003 prototype) | 15 September 2003 18:01:53 | PlayStation 2 | Beam-em-Up | 20 March 2021 23:55:47 | - |
| Jet Moto 2124 (Jan 18, 2000 prototype) | 18 January 2000 13:51:11 | PlayStation | Racing | 20 November 2016 18:56:56 | ✓ |
| Jet Moto 3 (Jun 16, 1999 prototype) | 16 June 1999 18:50:32 | PlayStation | Racing | 17 April 2021 21:24:02 | - |
| Jet Moto 3 (Oct 11, 1999 prototype) | 11 October 1999 | PlayStation | Racing | 4 March 2023 17:54:52 | - |
| Jet Pak Jak (Prototype) | Game Boy | Action | 1 January 2022 20:41:11 | ✓ | |
| Jet Pak Man (Prototype) | Game Boy | Action | 1 January 2022 20:46:09 | ✓ | |
| Jet Set Radio (Apr 28, 2000 prototype) | 28 April 2000 | Dreamcast | 18 August 2022 01:08:31 | - | |
| Jet Set Radio (May 31, 2012 Prototype) | 31 May 2012 | Xbox 360 | Platformer | 16 September 2023 19:14:42 | - |
| Jet Set Radio (Oct 3, 2000 prototype) | 3 October 2000 12:15:43 | Dreamcast | Action | 26 June 2017 18:53:34 | - |
| Jet X2O (Jul 3, 2002 prototype) | 3 July 2002 12:07:32 | PlayStation 2 | Arcade Racing | 20 March 2021 23:28:51 | - |
| Jetpac Refuelled (Feb 13, 2007 prototype) | 13 February 2007 | Xbox 360 | Jetman | 28 October 2023 14:25:31 | - |
| Jetpac Refuelled (Feb 19, 2007 prototype) | 19 February 2007 | Xbox 360 | Jetman | 28 October 2023 14:23:46 | - |
| Jetpac Refuelled (Mar 2, 2007 prototype) | 2 March 2007 | Xbox 360 | Action | 16 August 2023 15:53:54 | - |
| Jetpack (Prototype) | Game Boy | Action | 20 November 2016 09:30:58 | - | |
| Jewel Quest (Feb 22, 2006 prototype) | 22 February 2006 | Xbox 360 | Strategy, Puzzle | 15 December 2023 19:46:08 | - |
| Jewel Quest (Unknown prototype) | Xbox 360 | Strategy, Puzzle | 15 December 2023 23:00:13 | - | |
| Jigsaw Party (Mar 25, 1994 prototype) | 25 March 1994 09:28:05 | SNES | Puzzle | 1 January 2020 02:02:40 | - |
| Jikkyou Powerful Pro Yakyuu 4 (Nov 30, 1996 prototype) | 30 November 1996 | Nintendo 64 | Sports | 8 February 2021 14:41:58 | - |
| Jimmy Connors Pro Tennis Tour (Prototype) | SNES | Sports - Tennis | 26 January 2020 16:30:22 | - | |
| Jimmy Connors Tennis (Prototype) | Game Boy | Sports - Tennis | 1 January 2022 23:50:03 | - | |
| Jimmy Johnson NFL '97 (Oct 27, 1996 prototype) | 27 October 1996 17:48:14 | PlayStation | Sports - Football | 17 April 2021 21:13:53 | - |
| Jimmy Johnson's VR Football '98 (Aug 21, 1997 prototype) | 21 August 1997 11:49:34 | PlayStation | Sports - Football | 17 April 2021 21:14:08 | - |
| Jimmy Johnson's VR Football '98 (Jun 27, 1997 prototype) | 27 June 1997 16:13:22 | PlayStation | Sports - Football | 17 April 2021 21:18:36 | - |
| Jimmy Johnson's VR Football '98 (Sep 4, 1997 prototype) | 4 September 1997 16:17:30 | PlayStation | Sports - Football | 17 April 2021 21:20:22 | - |
| Jimmy Neutron vs. Jimmy Negatron (Apr 16, 2002 prototype) | 16 April 2002 18:10:54 | Game Boy Advance | Action | 10 November 2022 13:53:03 | - |
| Jimmy Neutron vs. Jimmy Negatron (Apr 29, 2002 prototype) | 29 April 2002 16:54:04 | Game Boy Advance | Action | 9 March 2023 16:30:10 | - |
| Jimmy Neutron vs. Jimmy Negatron (Aug 10, 2002 prototype) | 10 August 2002 05:18:18 | Game Boy Advance | Action | 1 April 2023 14:56:18 | - |
| Jimmy Neutron vs. Jimmy Negatron (Feb 4, 2002 prototype) | 4 February 2002 16:32:32 | Game Boy Advance | Action | 10 November 2022 13:45:53 | - |
| Jimmy Neutron vs. Jimmy Negatron (Jan 14, 2002 prototype) | 14 January 2002 16:58:52 | Game Boy Advance | Action | 10 November 2022 13:44:58 | - |
| Jimmy Neutron vs. Jimmy Negatron (Jul 1, 2002 prototype) | 1 July 2002 05:36:14 | Game Boy Advance | Action | 1 April 2023 14:59:27 | - |
| Jimmy Neutron vs. Jimmy Negatron (Jul 12, 2002 prototype) | 12 July 2002 11:06:26 | Game Boy Advance | Action | 9 June 2023 20:17:23 | - |
| Jimmy Neutron vs. Jimmy Negatron (Jul 23, 2002 prototype) | 23 July 2002 10:44:22 | Game Boy Advance | Action | 9 June 2023 20:18:31 | - |
| Jimmy Neutron vs. Jimmy Negatron (Jun 11, 2002 prototype) | 11 June 2002 17:36:40 | Game Boy Advance | Action | 10 March 2023 15:45:34 | - |
| Jimmy Neutron vs. Jimmy Negatron (Jun 12, 2002 prototype) | 11 June 2002 17:36:40 | Game Boy Advance | Action | 10 March 2023 15:48:25 | - |
| Jimmy Neutron vs. Jimmy Negatron (Jun 14, 2002 prototype) | 14 June 2002 17:36:40 | Game Boy Advance | Action | 10 March 2023 15:49:54 | - |
| Jimmy Neutron vs. Jimmy Negatron (Jun 18, 2002 prototype) | 18 June 2002 07:41:52 | Game Boy Advance | Action | 20 March 2023 20:50:47 | - |
| Jimmy Neutron vs. Jimmy Negatron (Jun 21, 2002 prototype) | 21 June 2002 17:36:40 | Game Boy Advance | Action | 20 March 2023 20:49:33 | - |
| Jimmy Neutron vs. Jimmy Negatron (Jun 25, 2002 prototype) | 25 June 2002 17:36:40 | Game Boy Advance | Action | 20 March 2023 20:53:55 | - |
| Jimmy Neutron vs. Jimmy Negatron (Jun 26, 2002 prototype) | 26 June 2002 19:22:32 | Game Boy Advance | Action | 1 April 2023 14:53:12 | - |
| Jimmy Neutron vs. Jimmy Negatron (Jun 27, 2002 prototype) | 27 June 2002 19:06:22 | Game Boy Advance | Action | 1 April 2023 14:54:07 | - |
| Jimmy Neutron vs. Jimmy Negatron (Jun 28, 2002 prototype) | 28 June 2002 04:15:06 | Game Boy Advance | Action | 1 April 2023 14:57:49 | - |
| Jimmy Neutron vs. Jimmy Negatron (Jun 4, 2002 prototype) | 4 June 2002 16:28:04 | Game Boy Advance | Action | 9 March 2023 16:39:17 | - |
| Jimmy Neutron vs. Jimmy Negatron (Jun 7, 2002 prototype) | 7 June 2002 14:33:38 | Game Boy Advance | Action | 10 March 2023 15:39:57 | - |
| Jimmy Neutron vs. Jimmy Negatron (Mar 1, 2002 prototype) | 1 March 2002 16:14:02 | Game Boy Advance | Action | 10 November 2022 13:47:30 | - |
| Jimmy Neutron vs. Jimmy Negatron (Mar 9, 2002 prototype) | 9 March 2002 16:48:24 | Game Boy Advance | Action | 9 March 2023 16:13:02 | - |
| Jimmy Neutron vs. Jimmy Negatron (May 10, 2002 multiplayer prototype) | 10 May 2002 12:42:24 | Game Boy Advance | Action | 9 June 2023 20:14:56 | - |
| Jimmy Neutron vs. Jimmy Negatron (May 15, 2002 prototype) | 15 May 2002 17:12:16 | Game Boy Advance | Action | 10 November 2022 13:55:03 | - |
| Jimmy Neutron vs. Jimmy Negatron (May 28, 2002 prototype) | 28 May 2002 08:22:52 | Game Boy Advance | Action | 10 November 2022 13:50:45 | - |
| Jimmy Neutron vs. Jimmy Negatron (May 31, 2002 prototype) | 31 May 2002 | Game Boy Advance | Action | 27 December 2022 15:26:12 | - |
| Jimmy White's 2: Cueball (Sep 15, 1999 prototype) | 15 September 1999 12:57:40 | Dreamcast | Table | 18 September 2021 19:41:22 | - |
| JoJo's Bizarre Adventure (Dec 20, 1999 prototype) | 20 December 1999 10:21:52 | PlayStation | Fighting | 12 September 2020 23:13:33 | - |
| JoJo's Bizarre Adventure (Jan 11, 2000 prototype) | 11 January 2000 16:28:16 | Dreamcast | Fighting | 10 August 2019 02:25:54 | - |
| Joe & Mac (Sep 28, 1992 Game Boy prototype) | 28 September 1992 | Game Boy | Platformer | 27 September 2021 13:27:59 | - |
| Joe & Mac 2: Lost in the Tropics (FUCK prototype) | SNES | Action | 4 January 2024 21:19:33 | - | |
| Joe & Mac 2: Lost in the Tropics (prototype) | SNES | Platformer | 19 September 2019 01:23:01 | - | |
| Joe Guard (prototype) | Philips CD-i | FMV | 3 August 2017 03:09:04 | ✓ | |
| John Madden Football (Nov 7, 1990 prototype) | 7 November 1990 14:17:10 | Sega Mega Drive | Sports | 13 May 2016 15:55:11 | - |
| John Madden Football (Prototype A) | Game Boy | Sports - Football | 1 January 2022 23:32:53 | ✓ | |
| Johnny Bazookatone (Nov 23, 1995 prototype) | 23 November 1995 01:03:32 | Sega Saturn | Adventure | 8 May 2021 20:08:47 | - |
| Johnny Mnemonic (Mar 13, 1995 prototype) | 13 March 1995 17:38:41 | Sega CD | FMV | 18 November 2016 09:41:47 | ✓ |
| Joust (Nov 3, 2005 prototype) | 3 November 2005 | Xbox 360 | Action | 16 August 2023 15:58:52 | - |
| Joust (Oct 11, 2005 prototype) | 11 October 2005 | Xbox 360 | Action | 16 August 2023 15:30:14 | - |
| Joy Ride Turbo (Apr 17, 2012 prototype) | 17 April 2012 | Xbox 360 | Racing | 26 August 2023 00:58:58 | - |
| Joy Ride Turbo (Apr 5, 2012 prototype) | 5 April 2012 04:15:07 | Xbox 360 | Racing | 26 August 2023 01:00:12 | - |
| Joy Ride Turbo (Feb 20, 2012 prototype) | 20 February 2012 18:35:59 | Xbox 360 | Racing | 26 August 2023 00:55:23 | - |
| Joy Ride Turbo (Jul 24, 2012 prototype) | 24 July 2012 11:32:56 | Xbox 360 | Racing | 26 August 2023 00:58:26 | - |
| Joy Ride Turbo (Jul 26, 2012 01.36 prototype) | 26 July 2012 | Xbox 360 | Racing | 26 August 2023 00:50:22 | - |
| Joy Ride Turbo (Jul 26, 2012 21.22 prototype) | 26 July 2012 | Xbox 360 | Racing | 26 August 2023 00:56:50 | - |
| Joy Ride Turbo (Jul 26, 2012 prototype) | 26 July 2012 01:36:18 | Xbox 360 | Racing | 25 September 2023 20:54:24 | - |
| Joy Ride Turbo (Jul 27, 2012 18.15 prototype) | 27 July 2012 18:15:10 | Xbox 360 | Racing | 25 September 2023 20:06:24 | - |
| Joy Ride Turbo (Jul 27, 2012 23.35 prototype) | 27 July 2012 23:35:27 | Xbox 360 | Racing | 25 September 2023 20:29:40 | - |
| Joy Ride Turbo (Jul 27, 2012 prototype) | 27 July 2012 | Xbox 360 | Racing | 26 August 2023 00:53:59 | - |
| Joy Ride Turbo (Mar 22, 2012 prototype) | 22 March 2012 21:41:21 | Xbox 360 | Racing | 26 August 2023 00:57:09 | - |
| Joy Ride Turbo (Mar 23, 2012 prototype) | 23 March 2012 21:52:39 | Xbox 360 | Racing | 26 August 2023 00:50:28 | - |
| Joy Ride Turbo (Mar 29, 2012 prototype) | 29 March 2012 00:39:00 | Xbox 360 | Racing | 26 August 2023 00:57:31 | - |
| Joy Ride Turbo (Mar 30, 2012 prototype) | 30 March 2012 | Xbox 360 | Racing | 26 August 2023 00:56:51 | - |
| Judgement Force (Nov 26, 1996 prototype) | 26 November 1996 | Sega Saturn | Beat 'em up | 14 May 2016 20:49:03 | ✓ |
| Juiced (Aug 4, 2004 prototype) | 4 August 2004 13:20:02 | Xbox | Racing | 18 September 2021 21:41:49 | - |
| Juiced (Jul 13, 2004 Acclaim Prototype) | 13 July 2004 | Xbox | Racing | 29 November 2016 23:48:55 | ✓ |
| Juiced (Jul 28, 2004 prototype) | 28 July 2004 18:16:22 | PlayStation 2 | Racing | 20 March 2021 23:43:55 | - |
| Juiced (Jun 11, 2004 Acclaim Prototype) | 11 June 2004 03:39:20 | PlayStation 2 | Racing | 3 March 2019 15:49:39 | ✓ |
| Juiced (Jun 2, 2004 prototype) | 19 June 2004 | PC | Racing | 9 October 2022 14:06:48 | - |
| Juiced (May 13, 2004 prototype) | 13 May 2004 10:06:47 | Xbox | Racing | 18 September 2021 21:24:10 | - |
| Juiced (May 5, 2004 Acclaim Prototype) | 5 May 2004 17:15:59 | Xbox | Racing | 24 February 2021 16:13:37 | ✓ |
| Juiced 2: Hot Import Nights (Aug 1, 2007 prototype) | 1 August 2007 14:17:00 | Xbox 360 | Racing | 25 September 2023 21:10:12 | - |
| Juiced 2: Hot Import Nights (Aug 10, 2007 prototype) | 10 August 2007 | Xbox 360 | Auto Racing Sim | 17 January 2023 09:46:47 | - |
| Juiced 2: Hot Import Nights (Aug 7, 2007 prototype) | 7 August 2007 15:02:22 | Xbox 360 | Racing | 25 September 2023 20:41:00 | - |
| Juiced 2: Hot Import Nights (Aug 9, 2007 prototype) | 9 August 2007 10:29:20 | PlayStation 2 | Auto Racing Sim | 20 March 2021 23:46:04 | - |
| Juiced 2: Hot Import Nights (May 30, 2007 Prototype) | May 30 JL | Xbox 360 | Racing | 23 May 2023 00:49:42 | - |
| Juiced 2: Hot Import Nights (May 31, 2007 prototype) | 30 May 2007 | Xbox 360 | Auto Racing Sim | 31 December 2022 08:01:53 | - |
| Juiced 2: Hot Import Nights (Sep 1, 2005 prototype) | 1 September 2005 | Xbox 360 | Auto Racing Sim | 31 December 2022 08:00:05 | - |
| Juiced: Eliminator (Apr 26, 2006 prototype) | 26 April 2006 | PlayStation Portable | 24 December 2020 22:15:49 | - | |
| Jukugo - Sokubiki Jiten Yomenai Kanji mo Raku Raku Yomeru (Prototype) | Nintendo 3DS | Educational | 17 January 2024 18:42:11 | - | |
| Jump (Prototype) | Gizmondo | Action | 29 November 2016 08:48:46 | - | |
| Jumping Flash! 2 (May 27, 1996 prototype) | 27 May 1996 15:02:28 | PlayStation | Action | 17 April 2021 21:18:26 | - |
| Jungle Strike (prototype) | Sega Mega Drive | Shoot 'em up | 8 June 2022 17:21:00 | - | |
| Junker's High (Prototype B) | Sega Mega Drive | Driving | 1 January 2022 20:42:26 | - | |
| Jurassic Park (Aug 3, 1993 protoype) | 3 August 1993 16:45:33 | Sega CD | Adventure | 17 November 2016 10:10:15 | - |
| Jurassic Park (Jun 14, 1993 prototype) | 14 June 1993 17:08:28 | Sega Mega Drive | Platformer | 13 May 2016 15:55:32 | - |
| Jurassic Park (May 26, 1993 build) | 26 May 1993 10:25:54 | Sega Mega Drive | Platformer | 13 May 2016 16:13:45 | - |
| Jurassic Park (prototype) | SNES | Action | 4 January 2019 09:16:34 | - | |
| Jurassic Park - Rampage Edition (Jul 13, 1994 prototype) | 13 July 1994 18:44:56 | Sega Mega Drive | Action Platformer | 16 June 2016 15:29:48 | - |
| Jurassic Park - Rampage Edition (Jul 14, 1994 prototype) | 14 July 1994 19:19:30 | Sega Mega Drive | Action Platformer | 16 June 2016 15:29:57 | - |
| Jurassic Park - Rampage Edition (Jul 15, 1994 prototype) | 15 July 1994 20:09:02 | Sega Mega Drive | Action Platformer | 16 June 2016 15:30:03 | - |
| Jurassic Park - Rampage Edition (Jul 17, 1994 prototype) | 17 July 1994 11:50:08 | Sega Mega Drive | Action Platformer | 16 June 2016 15:30:11 | - |
| Jurassic Park - Rampage Edition (Jul 18, 1994 prototype) | 19 July 1994 05:39:36 | Sega Mega Drive | Action Platformer | 16 June 2016 15:30:19 | - |
| Jurassic Park - Rampage Edition (Jul 19, 1994 prototype) | 19 July 1994 16:24:16 | Sega Mega Drive | Action Platformer | 16 June 2016 15:30:28 | - |
| Jurassic Park - Rampage Edition (Jul 8, 1994 prototype) | 8 July 1994 17:14:28 | Sega Mega Drive | Action Platformer | 16 June 2016 15:29:42 | - |
| Jurassic Park - Rampage Edition (Jun 20, 1994 prototype) | Sega Mega Drive | Action Platformer | 16 June 2016 15:31:50 | - | |
| Jurassic Park - Rampage Edition (Jun 22, 1994 prototype) | 22 June 1994 07:48:44 | Sega Mega Drive | Action Platformer | 16 June 2016 15:31:58 | - |
| Jurassic Park - Rampage Edition (Jun 30, 1994 prototype) | 30 June 1994 10:59:56 | Sega Mega Drive | Action Platformer | 16 June 2016 15:32:05 | - |
| Just Cause (Jun 9, 2006 Prototype) | 9 June 2006 | Xbox 360 | Action-adventure, third-person shooter | 23 May 2023 01:40:32 | - |
| Just Cause 3 (Jun 24, 2015 prototype) | 24 June 2015 | PC | Action | 29 January 2024 10:47:36 | - |
| Just Dance (Demo) | Nintendo Wii | Dance, Rhythm | 11 May 2023 19:36:24 | - | |
| Just Dance 2 (Demo) | 1 January 2010 | Nintendo Wii | Dance, Rhythm | 9 February 2023 14:07:36 | - |
| Just Dance 4 (Demo) | Xbox 360 | Dance, Rhythm | 10 May 2023 15:52:15 | - | |
| Justice League Arcade (Jun 5, 2009 Prototype) | 5 June 2009 | Xbox 360 | 23 May 2023 02:13:06 | - | |
| Justice League Heroes (Sep 19, 2006 prototype) | 19 September 2006 22:52:41 | Xbox | Action | 13 June 2022 07:47:20 | - |
| Justice League Task Force (prototype) | SNES | Fighting | 10 January 2024 21:27:15 | - | |
| Justice League: Injustice for All (Prototype) | Game Boy Advance | Platform, beat-em-up | 2 October 2023 14:20:46 | - | |
| K-1 World Grand Prix (Apr 11, 2003 prototype) | 11 April 2003 12:07:38 | PlayStation 2 | Combat Sport | 20 March 2021 23:42:54 | - |
| KISS Psycho Circus: The Nightmare Child (Nov 28, 2000 prototype) | 28 November 2000 14:38:30 | Dreamcast | FPS | 10 February 2019 20:51:43 | - |
| KISS Psycho Circus: The Nightmare Child (Nov 3, 2000 prototype) | 3 November 2000 11:36:32 | Dreamcast | FPS | 10 February 2019 20:48:56 | - |
| KOF Sky Stage (Mar 24, 2010 prototype) | 24 March 2010 | Xbox 360 | Fighting | 16 August 2023 15:37:24 | - |
| KOF Sky Stage (May 17, 2010 prototype) | 17 May 2010 | Xbox 360 | Fighting | 16 August 2023 16:07:35 | - |
| KOF Sky Stage (May 21, 2010 prototype) | 21 May 2010 | Xbox 360 | Fighting | 16 August 2023 16:01:38 | - |
| KOF: Maximum Impact (Aug 17, 2004 prototype) | 17 August 2004 11:05:54 | PlayStation 2 | Fighting | 20 March 2021 23:50:09 | - |
| KOF: Maximum Impact (May 10, 2004 prototype) | 10 May 2004 15:59:53 | PlayStation 2 | Fighting | 20 March 2021 23:45:06 | - |
| KOF: Maximum Impact (Nov 1, 2004 prototype) | 1 November 2004 | PlayStation 2 | Fighting | 28 March 2023 04:57:43 | - |
| KOF: Maximum Impact - Maniax (Feb 15, 2005 prototype) | 15 February 2005 06:20:29 | Xbox | Fighting | 18 September 2021 21:32:22 | - |
| Kagero: Deception II (Apr 30, 1998 prototype) | 30 April 1998 23:52:00 | PlayStation | Strategy | 17 April 2021 21:13:57 | - |
| Kameo: Elements of Power (Apr 29, 2004 prototype) | 29 April 2004 14:31:17 | Xbox | Action | 14 February 2024 02:46:46 | ✓ |
| Kameo: Elements of Power (Aug 24, 2005 prototype) | 24 August 2005 | Xbox 360 | Action Adventure | 16 August 2023 15:36:39 | - |
| Kameo: Elements of Power (Oct 1, 2004 prototype) | 1 October 2004 | Xbox | Action | 3 August 2017 19:20:22 | ✓ |
| Kameo: Elements of Power (Oct 26, 2005 demo) | 26 October 2005 14:41:27 | Xbox 360 | Action Adventure | 19 April 2024 05:49:41 | - |
| Kane & Lynch: Dead Men (Sep 13, 2007 prototype) | 13 September 2007 | Xbox 360 | 6 June 2019 20:43:15 | - | |
| Kao the Kangaroo (Aug 28, 2000 prototype) | 28 August 2000 19:55:14 | Dreamcast | Action | 18 September 2021 19:43:43 | - |
| Kao the Kangaroo (Sep 22, 2000 prototype) | 22 September 2000 15:21:36 | Dreamcast | Action | 18 September 2021 19:41:07 | - |
| Kao the Kangaroo (Sep 25, 2000 prototype) | 25 September 2000 13:01:38 | Dreamcast | Action | 21 May 2017 04:42:57 | - |
| Karaoke Revolution (Aug 17, 2004 prototype) | 17 August 2004 23:19:47 | Xbox | Rhythm | 18 September 2021 21:35:59 | - |
| Karaoke Revolution (Aug 21, 2009 prototype) | 21 August 2009 | Nintendo Wii | Rhythm, Minigames | 25 December 2022 23:23:59 | - |
| Karaoke Revolution (Aug 28, 2009 prototype) | 28 August 2009 | Xbox 360 | Music | 25 December 2022 23:38:13 | - |
| Karaoke Revolution (Jul 18, 2003 prototype) | 18 July 2003 17:17:02 | PlayStation 2 | Rhythm | 20 March 2021 23:49:29 | - |
| Karaoke Revolution (Sep 4, 2003 prototype) | 4 September 2003 15:31:22 | PlayStation 2 | Rhythm | 20 March 2021 23:52:13 | - |
| Karaoke Revolution (Sep 8, 2004 prototype) | 8 September 2004 22:26:41 | Xbox | Rhythm | 18 September 2021 21:25:21 | - |
| Karaoke Revolution Glee (Aug 2, 2010 prototype) | 2 August 2010 | Nintendo Wii | Rhythm, Minigames | 25 December 2022 23:23:50 | - |
| Karaoke Revolution Glee (Jul 21, 2010 prototype) | 21 July 2010 | Nintendo Wii | Rhythm, Minigames | 25 December 2022 23:23:21 | - |
| Karaoke Revolution Party (Aug 13, 2005 prototype) | 13 August 2005 15:15:32 | PlayStation 2 | Rhythm | 20 March 2021 23:24:30 | - |
| Karaoke Revolution Party (Aug 25, 2005 prototype) | 25 August 2005 16:27:12 | PlayStation 2 | Rhythm | 20 March 2021 23:55:08 | - |
| Karaoke Revolution Presents: American Idol Encore 2 (Aug 23, 2008 prototype) | 23 August 2008 | Xbox 360 | Music | 25 December 2022 23:38:19 | - |
| Karaoke Revolution Presents: American Idol Encore 2 (Aug 25, 2008 prototype) | 25 August 2008 | Nintendo Wii | Rhythm, Minigames | 25 December 2022 23:24:01 | - |
| Karaoke Revolution Volume 2 (Apr 12, 2004 prototype) | 12 April 2004 19:27:30 | PlayStation 2 | Rhythm | 20 March 2021 23:36:48 | - |
| Karaoke Revolution Volume 2 (May 18, 2004 prototype) | 18 May 2004 22:57:28 | PlayStation 2 | Rhythm | 20 March 2021 23:54:35 | - |
| Karaoke Revolution Volume 3 (Aug 17, 2004 prototype) | 17 August 2004 11:47:58 | PlayStation 2 | Rhythm | 20 March 2021 23:50:56 | - |
| Kasumi Ninja (May 24, 1994 prototype) | 24 May 1994 | Atari Jaguar | Fighting | 9 May 2023 03:44:03 | - |
| Kasumi Ninja (V0.01 prototype) | Atari Jaguar | Fighting | 29 December 2017 14:45:18 | - | |
| Katakis 3D (prototype) | Game Boy Color | 3 May 2023 21:59:13 | ✓ | ||
| Katamari Damacy (Aug 6, 2004 prototype) | 6 August 2004 19:24:02 | PlayStation 2 | Action Adventure | 20 March 2021 23:31:37 | - |
| Kawasaki Superbike Challenge (Prototype) | Sega Mega Drive | Racing | 19 September 2023 15:26:04 | - | |
| Kaze no Klonoa 2: Sekai ga Nozonda Wasuremono (Feb 18, 2001 prototype) | 18 February 2001 23:58:42 | PlayStation 2 | Action-adventure | 20 March 2021 23:44:41 | - |
| Kelly Slater's Pro Surfer (Jul 14, 2002 prototype) | 14 July 2002 22:39:14 | Xbox | Sports | 18 September 2021 22:03:17 | - |
| Kelly Slater's Pro Surfer (Jul 15, 2002 prototype) | 15 July 2002 13:33:23 | PlayStation 2 | Sports - Surfing | 20 March 2021 23:26:40 | - |
| Kelly Slater's Pro Surfer (Jul 22, 2002 prototype) | 22 July 2002 01:11:08 | PlayStation 2 | Sports - Surfing | 20 March 2021 23:58:26 | - |
| Kelly Slater's Pro Surfer (Jul 30, 2002 prototype) | 30 July 2002 22:04:54 | PlayStation 2 | Sports - Surfing | 20 March 2021 23:23:28 | - |
| Kelly Slater's Pro Surfer (Jul 31, 2002 prototype) | 31 July 2002 08:59:04 | Xbox | Sports | 18 September 2021 22:00:39 | - |
| Kengo: Legacy of the Blade (Aug 1, 2002 prototype) | 1 August 2002 19:54:18 | PlayStation 2 | 3D Fighting | 20 March 2021 23:58:53 | ✓ |
| Kensei: Sacred Fist (Nov 2, 1998 prototype) | 2 November 1998 11:13:00 | PlayStation | Fighting | 26 November 2020 21:09:05 | - |
| Kenyuu Densetsu Yaiba (Nov 1993 prototype) | November 1993 | SNES | Role playing | 13 January 2019 19:05:55 | - |
| Key of Heaven (Nov 18, 2005 prototype) | 18 November 2005 | PlayStation Portable | 24 December 2020 22:16:45 | - | |
| Kick Off 3: European Challenge (Prototype) | Sega Mega Drive | Sports - Soccer | 1 January 2022 20:39:03 | - | |
| Kickman (Jan 8, 1982 prototype) | 8 January 1982 | Atari 2600 | Action | 10 May 2023 01:02:06 | ✓ |
| Kid Chameleon (Dec 19, 1991 prototype) | 19 December 1991 10:26:10 | Sega Mega Drive | Platformer | 2 May 2016 21:06:27 | - |
| Kid Klown in Crazy Chase (Prototype) | SNES | Action | 19 August 2022 12:03:01 | - | |
| Kid Paddle (Jul 8, 2005 prototype) | 8 July 2005 | Game Boy Advance | Party | 1 January 2022 20:46:40 | - |
| Kid Paddle (Jun 28, 2005 prototype) | 28 June 2005 | Game Boy Advance | Party | 1 January 2022 20:49:48 | - |
| Kid Paddle (Prototype) | Game Boy Advance | Party | 1 January 2022 20:49:08 | - | |
| Kijin Kourinden Oni (prototype) | SNES | Role-playing game | 29 December 2023 15:56:28 | - | |
| Kikansha Thomas Ni Notte (Prototype) | Sega Pico | Educational | 17 June 2016 17:28:56 | - | |
| Kikuni Masahiko no Jantoushi Dora Ou (Nov 15, 1992 prototype) | 15 November 1992 | SNES | Puzzle | 3 November 2018 17:33:31 | - |
| Kill.switch (Aug 21, 2003 15.16 prototype) | 21 August 2003 15:16:36 | PlayStation 2 | Third Person Shooter | 1 May 2024 03:07:40 | - |
| Kill.switch (Aug 21, 2003 22.14 prototype) | 21 August 2003 22:14:27 | Xbox | Third Person Shooter | 1 May 2024 03:13:44 | - |
| Kill.switch (Jun 16, 2003 prototype) | 16 June 2003 00:14:49 | PlayStation 2 | Third Person Shooter | 20 March 2021 23:54:51 | - |
| Kill.switch (May 12, 2003 prototype) | 21 August 2003 23:09:39 | Xbox | Third Person Shooter | 1 May 2024 03:15:28 | - |
| Kill.switch (May 13, 2003 prototype) | 13 May 2003 19:25:55 | Xbox | Third Person Shooter | 1 May 2024 03:19:00 | - |
| Kill.switch (Sep 7, 2003 prototype) | 7 September 2003 07:37:36 | Xbox | Third Person Shooter | 1 May 2024 03:16:52 | - |
| Killer Instinct (Aug 20, 2013 prototype) | 20 August 2013 | Xbox 360 | Fighting | 31 July 2023 01:01:33 | ✓ |
| Killer Instinct (May 17, 2013 prototype) | 17 May 2013 | Xbox 360 | Fighting | 31 July 2023 01:02:12 | ✓ |
| Killer Instinct (prototype) | SNES | Fighting | 9 November 2018 01:23:56 | - | |
| Killer Loop (Jun 21, 1999 prototype) | 21 June 1999 04:17:10 | PlayStation | Racing | 17 April 2021 21:23:38 | - |
| Killer Satellites (prototype A) | Atari 2600 | Action | 21 May 2023 04:55:58 | - | |
| Killer7 (April 27, 2005 Prototype) | 27 April 2005 | PlayStation 2 | 14 April 2024 19:01:14 | - | |
| Killer7 (Feb 22, 2005 prototype) | 22 February 2005 13:00:27 | PlayStation 2 | Action Adventure | 20 March 2021 23:43:18 | - |
| Killer7 (Jun 3, 2005 prototype) | 3 June 2005 14:28:35 | Nintendo GameCube | Action-adventure, rail shooter | 5 December 2018 17:23:10 | - |
| Killer7 (May 11, 2005 prototype) | 11 May 2005 12:36:12 | Nintendo GameCube | Action-adventure, rail shooter | 5 December 2018 23:16:47 | - |
| Killer7 (May 8, 2005 prototype) | 8 May 2005 15:59:00 | PlayStation 2 | Action Adventure | 20 March 2021 23:34:12 | - |
| Killer7 (PAL prototype) | Nintendo GameCube | Action-adventure, rail shooter | 29 January 2019 19:37:14 | - | |
| Killing Time (2.2 prototype) | 3DO | FPS | 29 November 2016 07:47:55 | - | |
| Killing Time (Apr 28, 1997 prototype) | 28 April 1997 22:36:20 | PlayStation | Adventure, First-person shooter | 12 September 2020 23:13:38 | ✓ |
| Killing Time (Aug 28, 1995 prototype) | 28 August 1995 | 3DO | FPS | 29 November 2016 07:51:30 | - |
| Killing Time (Nov 30, 1995 prototype) | 30 November 1995 14:27:36 | 3DO | FPS | 9 November 2019 15:09:53 | - |
| Killzone (Aug 19, 2004 demo) | 19 August 2004 18:07:55 | PlayStation 2 | First-person shooter | 24 February 2021 19:54:52 | - |
| Killzone (Aug 9, 2004 demo) | 9 August 2004 02:24:19 | PlayStation 2 | First-person shooter | 24 February 2021 19:59:05 | - |
| Killzone (Jul 26, 2004 prototype) | 26 July 2004 07:44:26 | PlayStation 2 | First-person shooter | 24 February 2021 19:39:05 | - |
| Killzone (Jul 27, 2004 prototype) | 27 July 2004 11:42:37 | PlayStation 2 | First-person shooter | 30 June 2019 23:24:45 | - |
| Killzone (Oct 13, 2004 prototype) | 13 October 2004 05:14:55 | PlayStation 2 | 12 February 2020 22:53:27 | - | |
| Killzone (Sep 28, 2004 prototype) | 28 September 2004 01:48:35 | PlayStation 2 | 1 August 2021 21:17:00 | - | |
| Killzone 2 (Jul 2, 2008 prototype) | 2 July 2008 | PlayStation 3 | First-person shooter | 13 January 2020 06:16:31 | - |
| Killzone 2 (Oct 23, 2008 prototype) | 23 October 2008 | PlayStation 3 | First-person shooter | 4 April 2023 02:55:35 | - |
| Killzone 2 (Unknown Multiplayer Beta EU) | PlayStation 3 | First-person shooter | 6 April 2024 15:31:03 | - | |
| Killzone 3 (Multiplayer Closed Beta EU) | PlayStation 3 | First-person shooter | 6 April 2024 12:09:17 | - | |
| Killzone 3 (Multiplayer Open Beta EU) | PlayStation 3 | First-person shooter | 6 April 2024 12:18:34 | - | |
| Killzone 3 (Nov 15, 2010 prototype) | 15 November 2010 | PlayStation 3 | First-person shooter | 13 January 2020 06:17:23 | - |
| Killzone: Liberation (Aug 21, 2006 prototype) | 21 August 2006 22:24:52 | PlayStation Portable | FPS | 1 August 2017 20:42:45 | - |
| Killzone: Liberation (Aug 22, 2006 prototype) | 22 August 2006 | PlayStation Portable | 18 August 2023 19:07:58 | - | |
| Killzone: Liberation (Jul 19, 2006 prototype) | 19 July 2006 13:30:29 | PlayStation Portable | FPS | 1 August 2017 20:44:29 | - |
| Kinect Adventures! (Mar 31, 2010 prototype) | 31 March 2010 | Xbox 360 | 29 April 2023 19:17:22 | - | |
| Kinect Horror Show (Nov 16, 2010 prototype) | 16 November 2010 16:59:05 | Xbox 360 | Horror | 25 September 2023 20:11:05 | ✓ |
| Kinect Joy Ride (Aug 23, 2010 prototype) | 23 August 2010 | Xbox 360 | Racing | 1 September 2022 16:51:54 | - |
| Kinect Karate (Feb 2, 2012 prototype) | 2 February 2012 17:34:58 | Xbox 360 | Tech Demo | 25 September 2023 20:52:35 | ✓ |
| Kinect Nat Geo TV (Aug 24, 2012 prototype) | 24 August 2012 | Xbox 360 | Edutainment | 16 August 2023 16:03:16 | - |
| Kinect Nat Geo TV (Dec 14, 2012 prototype) | 14 December 2012 | Xbox 360 | Edutainment | 16 August 2023 15:49:46 | - |
| Kinect Nat Geo TV (Feb 3, 2012 prototype) | 3 February 2012 | Xbox 360 | Edutainment | 16 August 2023 15:24:49 | - |
| Kinect Nat Geo TV (Jan 16, 2012 prototype) | 16 January 2012 | Xbox 360 | Edutainment | 16 August 2023 15:59:44 | - |
| Kinect Nat Geo TV (Jan 17, 2012 prototype) | 17 January 2012 | Xbox 360 | Edutainment | 16 August 2023 15:37:36 | - |
| Kinect Nat Geo TV (Jan 20, 2012 prototype) | 20 January 2012 17:57:33 | Xbox 360 | Edutainment | 25 September 2023 20:07:59 | - |
| Kinect Nat Geo TV (Jan 26, 2012 prototype) | 26 January 2012 | Xbox 360 | Edutainment | 16 August 2023 15:42:06 | - |
| Kinect Nat Geo TV (Jan 30, 2012 prototype) | 30 January 2012 17:48:17 | Xbox 360 | Edutainment | 25 September 2023 20:45:49 | - |
| Kinect Nat Geo TV (Mar 2, 2012 17.36 prototype) | 2 March 2012 | Xbox 360 | Edutainment | 16 August 2023 15:27:22 | - |
| Kinect Nat Geo TV (Mar 2, 2012 9.07 prototype) | 2 March 2012 | Xbox 360 | Edutainment | 16 August 2023 16:02:09 | - |
| Kinect Nat Geo TV (Nov 29, 2011 prototype) | 29 November 2011 19:15:29 | Xbox 360 | Edutainment | 25 September 2023 20:22:08 | - |
| Kinect Sesame Street TV (May 18, 2012 prototype) | 18 May 2012 14:56:53 | Xbox 360 | Edutainment | 25 September 2023 20:15:50 | - |
| Kinect Sparkler (May 10, 2011 prototype) | 10 May 2011 20:43:12 | Xbox 360 | Misc | 25 September 2023 20:41:52 | - |
| Kinect Sparkler (May 2, 2011 prototype) | 2 May 2011 09:41:55 | Xbox 360 | Misc | 25 September 2023 20:22:18 | - |
| Kinect Sparkler (May 6, 2011 prototype) | 6 May 2011 00:58:23 | Xbox 360 | Misc | 25 September 2023 21:10:36 | - |
| Kinetica (Aug 18, 2001 prototype) | 18 August 2001 13:47:02 | PlayStation 2 | Racing | 20 March 2021 23:38:42 | - |
| King Arthur (Aug 13, 2004 prototype) | 13 August 2004 17:45:26 | PlayStation 2 | Action Adventure | 20 March 2021 23:40:05 | - |
| King Arthur (Sep 1, 2004 prototype) | 1 September 2004 16:41:36 | PlayStation 2 | Action Adventure | 20 March 2021 23:46:48 | - |
| King Arthur's World (Aug 21, 1992 prototype) | 21 August 1992 | SNES | RTS | 4 August 2018 18:54:16 | - |
| King Neptune's Adventure (Prototype) | NES | Action | 11 August 2017 23:51:27 | - | |
| King Of Fighters Extreme (Dec 5, 2004 prototype) | 5 December 2004 | N-Gage | Fighting | 10 August 2017 18:40:30 | - |
| King of Clubs (Jan 28, 2008 Nintendo DS prototype) | 28 January 2008 17:16:44 | Nintendo DS | Sports - Golf | 6 February 2024 17:03:31 | ✓ |
| King of Fighters 2002 (Apr 7, 2005 prototype) | 7 April 2005 12:24:02 | PlayStation 2 | Fighting | 4 September 2020 00:15:02 | - |
| King of Fighters 2002 (Oct 19, 2004 prototype) | 19 October 2004 11:12:34 | PlayStation 2 | Fighting | 20 March 2021 23:43:38 | - |
| King of Fighters R-1 & Melon-chan no Seichou Nikki (Prototype) | Neo Geo Pocket Color | Fighting | 1 November 2016 23:29:49 | - | |
| King of Fighters R-2 (Prototype) | Neo Geo Pocket Color | Fighting | 1 November 2016 23:31:47 | - | |
| King of the Monsters 2 (prototype) | SNES | Fighting | 1 January 2020 01:38:50 | - | |
| King's Quest: Quest for the Crown (Feb 3, 1989 prototype) | 3 February 1989 | Sega Master System | Adventure | 2 April 2023 18:23:52 | - |
| King's Quest: Quest for the Crown (Prototype) | Sega Master System | Adventure | 11 March 2017 09:24:20 | - | |
| Kingdom Hearts (Jul 23, 2002 prototype) | 23 July 2002 21:16:38 | PlayStation 2 | Role Playing | 20 March 2021 23:42:04 | - |
| Kingdom Hearts (Jul 29, 2002 prototype) | 29 July 2002 | PlayStation 2 | Action, role-playing | 16 June 2020 17:14:10 | - |
| Kingdom Hearts (Jul 9, 2002 prototype) | 9 July 2002 09:40:00 | PlayStation 2 | Role Playing | 9 July 2022 20:47:55 | - |
| Kingdom Hearts HD 2.5 ReMIX (Premium Showcase) | PlayStation 3 | Action | 27 September 2023 00:40:50 | - | |
| Kingdom Hearts II (Feb 1, 2006 prototype) | 1 February 2006 10:54:46 | PlayStation 2 | Action Role-Playing | 3 May 2016 02:05:52 | - |
| Kingdom Hearts II (Feb 3, 2006 prototype) | 2 March 2006 05:36:47 | PlayStation 2 | Action role-playing | 17 October 2018 02:29:06 | - |
| Kingdom Hearts Re:Chain of Memories (Oct 01, 2008 Preview) | 1 October 2008 18:30:44 | PlayStation 2 | Role playing | 4 August 2017 03:53:45 | - |
| Kingdom II: Shadoan (Jun 11, 1996 prototype) | 11 June 1996 | Philips CD-i | FMV | 2 August 2017 18:59:11 | - |
| Kingdom Under Fire: Circle of Doom (Sep 7, 2007 prototype) | 7 September 2007 | Xbox 360 | Action RPG | 1 July 2019 00:56:46 | - |
| Kingdom Under Fire: Heroes (Jul 12, 2005 prototype) | 12 July 2005 21:06:09 | Xbox | Hack-And-Slash | 18 September 2021 21:49:17 | - |
| Kingdom Under Fire: Heroes (Jul 28, 2005 prototype) | 28 July 2005 13:08:47 | Xbox | Hack-And-Slash | 18 September 2021 21:48:19 | - |
| Kingdom Under Fire: The Crusaders (Aug 9, 2004 prototype) | 9 August 2004 21:05:27 | Xbox | Hack-And-Slash | 18 September 2021 21:56:20 | - |
| Kingdom Under Fire: The Crusaders (Jul 6, 2004 prototype) | 6 July 2004 07:41:43 | Xbox | Hack and Slash | 9 April 2020 12:33:22 | - |
| Kingdom Under Fire: The Crusaders (Mar 14, 2003 prototype) | 14 March 2003 | Xbox | Hack and Slash | 21 November 2016 09:49:48 | - |
| Kingdom of Paradise (Oct 10, 2005 prototype) | 10 October 2005 01:00:44 | PlayStation Portable | Action role-playing | 12 December 2020 22:17:18 | - |
| Kingdom: The Far Reaches (Dec 22, 1994 prototype) | 22 December 1994 | Philips CD-i | FMV | 2 August 2017 18:57:07 | - |
| Kingdoms of Amalur: Reckoning (Dec 1, 2011 prototype) | 1 December 2011 | Xbox 360 | Action Role-playing, Open World | 25 December 2022 23:38:22 | - |
| Kingdoms of Amalur: Reckoning (Dec 10, 2011 prototype) | 10 December 2011 00:00:00 | Xbox 360 | Role Playing | 25 September 2023 20:14:05 | - |
| Kingsley's Adventure (May 2, 1999 prototype) | 2 May 1999 20:38:10 | PlayStation | Platformer | 17 April 2021 21:21:28 | - |
| Kirikou and the Wild Beasts (prototype) | Nintendo DS | Platform | 4 June 2019 22:14:29 | - | |
| Klax (Atari 7800 prototype) | Atari 7800 | Puzzle | 16 May 2023 04:33:16 | ✓ | |
| Klax (Atari Lynx Prototype) | Atari Lynx | Puzzle | 8 January 2017 05:30:54 | - | |
| Klax (Jun 21, 1990 prototype) | 21 June 1990 17:41:36 | Sega Mega Drive | Puzzle | 2 May 2016 20:16:06 | - |
| Klax (NES Prototype) | NES | Puzzle | 29 August 2023 18:47:13 | - | |
| Klonoa 2: Lunatea's Veil (Jun 4, 2001 prototype) | 4 June 2001 | PlayStation 2 | Action-adventure | 12 February 2020 22:54:12 | - |
| Klonoa 2: Lunatea's Veil (May 30, 2001 prototype) | 30 May 2001 06:12:20 | PlayStation 2 | Platform | 18 April 2021 18:00:51 | - |
| Klonoa 2: Lunatea's Veil (Sep 17, 2001 prototype) | 17 September 2001 20:01:12 | PlayStation 2 | Action | 31 December 2018 02:18:49 | - |
| Klonoa: Door to Phantomile (Dec 18, 1997 prototype) | 18 December 1997 15:52:50 | PlayStation | Action Adventure | 17 April 2021 21:23:06 | - |
| Klonoa: Door to Phantomile (Jul 17, 1997 prototype) | 17 July 1997 16:22:38 | PlayStation | Action Adventure | 17 April 2021 21:14:20 | - |
| Klonoa: Door to Phantomile (Mar 9, 1998 prototype) | 9 March 1998 | PlayStation | Action Adventure | 10 May 2023 22:36:22 | - |
| Klustar (Early Prototype) | Game Boy | Action | 1 January 2022 20:43:24 | - | |
| Klustar (Oct 1, 1998 Europe Prototype) | 1 October 1998 | Game Boy Color | Puzzle | 1 January 2022 20:47:02 | - |
| Klustar (Oct 1, 1998 Japanese Prototype) | 1 October 1998 | Game Boy Color | Puzzle | 1 January 2022 20:47:29 | - |
| Knights of the Temple II (Nov 24, 2005 prototype) | 24 November 2005 17:19:21 | PlayStation 2 | Action Adventure | 20 March 2021 23:48:53 | ✓ |
| Knuckles' Chaotix (Dec 27, 1994 prototype) | 27 December 1994 09:28:48 | Sega 32X | Action Platformer | 16 June 2016 05:00:23 | - |
| Knuckles' Chaotix (Dec 29, 1994 prototype) | 30 December 1994 14:31:44 | Sega 32X | Action Platformer | 16 June 2016 05:00:30 | - |
| Knuckles' Chaotix (Dec 7, 1994 prototype) | 7 December 1994 06:15:32 | Sega 32X | Action Platformer | 16 June 2016 05:00:13 | - |
| Knuckles' Chaotix (Feb 10, 1995 prototype) | 10 February 1995 05:28:58 | Sega 32X | Action Platformer | 16 June 2016 05:00:53 | - |
| Knuckles' Chaotix (Feb 13, 1995 prototype B) | 13 February 1995 05:46:08 | Sega 32X | Action Platformer | 16 June 2016 05:08:33 | - |
| Knuckles' Chaotix (Feb 13, 1995 prototype) | 13 February 1995 06:29:24 | Sega 32X | Action Platformer | 16 June 2016 04:59:56 | - |
| Knuckles' Chaotix (Feb 14, 1995 prototype) | 14 February 1995 05:46:16 | Sega 32X | Action Platformer | 16 June 2016 05:01:10 | - |
| Knuckles' Chaotix (Feb 16, 1995 prototype) | 16 February 1995 18:06:36 | Sega 32X | Action Platformer | 16 June 2016 05:01:16 | - |
| Knuckles' Chaotix (Feb 2, 1995 prototype) | 7 February 1995 14:25:54 | Sega 32X | Action Platformer | 16 June 2016 04:59:49 | - |
| Knuckles' Chaotix (Feb 8, 1995 prototype) | 8 February 1995 10:17:48 | Sega 32X | Action Platformer | 16 June 2016 05:00:39 | - |
| Knuckles' Chaotix (Feb 9, 1995 prototype) | 9 February 1995 07:25:52 | Sega 32X | Action Platformer | 16 June 2016 05:00:47 | - |
| Knuckles' Chaotix (Jan 12, 1995 prototype) | 12 January 1995 08:36:32 | Sega 32X | Action Platformer | 16 June 2016 04:58:22 | - |
| Knuckles' Chaotix (Jan 19, 1995 prototype) | 19 January 1995 06:04:34 | Sega 32X | Action Platformer | 16 June 2016 05:00:04 | - |
| Konami International Rally Racing (May 7, 1999 prototype) | 7 May 1999 11:53:22 | PlayStation | Racing | 17 April 2021 21:18:07 | ✓ |
| Konami Krazy Racers (Prototype) | Game Boy Advance | Racing | 25 July 2023 16:07:01 | - | |
| Koudelka (Oct 16, 1999 prototype) | 16 October 1999 20:00:00 | PlayStation | Role Playing | 25 December 2016 18:20:28 | - |
| KrissX (Dec 16, 2009 prototype) | 16 December 2009 | Xbox 360 | Puzzle | 16 August 2023 15:47:54 | - |
| Kula World (Jun 3, 1998 prototype) | 3 June 1998 15:14:28 | PlayStation | Puzzle | 17 April 2021 21:23:59 | - |
| Kung Fu Chaos (Dec 14, 2002 prototype) | 14 December 2002 | Xbox | Action, Brawler | 9 December 2023 14:14:41 | - |
| Kung Fu Chaos (May 15, 2002 prototype) | 15 May 2002 18:56:50 | Xbox | Party | 6 November 2021 01:09:48 | - |
| Kung Fu Fighting (Apr 30, 2001 prototype) | 29 April 2001 17:42:46 | PlayStation 2 | Fighting | 2 December 2019 18:39:27 | ✓ |
| Kung Fu Panda (Dec 7, 2007 prototype) | 7 December 2007 20:06:24 | Nintendo Wii | Action-adventure | 24 June 2020 16:29:11 | - |
| Kung Fu Panda (Mar 13, 2008 prototype) | 13 March 2008 | Xbox 360 | 12 February 2020 22:41:13 | - | |
| Kung Fu Panda: Showdown of Legendary Legends (Trial) | PlayStation 3 | Fighting | 9 January 2024 21:56:12 | - | |
| Kung Fu Rider (2010 prototype) | 2010 | PlayStation 3 | Action | 17 November 2023 18:16:11 | - |
| Kung Fu Strike: The Warrior's Rise (Jul 22, 2009 prototype) | 22 July 2009 | Xbox 360 | Brawler | 28 October 2023 16:41:44 | - |
| Kung-Fu Master (Prototype) | Game Boy | Action | 25 May 2022 12:13:24 | - | |
| Kuon (Aug 2, 2004 prototype) | 2 August 2004 11:48:47 | PlayStation 2 | Survival | 20 March 2021 23:56:50 | - |
| Kurt Warner's Arena Football Unleashed (Mar 23, 2000 prototype) | 23 March 2000 11:55:38 | PlayStation | Sports - Football | 17 April 2021 21:23:25 | - |
| Kuru Kuru Kururin (iQue prototype) | Game Boy Advance | Puzzle | 25 March 2019 08:49:21 | - | |
| Kururin Paradise (iQue prototype) | Game Boy Advance | Puzzle | 25 March 2019 08:48:32 | - | |
| Kya: Dark Lineage (May 12, 2003 prototype) | 12 May 2003 20:56:38 | PlayStation 2 | Action Adventure | 20 March 2021 23:39:43 | - |
| Kya: Dark Lineage (Sep 29, 2003 prototype) | 29 September 2003 23:47:20 | PlayStation 2 | Action Adventure | 20 March 2021 23:53:08 | - |
| Kyle Petty's No Fear Racing (prototype) | SNES | Racing | 1 January 2020 01:19:00 | - | |
| Kyojin no Doshin (Demo) | Nintendo 64DD | Action | 26 June 2017 22:21:24 | - | |
| Kyskrew (Sep 16, 2001 prototype) | 16 September 2001 | Dreamcast | Role Playing | 6 September 2022 06:47:17 | ✓ |
| Kyuukai Douchuuki (Prototype) | Sega Mega Drive | Sports - Baseball | 26 June 2017 02:38:09 | - | |
| L.A. Rush (Aug 13, 2005 prototype) | 13 August 2005 13:17:52 | PlayStation 2 | Racing | 1 August 2017 03:43:44 | - |
| L.A. Rush (Jul 15, 2006 prototype) | 15 July 2006 | Xbox | Racing | 26 August 2018 13:41:50 | - |
| L.A. Rush (Jul 4, 2005 Prototype) | 4 July 2005 16:37:58 | Xbox | 6 April 2023 00:21:56 | - | |
| LEGO Batman 2: DC Super Heroes (Apr 19, 2012 prototype) | 19 April 2012 | Xbox 360 | Action-adventure | 13 September 2022 13:43:28 | - |
| LEGO Football (Nov 16, 1998 prototype) | 16 November 1998 11:24:34 | PC | Sports - Soccer | 26 February 2023 15:33:55 | ✓ |
| LEGO Harry Potter: Years 1-4 (May 6, 2010 prototype) | 6 May 2010 | Xbox 360 | Action-adventure, platformer | 25 December 2022 23:36:36 | - |
| LEGO Harry Potter: Years 1-4 (Prototype) | Nintendo DS | Action | 26 February 2021 15:55:53 | - | |
| LEGO Indiana Jones 2: The Adventure Continues (Aug 10, 2009 prototype) | 10 August 2009 | Nintendo Wii | Action-adventure | 25 December 2022 23:23:56 | - |
| LEGO Indiana Jones 2: The Adventure Continues (Aug 17, 2009 prototype) | 17 August 2009 | Nintendo Wii | Action-adventure | 25 December 2022 23:23:57 | - |
| LEGO Indiana Jones 2: The Adventure Continues (Dec 2, 2009 prototype) | 2 December 2009 20:00:55 | Xbox 360 | Adventure | 25 September 2023 20:15:52 | - |
| LEGO Indiana Jones 2: The Adventure Continues (Oct 6, 2009 prototype) | 6 October 2009 | Xbox 360 | Action-adventure, platformer | 25 December 2022 23:38:17 | - |
| LEGO Indiana Jones: The Original Adventures (Apr 23, 2008 prototype) | 23 April 2008 | Xbox 360 | Platform | 2 September 2022 00:58:33 | - |
| LEGO Island (July 25, 1997 prototype) | 25 July 1997 | PC | Action-Adventure | 27 November 2021 21:58:44 | - |
| LEGO Island (Jun 12, 1996 Omni demo) | 12 June 1996 10:28:00 | PC | Action-Adventure | 24 November 2023 14:18:02 | - |
| LEGO Island (Nov 1, 1996 prototype) | 1 November 1996 | PC | Action-Adventure | 2 November 2023 19:50:47 | - |
| LEGO Island 2: The Brickster's Revenge (Jan 19, 2001 prototype) | 19 January 2001 05:23:14 | PlayStation | Action | 7 February 2021 15:09:27 | - |
| LEGO Island 2: The Brickster's Revenge (Prototype) | PlayStation | Action | 8 November 2018 02:45:30 | - | |
| LEGO Racers (Oct 20, 1999 prototype) | 20 October 1999 18:30:30 | PlayStation | Racing | 17 April 2021 21:18:01 | - |
| LEGO Racers 2 (Prototype) | Game Boy Advance | 21 March 2020 18:47:58 | - | ||
| LEGO Rock Band (Sep 25, 2009 prototype) | 25 September 2009 15:26:21 | Xbox 360 | Rhythm | 25 September 2023 20:16:39 | - |
| LEGO Star Wars II: The Original Trilogy (Aug 2, 2006 prototype) | 2 August 2006 | Xbox 360 | Action-adventure, platformer | 25 December 2022 23:38:12 | - |
| LEGO Star Wars II: The Original Trilogy (Jul 24, 2006 PlayStation Portable prototype) | 24 July 2006 22:07:51 | PlayStation Portable | Action-Adventure | 10 March 2023 02:36:47 | - |
| LEGO Star Wars II: The Original Trilogy (Jul 24, 2006 prototype) | 24 July 2006 17:43:56 | Xbox | Action-Adventure | 18 September 2021 21:56:28 | - |
| LEGO Star Wars II: The Original Trilogy (Jun 13, 2006 prototype) | 13 June 2006 15:57:20 | PlayStation 2 | Action Adventure | 21 March 2021 00:29:13 | - |
| LEGO Star Wars: The Complete Saga (Prototype) | Nintendo Wii | Action-adventure | 25 December 2022 23:23:10 | - | |
| LEGO Star Wars: The Complete Saga (Sep 25, 2007 prototype) | 25 September 2007 01:14:14 | Xbox 360 | Action-adventure | 2 September 2022 16:23:41 | - |
| LEGO Star Wars: The Force Awakens (Apr 27, 2016 prototype) | 27 April 2016 15:39:19 | Nintendo 3DS | Action-adventure | 29 March 2024 03:27:48 | - |
| LEGO Star Wars: The Video Game (Jan 10, 2005 prototype) | 10 January 2005 13:30:42 | PlayStation 2 | Action Adventure | 20 March 2021 23:57:13 | - |
| LEGO Super Soccer Adventure (Feb 6, 2003 prototype) | 6 February 2003 | PlayStation 2 | Sports | 23 March 2023 05:25:21 | ✓ |
| LMK: The Lady, the Mage and the Knight (Sep 6, 1998 prototype) | 6 September 1998 | PC | RPG | 3 April 2022 12:09:37 | ✓ |
| LTDemo (Mar 4, 2004 prototype) | 4 March 2004 13:20:52 | Xbox | Racing | 26 September 2023 01:47:05 | ✓ |
| Lakers versus Celtics and the NBA Playoffs (Prototype) | Sega Mega Drive | Sports - Basketball | 1 January 2022 20:41:53 | - | |
| Lamborghini (Dec 10, 2002 prototype) | 10 December 2002 18:00:30 | Xbox | Racing | 15 May 2022 03:05:03 | ✓ |
| Lander (Feb 22, 1999 prototype) | 22 February 1999 | PC | Action | 9 October 2023 12:16:19 | - |
| Landstalker: The Treasures of King Nole (Apr 29, 1993 prototype) | Sega Mega Drive | Action-adventure | 10 March 2023 01:51:42 | - | |
| Landstalker: The Treasures of King Nole (Feb 24, 1993 prototype) | 24 February 1993 11:55:00 | Sega Mega Drive | Roleplaying | 2 February 2019 02:35:37 | - |
| Landstalker: The Treasures of King Nole (Jul 13, 1993 build) | 13 July 1993 10:26:24 | Sega Mega Drive | Roleplaying | 13 May 2016 16:13:56 | - |
| Lara Croft Tomb Raider: Anniversary (Apr 11, 2007 prototype) | 11 April 2007 | PlayStation 2 | Action Adventure | 11 August 2023 03:24:57 | - |
| Lara Croft Tomb Raider: Anniversary (Apr 6, 2007 prototype) | 6 April 2007 10:30:00 | PlayStation 2 | Adventure | 20 March 2021 23:55:30 | - |
| Lara Croft Tomb Raider: Anniversary (Apr 8, 2007 prototype) | 8 April 2007 21:40:53 | PlayStation 2 | Adventure | 20 March 2021 23:47:38 | - |
| Lara Croft Tomb Raider: Anniversary (Mar 10, 2007 prototype) | 10 March 2007 | PlayStation 2 | Action Adventure | 10 August 2023 01:17:01 | - |
| Lara Croft Tomb Raider: Anniversary (Mar 14, 2007 prototype) | 14 March 2007 13:30:00 | PlayStation 2 | Adventure | 20 March 2021 23:46:13 | - |
| Lara Croft Tomb Raider: Anniversary (May 19, 2007 prototype) | 19 May 2007 | PlayStation Portable | Action Adventure | 10 August 2023 02:56:06 | - |
| Lara Croft Tomb Raider: Anniversary (Sep 20, 2007 prototype) | 20 September 2007 | Nintendo Wii | Action | 25 December 2022 23:23:03 | - |
| Lara Croft and the Guardian of Light (Jun 25, 2010 prototype) | 25 June 2010 | Xbox 360 | Action Adventure | 16 August 2023 15:35:25 | - |
| Last Bronx (Jun 9, 1997 prototype) | 9 June 1997 20:22:57 | Sega Saturn | Fighting | 17 April 2021 20:56:33 | - |
| Lazy Raiders (Jan 7, 2010 prototype) | 7 January 2010 19:30:45 | Xbox 360 | Puzzle | 19 April 2024 05:49:41 | - |
| Le Mans 24 Hours (Aug 20, 2000 prototype) | 20 August 2000 10:46:36 | Dreamcast | Racing | 23 April 2017 22:36:41 | - |
| Le Mans 24 Hours (Sep 29, 1999 prototype) | 29 September 1999 | PC | Racing | 16 August 2023 02:46:54 | - |
| Learn and Play: Blackjack & Solitaire (Aug 9, 1994 prototype) | 9 August 1994 | Game Boy | Blackjack | 1 January 2022 20:50:33 | ✓ |
| Left 4 Dead 2 (Oct 21, 2009 Retail prototype) | 21 October 2009 18:23:20 | PC | 26 November 2023 23:55:11 | - | |
| Legacy of Kain: Defiance (Oct 11, 2003 prototype) | 11 October 2003 | PlayStation 2 | Action-adventure | 13 May 2019 08:51:04 | - |
| Legacy of Kain: Defiance (Oct 13, 2003 prototype) | 13 October 2003 00:45:54 | Xbox | Action-Adventure | 18 September 2021 21:27:32 | - |
| Legacy of Kain: Soul Reaver (Apr 14, 1999 prototype) | 13 April 1999 | PlayStation | Action | 5 March 2022 10:58:34 | - |
| Legacy of Kain: Soul Reaver (Dec 13, 1999 prototype) | 13 December 1999 12:13:22 | Dreamcast | Action | 18 September 2021 19:41:12 | - |
| Legacy of Kain: Soul Reaver (Feb 16, 1999 prototype) | 16 February 1999 | PlayStation | Action | 14 May 2020 00:20:56 | - |
| Legacy of Kain: Soul Reaver (Feb 4, 1999 prototype) | 4 February 1999 | PlayStation | Action | 14 May 2020 00:20:52 | - |
| Legacy of Kain: Soul Reaver (Jan 18, 2000 prototype) | 18 January 2000 11:06:04 | Dreamcast | Action | 18 January 2017 03:13:33 | - |
| Legacy of Kain: Soul Reaver (Jan 23, 1999 prototype) | 23 January 1999 | PlayStation | Action | 14 May 2020 00:20:56 | - |
| Legacy of Kain: Soul Reaver (Jul 14, 1999 prototype) | 14 July 1999 | PlayStation | Action | 26 March 2019 08:24:16 | - |
| Legacy of Kain: Soul Reaver (Jul 2, 1999 prototype) | 2 July 1999 | PlayStation | Action | 26 March 2019 08:18:12 | - |
| Legacy of Kain: Soul Reaver (Jun 1, 1999 prototype) | 1 June 1999 | PlayStation | Action | 26 March 2019 07:57:40 | - |
| Legacy of Kain: Soul Reaver (Jun 10, 1999 prototype) | 10 June 1999 | PlayStation | Action | 26 March 2019 08:05:22 | - |
| Legacy of Kain: Soul Reaver (Jun 18, 1999 prototype) | 18 June 1999 | PlayStation | Action | 26 March 2019 08:12:05 | - |
| Legacy of Kain: Soul Reaver (Jun 28, 1999 prototype) | 28 June 1999 11:11:20 | PlayStation | Action | 9 July 2017 23:01:55 | - |
| Legacy of Kain: Soul Reaver (May 12, 1999 prototype) | 12 May 1999 19:07:20 | PlayStation | Action | 2 August 2017 07:30:26 | - |
| Legacy of Kain: Soul Reaver 2 (Jul 17, 2001 prototype) | 17 July 2001 03:55:12 | PlayStation 2 | Action | 20 March 2021 23:43:06 | - |
| Legacy of Kain: Soul Reaver 2 (Oct 24, 2001 prototype) | 24 October 2001 07:24:17 | PlayStation 2 | Action | 8 August 2023 16:05:37 | - |
| Legaia 2: Duel Saga (Aug 13, 2002 prototype) | 13 August 2002 17:20:28 | PlayStation 2 | Role playing | 20 March 2021 23:55:59 | - |
| Legaia 2: Duel Saga (May 16, 2002 prototype) | 16 May 2002 18:25:42 | PlayStation 2 | Role playing | 20 March 2021 23:37:41 | - |
| Legend of Illusion Starring Mickey Mouse (Oct 11, 1994 prototype) | 11 October 1994 19:10:58 | Game Gear | Action Platformer | 16 June 2016 07:17:56 | - |
| Legend of Illusion Starring Mickey Mouse (Oct 14, 1994 prototype) | 14 October 1994 18:32:46 | Game Gear | Action Platformer | 16 June 2016 07:18:03 | - |
| Legend of Illusion Starring Mickey Mouse (Oct 17, 1994 prototype) | 17 October 1994 17:03:46 | Game Gear | Action Platformer | 16 June 2016 07:18:10 | - |
| Legend of Illusion Starring Mickey Mouse (Sep 22, 1994 prototype) | 22 September 1994 11:35:24 | Game Gear | Action Platformer | 16 June 2016 07:18:19 | - |
| Legend of Illusion Starring Mickey Mouse (Sep 30, 1994 prototype SEL) | 30 September 1994 16:21:02 | Game Gear | Action Platformer | 16 June 2016 07:18:25 | - |
| Legend of Illusion Starring Mickey Mouse (Sep 30, 1994 prototype) | 30 September 1994 16:20:16 | Game Gear | Action Platformer | 16 June 2016 07:18:32 | - |
| Legend of Legaia (Nov 16, 1998 prototype) | 16 November 1998 | PlayStation | 13 May 2019 07:58:02 | - | |
| Legend of Mana (Nov 5, 1999 prototype) | 5 November 1999 12:13:00 | PlayStation | Role Playing | 17 April 2021 21:23:16 | - |
| Legend of the Guardians: The Owls of Ga'Hoole (Jun 2, 2010 prototype) | 2 June 2010 | Xbox 360 | Combat flight simulation game | 25 December 2022 23:38:00 | - |
| Legendary (Aug 17, 2008 prototype) | 17 August 2008 00:00:00 | Xbox 360 | First Person Shooter | 25 September 2023 20:03:15 | - |
| Legends of Might and Magic (Apr 18, 2001 demo) | 18 April 2001 | PC | Shooter | 16 October 2022 12:00:42 | - |
| Legends of Wrestling (Nov 26, 2001 prototype) | 26 November 2001 09:56:10 | PlayStation 2 | Sports - Wrestling | 20 March 2021 23:49:59 | - |
| Legends of Wrestling II (Nov 21, 2002 prototype) | 21 November 2002 17:24:42 | PlayStation 2 | Sports - Wrestling | 20 March 2021 23:43:35 | - |
| Legends of Wrestling II (Nov 7, 2002 prototype) | 7 November 2002 16:18:56 | PlayStation 2 | Sports - Wrestling | 20 March 2021 23:51:49 | - |
| Legends of Wrestling II (Oct 30, 2002 prototype) | 30 October 2002 16:16:02 | PlayStation 2 | Sports - Wrestling | 20 March 2021 23:28:24 | - |
| Legends of Wrestling II (Oct 4, 2002 23.41 prototype) | 4 October 2002 23:41:13 | Xbox | Wrestling | 18 September 2021 21:36:46 | - |
| Legends of Wrestling II (Oct 4, 2002 prototype) | 4 October 2002 17:24:50 | PlayStation 2 | Sports - Wrestling | 20 March 2021 23:45:10 | - |
| Lego Stunt Rally (Jun 2, 2000 prototype) | 2 June 2000 18:21:50 | PlayStation | Racing | 16 July 2020 21:00:52 | ✓ |
| Leisure Suit Larry: Magna Cum Laude (Jul 31, 2004 prototype) | 31 July 2004 15:58:08 | Xbox | Adventure | 12 March 2020 21:01:16 | - |
| Leisure Suit Larry: Magna Cum Laude (Jun 23, 2004 prototype) | 23 June 2004 23:33:13 | PlayStation 2 | Adventure | 20 March 2021 23:58:50 | - |
| Leisure Suit Larry: Magna Cum Laude (Jun 25, 2004 prototype) | 25 June 2004 19:00:00 | Xbox | Adventure | 18 September 2021 21:57:16 | - |
| Leisure Suit Larry: Magna Cum Laude (Jun 3, 2004 prototype) | 3 June 2004 14:50:16 | Xbox | Adventure | 4 April 2021 03:24:12 | - |
| Lemmings (Aug 8, 2006 prototype) | 8 August 2006 | PlayStation 2 | Puzzle | 7 December 2020 19:07:03 | - |
| Lemmings (Dec 8, 2005 prototype) | 8 December 2005 | PlayStation Portable | Puzzle | 14 October 2019 12:40:01 | - |
| Lemmings (Jan 18, 2006 prototype) | 18 January 2006 15:20:49 | PlayStation Portable | Puzzle | 14 October 2019 12:35:32 | - |
| Lemmings (May 19, 1993 prototype) | 19 May 1993 | Game Boy | Puzzle | 3 January 2018 06:20:27 | - |
| Lemmings (Sep 30, 2005 prototype) | 30 September 2005 10:14:15 | PlayStation Portable | Puzzle | 1 August 2017 22:31:39 | - |
| Lemmings 2: The Tribes (Game Gear Prototype) | Game Gear | Puzzle | 11 March 2017 09:26:39 | ✓ | |
| Lemmings 2: The Tribes (Sega Master System Prototype) | Sega Master System | Puzzle | 11 March 2017 09:27:36 | ✓ | |
| Les Guignols de l'info (May 22, 1996 prototype) | 22 May 1996 | Philips CD-i | FMV | 2 August 2017 19:00:47 | - |
| Les Maîtres de la peinture hollandaise au 17ème siècle (Apr 9, 1993 prototype) | 9 April 1993 | Philips CD-i | FMV | 2 August 2017 19:02:06 | - |
| Let's Tap (Mar 3, 2009 prototype) | 3 March 2009 | Nintendo Wii | Rhythm, Minigames | 25 December 2022 23:23:58 | - |
| Lethal Enforcers (Aug 13, 1993 prototype) | 13 August 1993 | Sega Mega Drive | Shooter | 17 November 2016 04:12:18 | - |
| Lethal Enforcers I & II (Jan 31, 1997 prototype) | 31 January 1997 05:46:52 | PlayStation | Compilation | 17 April 2021 21:20:05 | - |
| Lethal Skies II (Jun 7, 2003 prototype) | 7 June 2003 14:49:00 | PlayStation 2 | Flight Simulation | 20 March 2021 23:40:09 | - |
| Lethal Skies: Elite Pilot - Team SW (Feb 4, 2002 prototype) | 4 February 2002 13:59:41 | PlayStation 2 | Flight - Combat | 20 March 2021 23:56:46 | - |
| Lethal Weapon (Prototype) | Game Boy | Action | 1 January 2022 23:52:22 | - | |
| Lethal Weapon 3 (Prototype) | Sega Master System | Action | 11 March 2017 09:29:14 | ✓ | |
| Liath: WorldSpiral (Jul 6, 1998 prototype) | 6 July 1998 | PC | Adventure | 15 August 2023 04:00:41 | - |
| Libero Grande (Aug 21, 1998 prototype) | 21 August 1998 01:00:00 | PlayStation | Arcade Soccer | 10 March 2020 07:43:36 | - |
| Libero Grande International (Jan 4, 2001 prototype) | 4 January 2001 12:00:00 | PlayStation | Sports - Soccer | 13 June 2021 15:21:26 | - |
| Lichdom: Battlemage (Jun 28, 2011 prototype) | 28 June 2011 05:31:07 | Xbox 360 | Action | 25 September 2023 20:08:01 | ✓ |
| Life Is Strange (Jun 27, 2014 prototype) | 27 June 2014 15:44:07 | PlayStation 3 | Adventure | 10 April 2023 17:25:04 | - |
| Light Crusader (Jul 10, 1995 prototype) | 4 July 1995 13:52:56 | Sega Mega Drive | Role-Playing | 16 June 2016 15:37:31 | - |
| Light Crusader (Jun 8, 1995 prototype) | 7 June 1995 11:45:26 | Sega Mega Drive | Role-Playing | 16 June 2016 15:37:41 | - |
| Light Crusader (Mar 28, 1995 Prototype) | Sega Mega Drive | 10 March 2023 01:35:44 | - | ||
| Lightning Gunner (Apr 14, 1997 prototype) | Sega Saturn | Shooter | 17 August 2017 19:02:52 | ✓ | |
| Line Rider 2: Unbound (Aug 5, 2008 prototype) | 5 August 2008 | Nintendo Wii | Action | 25 December 2022 23:23:19 | - |
| Lingo (Dec 16, 1994 prototype) | 16 December 1994 | Philips CD-i | FMV | 2 August 2017 19:03:33 | - |
| Lingo (Mar 7, 1995 prototype) | 7 March 1995 | Philips CD-i | FMV | 2 August 2017 19:04:45 | - |
| Links 2004 (Sep 12, 2003 prototype) | 12 September 2003 17:13:54 | Xbox | Sports | 18 September 2021 21:43:02 | - |
| Linux for PlayStation 2 (Apr 19, 2001 prototype) | 19 April 2001 | PlayStation 2 | 26 February 2024 21:42:08 | - | |
| Lion King Adventure at Pride Rock (Apr 19, 1995 prototype) | 19 April 1995 13:53:26 | Sega Pico | Educational | 16 June 2016 05:26:41 | - |
| Lion King Adventure at Pride Rock (Apr 25, 1995 prototype) | 26 April 1995 14:56:00 | Sega Pico | Educational | 16 June 2016 05:26:48 | - |
| Lion King Adventure at Pride Rock (Jun 15, 1995 prototype) | 15 June 1995 15:54:20 | Sega Pico | Educational | 16 June 2016 05:29:49 | - |
| Lion King Adventure at Pride Rock (Jun 16, 1995 prototype) | 16 June 1995 19:01:30 | Sega Pico | Educational | 16 June 2016 05:29:56 | - |
| Lion King Adventure at Pride Rock (May 1, 1995 prototype) | 2 May 1995 09:03:34 | Sega Pico | Educational | 16 June 2016 05:30:03 | - |
| Lion King Adventure at Pride Rock (May 16, 1995 prototype) | 16 May 1995 20:08:20 | Sega Pico | Educational | 16 June 2016 05:31:04 | - |
| Lion King Adventure at Pride Rock (May 17, 1995 prototype) | 17 May 1995 12:10:48 | Sega Pico | Educational | 16 June 2016 05:31:12 | - |
| Lion King Adventure at Pride Rock (May 22, 1995 prototype) | 25 May 1995 15:33:04 | Sega Pico | Educational | 16 June 2016 05:31:19 | - |
| Little Big Adventure (Jan 27, 1997 prototype) | 27 January 1997 14:00:52 | PlayStation | Action-adventure | 12 September 2020 23:13:44 | - |
| Little King's Story (Aug 8, 2009 prototype) | 8 August 2009 | Nintendo Wii | Real-time strategy, life simulation, role-playing | 25 December 2022 23:23:48 | - |
| Little King's Story (Feb 3, 2009 prototype) | 3 February 2009 | Nintendo Wii | Real-time strategy, life simulation, role-playing | 25 December 2022 23:23:28 | - |
| Little King's Story (Mar 17, 2009 prototype) | 17 March 2009 | Nintendo Wii | Real-time strategy, life simulation, role-playing | 25 December 2022 23:24:15 | - |
| Little King's Story (Prototype) | Nintendo Wii | Real-time strategy, life simulation, role-playing | 25 December 2022 23:23:54 | - | |
| Little Magic (Japan Prototype) | SNES | Action | 7 December 2016 22:13:00 | - | |
| Little Magic (PAL Prototype) | SNES | Action | 7 December 2016 22:07:14 | ✓ | |
| Little Master: Nijiiro no Maseki (prototype) | SNES | Turn-Based Tactics | 17 April 2022 20:29:10 | - | |
| LittleBigPlanet (Aug 28, 2008 prototype) | 28 August 2008 | PlayStation 3 | Platform | 31 January 2023 13:13:18 | - |
| LittleBigPlanet (Jun 29, 2009 prototype) | 29 June 2009 | PlayStation Portable | Puzzle-platformer | 27 November 2020 13:50:14 | - |
| LittleBigPlanet (May 19, 2010 debug build) | 19 May 2010 | PlayStation 3 | Platform | 4 June 2021 03:38:50 | - |
| LittleBigPlanet (Sep 17, 2009 prototype) | 17 September 2009 | PlayStation 3 | Platform | 4 June 2021 20:43:47 | - |
| LittleBigPlanet 2 (Apr 19, 2010 prototype) | 19 April 2010 13:19:25 | PlayStation 3 | Puzzle-platformer | 14 May 2024 15:17:07 | - |
| LittleBigPlanet 2 (Apr 29, 2013 debug build) | 29 April 2013 | PlayStation 3 | Puzzle-platformer | 21 April 2018 04:13:41 | - |
| LittleBigPlanet 2 (April 2010 prototype) | PlayStation 3 | Puzzle-platformer | 14 May 2024 15:16:57 | - | |
| LittleBigPlanet 2 (Aug 30, 2010 prototype) | 30 August 2010 21:44:55 | PlayStation 3 | Puzzle-platformer | 5 April 2024 22:38:45 | - |
| LittleBigPlanet 2 (Mar 7, 2011 prototype) | 7 March 2011 12:11:00 | PlayStation 3 | Platformer | 26 February 2024 15:40:36 | - |
| LittleBigPlanet 2 (May 31, 2011 prototype) | 31 May 2011 17:56:34 | PlayStation 3 | Puzzle-platformer | 5 April 2024 19:10:26 | - |
| LittleBigPlanet 2 (May 5, 2010 prototype) | 5 May 2010 15:56:14 | PlayStation 3 | Puzzle-platformer | 11 February 2023 18:16:54 | - |
| LittleBigPlanet 2 (Nov 18, 2010 prototype) | 18 November 2010 | PlayStation 3 | Puzzle-platformer | 11 February 2023 18:25:28 | - |
| LittleBigPlanet 2 (Nov 30, 2010 prototype) | 30 November 2010 | PlayStation 3 | Puzzle-platformer | 11 February 2023 18:43:52 | - |
| LittleBigPlanet 2 (Oct 1, 2013 debug build) | 1 October 2013 | PlayStation 3 | Puzzle-platformer | 29 April 2023 23:36:52 | - |
| LittleBigPlanet 2 (Sep 28, 2010 prototype) | 28 September 2010 12:56:45 | PlayStation 3 | Puzzle-platformer | 5 April 2024 22:42:28 | - |
| LittleBigPlanet 3 (Apr 13, 2015 debug build) | 13 April 2015 | PlayStation 3 | Puzzle-platformer | 18 April 2023 06:44:52 | - |
| LittleBigPlanet 3 (Aug 28, 2014 prototype) | 28 August 2014 16:24:11 | PlayStation 3 | Puzzle-platformer | 18 April 2023 06:36:34 | - |
| LittleBigPlanet 3 (Aug 6, 2014 PS4 prototype) | 6 August 2014 15:55:51 | PlayStation 4 | Platformer | 13 February 2024 11:53:52 | - |
| LittleBigPlanet 3 (Aug 6, 2014 prototype) | 6 August 2014 15:19:07 | PlayStation 3 | Platformer | 18 April 2023 06:24:58 | - |
| LittleBigPlanet 3 (Jun 23, 2014 prototype) | 23 June 2014 | PlayStation 3 | Puzzle-platformer | 14 April 2023 22:38:25 | - |
| LittleBigPlanet 3 (Mar 31, 2014 prototype) | 31 March 2014 18:40:17 | PlayStation 3 | Puzzle-platformer | 13 March 2023 01:15:11 | - |
| LittleBigPlanet 3 (May 1, 2014 prototype) | 1 May 2014 | PlayStation 3 | Puzzle-platformer | 15 April 2023 07:09:01 | - |
| LittleBigPlanet 3 (Sep 2, 2014 prototype) | 2 September 2014 | PlayStation 4 | Platformer | 13 February 2024 11:58:04 | - |
| LittleBigPlanet 3 (Sep 24, 2014 prototype) | 24 September 2014 05:24:32 | PlayStation 3 | Puzzle-platformer | 11 February 2023 18:54:06 | - |
| LittleBigPlanet 3 (Sep 7, 2013 prototype) | 7 September 2013 | PlayStation 3 | Puzzle-platformer | 5 May 2018 20:38:53 | - |
| LittleBigPlanet HUB (Dec 10, 2013 prototype) | 10 December 2013 20:58:25 | PlayStation 3 | Puzzle-platform | 25 February 2024 18:30:58 | ✓ |
| LittleBigPlanet Karting (Aug 1, 2012 prototype) | 1 August 2012 11:10:12 | PlayStation 3 | Racing | 1 July 2019 00:14:06 | - |
| LittleBigPlanet Karting (Aug 15, 2011 prototype) | 15 August 2011 11:47:07 | PlayStation 3 | Racing | 11 January 2024 13:16:15 | - |
| LittleBigPlanet Karting (USA Public Beta) | 30 June 2012 21:29:36 | PlayStation 3 | Racing | 3 February 2024 21:27:58 | - |
| LittleBigPlanet PS Vita (Jul 31, 2012 prototype) | 31 July 2012 | PlayStation Vita | Adventure, Platformer | 16 December 2023 23:01:04 | - |
| LittleBigPlanet PS Vita (May 2012 Beta) | 15 May 2012 | PlayStation Vita | Adventure, Platformer | 27 December 2023 16:49:51 | - |
| Loaded (Sep 3, 1996 prototype) | 25 June 1996 22:46:31 | Sega Saturn | Shooter | 5 June 2016 03:52:22 | - |
| Loadout (May 23, 2012 prototype) | 23 May 2012 | Xbox 360 | Action | 16 August 2023 15:34:46 | ✓ |
| Loadstar: The Legend of Tully Bodine (Oct 13, 1994 prototype) | 13 October 1994 16:59:21 | Sega CD | Shooting | 18 November 2016 09:48:46 | - |
| Lobo (April Prototype) | Sega Mega Drive | Action | 1 January 2022 20:49:42 | ✓ | |
| Lobo (Prototype - SNES) | SNES | Fighting | 20 November 2016 01:49:50 | ✓ | |
| Lobo prototype | Sega Mega Drive | Fighter (2D) | 2 May 2016 18:52:44 | ✓ | |
| Lock On: Modern Air Combat (Aug 28, 2003 prototype) | 28 August 2003 17:52:00 | PC | Flight Simulator | 3 March 2024 09:47:30 | - |
| Lock's Quest (REV1852 prototype) | Nintendo DS | Real-time strategy, Tower defense | 18 June 2018 19:35:37 | - | |
| Lock's Quest (REV2751 prototype) | Nintendo DS | Real-time strategy, Tower defense | 21 November 2023 15:46:04 | - | |
| LocoRoco (Apr 20, 2006 prototype) | 20 April 2006 17:36:55 | PlayStation Portable | Action | 2 August 2017 03:11:14 | - |
| LocoRoco 2 (Sep 5, 2008 prototype) | 5 September 2008 19:33:56 | PlayStation Portable | Action | 2 August 2017 15:27:13 | - |
| Lode Runner (Feb 24, 2009 prototype) | 24 February 2009 | Xbox 360 | Puzzle, Platformer | 28 October 2023 17:36:38 | - |
| Logos Panic GO.A.I.SA.TU. (Satellaview) | Satellaview | Puzzle | 10 January 2017 07:26:45 | - | |
| London 2012: The Official Video Game of the Olympic Games (Mar 22, 2012 prototype) | 22 March 2012 03:07:51 | Xbox 360 | Sports | 25 September 2023 20:07:43 | - |
| Looney Tunes Collector: Martian Alert! (Oct 28, 1999 prototype) | 28 October 1999 | Game Boy Color | RPG | 18 July 2021 13:17:57 | - |
| Looney Tunes Collector: Martian Alert! (Prototype) | Game Boy Color | Action | 1 January 2022 20:39:59 | - | |
| Looney Tunes: Acme Arsenal (Jul 31, 2007 prototype) | 31 July 2007 | Xbox 360 | Action-adventure | 25 December 2022 23:37:03 | - |
| Looney Tunes: Acme Arsenal (Jun 20, 2007 prototype) | 20 June 2007 | Xbox 360 | Action-adventure | 25 December 2022 23:36:41 | - |
| Looney Tunes: Duck Amuck (Feb 1, 2007 prototype) | 1 February 2007 08:13:46 | Nintendo DS | 19 January 2024 20:51:20 | - | |
| Looney Tunes: Duck Amuck (Oct 4, 2006 prototype) | 4 October 2006 16:35:56 | Nintendo DS | 19 January 2024 20:49:49 | - | |
| Looney Tunes: Space Race (Jul 31, 2000 prototype) | 31 July 2000 12:27:04 | Dreamcast | Racing | 21 May 2017 06:17:33 | - |
| Loons: The Fight for Fame (Sep 17, 2002 prototype) | 17 September 2002 | Xbox | Fighting | 9 December 2023 14:20:19 | - |
| Loopz (Prototype) | Game Boy | Action | 1 January 2022 20:40:11 | - | |
| Lord of the Rings: The Fellowship of the Ring (Aug 9, 2002 prototype) | 9 August 2002 22:02:10 | PlayStation 2 | Adventure | 20 March 2021 23:40:46 | - |
| Lord of the Rings: The Fellowship of the Ring (Jul 11, 2002 prototype) | 11 July 2002 06:08:00 | PlayStation 2 | Adventure | 20 March 2021 23:42:35 | - |
| Lord of the Rings: The Fellowship of the Ring (Jul 18, 2002 prototype) | 18 July 2002 05:03:15 | PlayStation 2 | Adventure | 20 March 2021 23:44:16 | - |
| Lord of the Rings: The Fellowship of the Ring (Sep 1, 2002 prototype) | 1 September 2002 18:00:42 | PlayStation 2 | Adventure | 20 March 2021 23:47:29 | - |
| Lost Boys Interactive (Prototype) | Philips CD-i | FMV | 2 August 2017 19:58:16 | - | |
| Lost Cities (Jan 4, 2008 prototype) | 4 January 2008 | Xbox 360 | Board Game | 16 August 2023 15:36:18 | - |
| Lost Kingdoms (Mar 4, 2002) | 4 March 2002 | Nintendo GameCube | Role playing | 1 May 2019 22:48:22 | - |
| Lost Odyssey (Dec 13. 2007) | 13 December 2007 | Xbox 360 | Role Playing | 28 April 2024 17:31:08 | - |
| Lost Odyssey (Jul 18, 2006 prototype) | 18 July 2006 05:39:31 | Xbox 360 | Role Playing | 25 September 2023 20:08:16 | - |
| Lost Odyssey (Nov 17, 2007 prototype) | 17 November 2007 08:24:11 | Xbox 360 | Role Playing | 24 December 2023 23:37:01 | - |
| Lost Planet 2 (Dec 10, 2009 Prototype) | 10 December 2009 | Xbox 360 | Third Person Shooter | 23 May 2023 03:07:19 | - |
| Lost Planet 2 (Dec 16, 2009 prototype) | 10 December 2009 | Xbox 360 | Third-person shooter | 20 September 2019 15:51:00 | - |
| Lost Planet 2 (Jan 27, 2010 prototype) | 27 January 2010 | Xbox 360 | Third-person shooter | 1 July 2019 01:12:22 | - |
| Lost Planet 2 (Jun 16, 2009 prototype) | 16 June 2009 07:57:17 | Xbox 360 | Action | 25 September 2023 21:19:48 | - |
| Lost Planet: Colonies (Jan 30, 2008 Prototype) | 30 January 2008 | Xbox 360 | 23 May 2023 04:27:01 | - | |
| Lost Planet: Colonies (Mar 10, 2008 prototype) | 10 March 2008 | Xbox 360 | 1 July 2019 01:14:45 | - | |
| Lost Planet: Extreme Condition Colonies Edition (Mar 28, 2008 prototype) | 28 March 2008 | Xbox 360 | Third-person Shooter, Expansion | 25 December 2022 23:37:53 | - |
| Lotus Challenge (Jun 7, 2001 prototype) | 7 June 2001 23:25:28 | PlayStation 2 | Racing | 8 August 2023 16:41:25 | - |
| Lotus II: RECS (Prototype) | Sega Mega Drive | Action | 2 February 2019 02:27:36 | - | |
| Loving for a Lifetime (Mar 7, 1995 prototype) | 7 March 1995 | Philips CD-i | FMV | 2 August 2017 19:06:53 | - |
| Lucha Libre AAA Heroes del Ring (Jul 29, 2010 prototype) | 29 July 2010 01:12:21 | Xbox 360 | Fighting | 25 September 2023 21:04:29 | - |
| Lucky Luke (Prototype) | SNES | Action | 30 January 2020 01:43:59 | - | |
| Lucky Luke: Desperado Train (Prototype) | Game Boy Color | Platformer | 1 January 2022 20:39:32 | - | |
| Lucky Luke: The Video Game (Jun 21, 1996 prototype) | 21 June 1996 | Philips CD-i | FMV | 2 August 2017 19:08:23 | - |
| Lufia & the Fortress of Doom (Tech demo) | Sega Mega Drive | Role Playing | 17 November 2016 04:18:26 | ✓ | |
| Lumines Live! (Dec 11, 2006 prototype) | 11 December 2006 14:10:57 | Xbox 360 | Puzzle | 16 August 2023 15:42:13 | - |
| Lumines Live! (Oct 6, 2006 prototype) | 6 October 2006 | Xbox 360 | Puzzle, Music/Rhythm | 28 October 2023 17:23:30 | - |
| Lunacy (Jan 11, 1997 prototype) | 11 January 1997 16:46:46 | Sega Saturn | Adventure | 17 April 2021 20:53:02 | - |
| Lunar: Silver Star Story (Oct 13, 1998 prototype) | 13 October 1998 14:26:26 | PlayStation | Role Playing | 17 April 2021 21:23:09 | - |
| Lunatik (Jun 17, 1997 prototype) | 17 June 1997 | PlayStation | 7 September 2022 17:13:06 | ✓ | |
| Lupin the 3rd: Treasure of the Sorcerer King (Oct 31, 2003 prototype) | 31 October 2003 13:44:06 | PlayStation 2 | Action | 20 March 2021 23:35:48 | - |
| Lupin the 3rd: Treasure of the Sorcerer King (Oct 9, 2003 prototype) | 9 October 2003 15:31:14 | PlayStation 2 | Action | 20 March 2021 23:59:26 | - |
| Luxor 2 (Feb 28, 2007 prototype) | 28 February 2007 | Xbox 360 | Action, Puzzle | 29 October 2023 11:25:32 | - |
| M.C. Kids (Prototype) | 1992 | NES | 21 March 2020 14:46:16 | - | |
| MDK (Sep 23, 1997 prototype) | 23 September 1997 20:43:42 | PlayStation | Action | 17 April 2021 21:20:25 | - |
| MDK2 (Jan 26, 2000 17:51 prototype) | 26 January 2000 17:51:18 | Dreamcast | Action | 10 January 2017 02:56:42 | - |
| MDK2 (Jan 26, 2000 19:14 prototype) | 26 January 2000 19:14:56 | Dreamcast | Action | 20 May 2017 19:53:38 | - |
| MDK2 (Mar 5, 2000 prototype) | 5 March 2000 20:59:32 | Dreamcast | Action | 24 March 2019 21:34:11 | - |
| MDK2 (Nov 30, 1999 prototype) | 30 November 1999 | Dreamcast | Action | 17 August 2019 15:49:26 | - |
| MDK2: Armageddon (Feb 1, 2001 prototype) | 1 February 2001 18:45:30 | PlayStation 2 | Action | 20 March 2021 23:56:05 | - |
| MLB 06: The Show (Dec 1, 2005 prototype) | 1 December 2005 17:45:47 | PlayStation 2 | Sports - Baseball | 20 March 2021 23:59:37 | - |
| MLB 06: The Show (Jan 24, 2006 prototype) | 24 January 2006 11:51:44 | PlayStation 2 | Sports - Baseball | 20 March 2021 23:46:08 | - |
| MLB 08: The Show (Feb 14, 2008 prototype) | 14 February 2008 11:44:25 | PlayStation 2 | Sports - Baseball | 20 March 2021 23:40:39 | - |
| MLB 08: The Show (Feb 15, 2008 prototype) | 15 February 2008 | PlayStation 3 | Sports - Baseball | 31 January 2023 13:21:38 | - |
| MLB 08: The Show (Jan 9, 2008 prototype) | 9 January 2008 11:55:01 | PlayStation 2 | Sports - Baseball | 20 March 2021 23:44:08 | - |
| MLB 2004 (Dec 17, 2002 prototype) | 17 December 2002 01:09:10 | PlayStation 2 | Sports - Baseball | 20 March 2021 23:46:44 | - |
| MLB 2004 (Jan 6, 2003 prototype) | 6 January 2003 18:23:21 | PlayStation 2 | Sports - Baseball | 24 January 2018 05:10:11 | - |
| MLB Pennant Race (Jun 5, 1996 prototype) | 5 June 1996 01:37:50 | PlayStation | Sports - Baseball | 17 April 2021 21:22:47 | - |
| MLB SlugFest 2003 (Jul 25, 2002 prototype) | 25 July 2002 00:27:38 | Xbox | Sports | 18 September 2021 21:27:46 | - |
| MLB SlugFest 2004 (Feb 3, 2003 prototype) | 3 February 2003 00:59:29 | Xbox | Sports | 18 September 2021 21:57:01 | - |
| MLB SlugFest 2004 (Jan 16, 2003 prototype) | 16 January 2003 22:36:32 | Xbox | Sports | 18 September 2021 21:29:21 | - |
| MLB SlugFest 2004 (Jan 28, 2003 prototype) | 28 January 2003 11:16:13 | PlayStation 2 | Sports - Baseball | 20 March 2021 23:24:41 | - |
| MLB SlugFest 2004 (Jan 8, 2003 prototype) | 8 January 2003 18:02:47 | PlayStation 2 | Sports - Baseball | 20 March 2021 23:43:05 | - |
| MLB SlugFest 2006 (Mar 6, 2006 22.37 prototype) | 6 March 2006 22:37:47 | Xbox | Sports | 18 September 2021 22:01:17 | - |
| MLB SlugFest 2006 (Mar 6, 2006 prototype) | 6 March 2006 14:36:05 | PlayStation 2 | Sports - Baseball | 20 March 2021 23:30:38 | - |
| MLB SlugFest: Loaded (Apr 5, 2004 prototype) | 5 April 2004 18:36:54 | PlayStation 2 | Sports - Baseball | 20 March 2021 23:40:10 | - |
| MLB SlugFest: Loaded (Apr 8, 2004 prototype) | 8 April 2004 02:58:17 | Xbox | Sports | 18 September 2021 21:35:44 | - |
| MLB SlugFest: Loaded (Feb 27, 2004 prototype) | 27 February 2004 06:51:44 | Xbox | Sports | 18 September 2021 21:50:29 | - |
| MLB Stickball (Aug 26, 2008 prototype) | 26 August 2008 | Xbox 360 | Sports, Baseball | 29 October 2023 11:33:17 | - |
| MPEG Video Sampler Volume 1 (Feb 19, 1994 prototype) | 19 February 1994 15:18:24 | Philips CD-i | Sample | 17 April 2021 20:55:01 | ✓ |
| MS Saga: A New Dawn (Apr 20, 2005 prototype) | 20 April 2005 10:08:33 | PlayStation 2 | Role Playing | 20 March 2021 23:35:55 | - |
| MS Saga: A New Dawn (Nov 29, 2005 prototype) | 29 November 2005 12:41:12 | PlayStation 2 | Role Playing | 20 March 2021 23:55:22 | - |
| MS Saga: A New Dawn (Nov 4, 2005 prototype) | 4 November 2005 14:41:14 | PlayStation 2 | Role Playing | 20 March 2021 23:53:24 | - |
| MSR: Metropolis Street Racer (May 9, 2000 prototype) | 9 May 2000 16:06:32 | Dreamcast | Racing | 15 May 2017 21:10:11 | - |
| MSR: Metropolis Street Racer (Nov 10, 1999 prototype) | 10 November 1999 16:13:32 | Dreamcast | Racing | 7 June 2019 23:42:11 | - |
| MSR: Metropolis Street Racer (Oct 10, 2000 prototype) | 10 October 2000 07:02:32 | Dreamcast | Racing | 1 April 2019 03:24:31 | - |
| MTV Music Generator 3: This Is the Remix (Mar 5, 2004 prototype) | 5 March 2004 09:59:00 | PlayStation 2 | Rhythm | 20 March 2021 23:53:45 | - |
| MTV Sports: Skateboarding featuring Andy Macdonald (May 25, 2000 prototype) | 25 May 2000 14:16:56 | PlayStation | Sports - Skateboarding | 17 April 2021 21:24:20 | - |
| MTV Sports: Snowboarding (Aug 26, 1999 prototype) | 26 August 1999 20:35:14 | PlayStation | Sports - Snowboarding | 17 April 2021 21:24:17 | - |
| MTV Sports: Snowboarding (Sep 17, 1999 prototype) | 17 September 1999 16:23:04 | PlayStation | Sports - Snowboarding | 26 November 2020 21:08:04 | - |
| MVP 07 NCAA Baseball (Nov 29, 2006 prototype) | 29 November 2006 09:33:03 | PlayStation 2 | Sports - Baseball | 20 March 2021 23:55:45 | - |
| MVP Baseball 2003 (Dec 15, 2002 17.21 prototype) | 15 December 2002 17:21:25 | Xbox | Sports | 18 September 2021 21:45:22 | - |
| MVP Baseball 2003 (Dec 15, 2002 prototype) | 15 December 2002 07:16:52 | PlayStation 2 | Sports - Baseball | 20 March 2021 23:32:37 | - |
| MX Rider (Aug 19, 2001 prototype) | 19 August 2001 19:19:46 | PlayStation 2 | Racing | 20 March 2021 23:58:19 | - |
| MX Rider (Jul 27, 2001 prototype) | 27 July 2001 01:07:32 | PlayStation 2 | Racing | 20 March 2021 23:39:37 | - |
| MX SuperFly (Oct 10, 2002 prototype) | 10 October 2002 13:03:07 | Xbox | Racing | 18 September 2021 22:08:43 | - |
| MX Unleashed (Dec 11, 2003 prototype) | 11 December 2003 05:44:08 | PlayStation 2 | Racing | 20 March 2021 23:42:17 | - |
| MX vs. ATV Untamed (Nov 20, 2007 prototype) | 20 November 2007 16:07:56 | PlayStation Portable | Racing | 6 May 2020 02:54:18 | - |
| MX vs. ATV Untamed (Sep 12, 2007 prototype) | 12 September 2007 17:04:47 | Xbox 360 | Racing | 25 September 2023 21:09:00 | - |
| MX vs. ATV Untamed (Sep 28, 2007 Prototype) | September 28 JL | Xbox 360 | Racing | 28 May 2023 20:05:11 | - |
| Mace Griffin: Bounty Hunter (Jan 16, 2003 prototype) | 16 January 2003 14:50:16 | PlayStation 2 | First Person Shooter | 20 March 2021 23:39:30 | - |
| Mace: The Dark Age (Prototype) | Nintendo 64 | Fighting | 15 February 2021 15:28:06 | - | |
| Machine Head (Aug 23, 1996 prototype) | 23 August 1996 12:58:10 | Sega Saturn | First Person Shooter | 17 April 2021 20:54:11 | - |
| Machine Head (May 10, 1996 prototype) | 10 May 1996 19:39:42 | Sega Saturn | First Person Shooter | 17 April 2021 20:58:13 | - |
| Machines (Dec 30, 1998 prototype) | 30 December 1998 | PC | RTS | 7 January 2023 13:31:19 | - |
| Macross VF-X2, Patlabor - The Game (Demo Disc) | PlayStation | 21 November 2019 06:37:58 | - | ||
| Mad Dash Racing (Oct 13, 2001 prototype) | 13 October 2001 18:04:02 | Xbox | Racing | 18 September 2021 22:03:13 | - |
| Mad Dog McCree (Aug 26, 1994 prototype) | 26 August 1994 | Philips CD-i | FMV | 2 August 2017 19:09:45 | - |
| Mad Riders (Jan 6, 2012 Prototype) | 6 January 2012 | Xbox 360 | Racing | 16 September 2023 20:08:10 | - |
| Mad Tracks (Apr 30, 2007 prototype) | 30 April 2007 | Xbox 360 | Driving/Racing | 29 October 2023 11:41:49 | - |
| Madagascar 3: The Video Game (Mar 3, 2012 prototype) | 3 March 2012 17:47:31 | Xbox 360 | Action Adventure | 25 September 2023 21:03:55 | - |
| Madballs in Babo: Invasion (Apr 10, 2009 prototype) | 10 April 2009 | Xbox 360 | Action | 16 August 2023 15:23:29 | - |
| Madballs in Babo: Invasion (May 29, 2009 prototype) | 29 May 2009 | Xbox 360 | Action | 16 August 2023 15:29:33 | - |
| Madden NFL '96 (Oct 25, 1995) | 25 October 1995 03:28:04 | PlayStation | Sports - Football | 17 August 2017 17:58:36 | ✓ |
| Madden NFL 08 (Jul 7, 2007 prototype) | 7 July 2007 08:19:04 | Xbox 360 | Sports - Football | 25 September 2023 20:38:29 | - |
| Madden NFL 08 (May 8, 2007 prototype) | 8 May 2007 | Xbox | Sports - Football | 11 March 2020 19:25:17 | - |
| Madden NFL 09 (Jun 17, 2008 prototype) | 17 June 2008 | Xbox 360 | Sports | 25 December 2022 23:38:16 | - |
| Madden NFL 10 (Jul 26, 2007 prototype) | 26 July 2007 01:40:05 | Xbox 360 | Sports - Football | 25 September 2023 20:14:29 | - |
| Madden NFL 11 (Jun 23, 2010 prototype) | 23 June 2010 15:25:27 | Xbox 360 | Sports - Football | 25 September 2023 20:16:12 | - |
| Madden NFL 11 (May 26, 2010 prototype) | 26 May 2010 06:14:07 | Xbox 360 | Sports - Football | 22 January 2024 23:17:22 | - |
| Madden NFL 2000 (prototype) | Game Boy Color | Sports | 25 June 2022 22:48:39 | - | |
| Madden NFL 2003 (Aug 3, 2002 prototype) | 3 August 2002 | Xbox | Sports, Simulation, Football | 9 December 2023 14:25:10 | - |
| Madden NFL 2003 (Jul 10, 2002 prototype) | 10 July 2002 00:16:56 | Xbox | Sports | 18 September 2021 21:33:03 | - |
| Madden NFL 2003 (Jul 22, 2002 prototype) | 22 July 2002 | Xbox | Sports, Simulation, Football | 15 December 2023 15:43:27 | - |
| Madden NFL 2003 (Jun 6, 2002 prototype) | 6 June 2002 18:00:53 | PlayStation 2 | Sports - Football | 20 March 2021 23:45:58 | - |
| Madden NFL 96 (Nov 2, 1995 prototype) | 2 November 1995 00:40:24 | PlayStation | Sports - Football | 17 April 2021 21:19:34 | ✓ |
| Madden NFL 96 (Oct 25, 1995 prototype) | 25 October 1995 03:28:04 | PlayStation | Sports - Football | 3 June 2021 03:02:45 | ✓ |
| Madden NFL 97 (Aug 1, 1996 prototype) | 1 August 1996 17:51:26 | Sega Saturn | Sports - Football | 17 April 2021 21:00:28 | - |
| Madden NFL 97 (Jul 16, 1996 prototype) | 16 July 1996 01:33:08 | Sega Saturn | Sports - Football | 8 May 2021 20:08:24 | - |
| Madden NFL 98 (Jul 25, 1997 prototype) | 25 July 1997 19:08:42 | Sega Saturn | Sports - Football | 17 April 2021 20:59:51 | - |
| Madden NFL 99 (August 5th, 1998 prototype) | 5 August 1998 | Nintendo 64 | Sports | 28 April 2021 21:27:10 | - |
| Made Man (July 16, 2006 prototype) | 16 July 2006 | PC | Third-person shooter | 28 January 2022 23:41:44 | - |
| Made Man (Mar 11, 2005 prototype) | 11 March 2005 14:37:01 | Xbox | Third-Person Shooter | 18 September 2021 21:24:00 | - |
| Made Man (May 11, 2004 E3 Prototype) | 11 May 2004 | Xbox | Action | 22 November 2016 21:57:01 | ✓ |
| Made Man (Sep 5, 2006 prototype) | 5 September 2006 | PlayStation 2 | Third-person shooter | 25 June 2022 15:48:52 | - |
| Madness: Project Nexus (Jul 1, 2016 prototype) | 1 July 2016 16:37:00 | PC | Shooter | 26 November 2023 17:09:32 | - |
| Mafia (Jul 31, 2002 demo) | 31 July 2002 | PC | Action | 27 March 2024 13:50:28 | - |
| Mafia (Sep 24, 2003 prototype) | 24 September 2003 23:37:54 | PlayStation 2 | Action | 20 March 2021 23:47:37 | - |
| Mafia II (Aug 25, 2010 prototype) | 25 August 2010 06:24:23 | Xbox 360 | Action | 25 September 2023 20:22:17 | - |
| Mafia II (Jul 10, 2010 prototype) | 10 July 2010 | Xbox 360 | Action | 25 September 2023 20:35:00 | - |
| Mafia II (Jul 19, 2010 demo) | 19 July 2010 11:59:45 | Xbox 360 | Third-person Shooter, Action-adventure | 27 March 2024 13:57:15 | - |
| Mafia II (Jun 10, 2010 prototype) | 10 June 2010 | Xbox 360 | Third-person Shooter, Action-adventure | 25 December 2022 23:37:28 | - |
| Mafia II (PS3 demo) | PlayStation 3 | Third-person Shooter, Action-adventure | 27 March 2024 13:33:17 | - | |
| MagForce Racing (Apr 5, 2000 prototype) | 5 April 2000 | Dreamcast | Racing | 18 January 2017 22:42:52 | - |
| MagForce Racing (May 24, 2000 prototype) | 24 May 2000 20:21:08 | Dreamcast | Racing | 27 December 2017 01:08:10 | - |
| MageWar (Nov 8, 2002 prototype) | 8 November 2002 | Xbox | Action | 1 August 2017 03:47:53 | ✓ |
| Magic & Mayhem: The Art of Magic (Sep 18, 2001 prototype) | 18 September 2001 10:23:53 | PC | Role playing | 10 February 2019 19:22:16 | - |
| Magic Boy (Prototype) | SNES | Action | 25 January 2020 21:39:04 | - | |
| Magic Carpet (Jan 24, 1996 prototype) | 24 January 1996 16:31:35 | Sega Saturn | First Person Shooter | 17 April 2021 20:53:27 | - |
| Magic Knight Rayearth (Oct 8, 1998 prototype) | 8 October 1998 07:48:02 | Sega Saturn | Role Playing | 17 April 2021 20:57:38 | - |
| Magic Knight Rayearth (Sep 16, 1997 prototype) | 16 September 1997 16:27:00 | Sega Saturn | Role Playing | 17 April 2021 21:00:43 | - |
| Magic Pengel: The Quest for Color (Feb 25, 2003 prototype) | 25 February 2003 17:18:18 | PlayStation 2 | Role-playing | 20 March 2021 23:36:24 | - |
| Magic Pengel: The Quest for Color (Mar 5, 2003 prototype) | 5 March 2003 11:35:52 | PlayStation 2 | Role-playing | 20 March 2021 23:42:35 | - |
| Magic: The Gathering - Battlegrounds (Aug 25, 2003 prototype) | 25 August 2003 03:28:32 | Xbox | Real-Time Strategy | 18 September 2021 21:47:50 | - |
| Magic: The Gathering - Battlegrounds (Oct 7, 2003 prototype) | 7 October 2003 19:16:05 | Xbox | Real-Time Strategy | 18 September 2021 21:53:01 | - |
| Magic: The Gathering - Duels of the Planeswalkers (Feb 12, 2009 prototype) | 12 February 2009 | Xbox 360 | Card game | 16 August 2023 15:29:41 | - |
| Magic: The Gathering - Duels of the Planeswalkers (Jan 9, 2009 prototype) | 9 January 2009 | Xbox 360 | Card game | 16 August 2023 16:03:17 | - |
| Magic: The Gathering - Duels of the Planeswalkers 2012 (May 5, 2011 prototype) | 5 May 2011 | Xbox 360 | Card Game | 26 August 2023 00:56:07 | - |
| Magical Doropie (Prototype) | NES | Action | 25 January 2020 21:46:55 | - | |
| Magical Drop (Game Boy Color Prototype) | Game Boy Color | Puzzle | 16 June 2022 12:25:40 | - | |
| Magical Drop (Neo Geo Pocket Prototype) | Neo Geo Pocket Color | Puzzle | 1 November 2016 23:33:24 | - | |
| Magician (Mar 2, 1990 prototype) | 2 March 1990 | NES | Adventure | 20 July 2016 00:46:42 | - |
| Magician (Prototype A) | NES | Adventure | 10 January 2024 16:41:25 | - | |
| Magician (Prototype B) | NES | Adventure | 10 January 2024 16:35:30 | - | |
| Magna Carta (Oct 20, 2004 prototype) | 20 October 2004 02:53:42 | PlayStation 2 | Role Playing | 20 March 2021 23:33:07 | - |
| Magna Carta: Tears of Blood (Sep 23, 2005 prototype) | 23 September 2005 11:35:00 | PlayStation 2 | Action | 20 March 2021 23:46:35 | - |
| MagnaCarta II (Jul 28, 2009 prototype) | 28 July 2009 00:00:00 | Xbox 360 | Role Playing | 25 September 2023 20:34:06 | - |
| MagnaCarta II (Jun 16, 2009 prototype) | 16 June 2009 | Xbox 360 | RPG | 25 December 2022 23:36:19 | - |
| Magnetic Joe (Jan 12, 2011 prototype) | 12 January 2011 | Nintendo DS | Puzzle, Action | 20 March 2024 19:50:17 | - |
| Magrunner: Dark Pulse (Jul 5, 2013 prototype) | 5 July 2013 | Xbox 360 | Puzzle | 16 August 2023 15:34:55 | - |
| Mahjong Sengoku Jidai (Prototype) | Sega Master System | Table | 11 March 2017 09:37:14 | - | |
| Mail Plane (Prototype 1) | Other | Arcade | 22 November 2016 21:26:03 | ✓ | |
| Mail Plane (Prototype 2) | Other | Arcade | 22 November 2016 21:27:00 | ✓ | |
| Majin and the Forsaken Kingdom (Aug 4, 2010 prototype) | 4 August 2010 | Xbox 360 | Action-adventure, Puzzle, Platformer | 25 December 2022 23:38:25 | - |
| Majin and the Forsaken Kingdom (Jul 8, 2010 prototype) | 8 July 2010 10:54:11 | Xbox 360 | Role Playing | 25 September 2023 21:18:03 | - |
| Majin and the Forsaken Kingdom (Oct 3, 2010 prototype) | 3 October 2010 | Xbox 360 | Action-adventure, Puzzle, Platformer | 25 December 2022 23:37:01 | - |
| Major Damage (Jul 14, 1996 prototype) | 14 July 1996 12:43:48 | Sega Saturn | Action | 29 November 2016 22:32:55 | ✓ |
| Major Damage (Jun 14, 1996 prototype) | 14 June 1996 08:32:54 | Sega Saturn | Action | 29 November 2016 22:32:06 | ✓ |
| Major League Baseball 2K6 (May 18, 2006 prototype) | 18 May 2006 | Nintendo GameCube | Sports - Baseball | 20 November 2016 10:57:25 | - |
| Major League Baseball 2K6 (prototype) | Nintendo DS | Sports | 23 November 2020 22:56:45 | ✓ | |
| Major League Baseball 2K7 (Prototype) | Game Boy Advance | Sports | 27 February 2021 15:04:17 | - | |
| Major Stryker (Aug 12, 1992 prototype) | 12 August 1992 13:56:46 | PC | Shooter | 18 January 2018 02:52:56 | - |
| Makai Island (prototype) | NES | 15 April 2022 14:57:05 | - | ||
| Makai Kingdom: Chronicles of the Sacred Tome (Apr 28, 2005 prototype) | 28 April 2005 14:41:09 | PlayStation 2 | Turn-Based Tactics | 20 March 2021 23:58:50 | - |
| Makai Kingdom: Chronicles of the Sacred Tome (Feb 3, 2005 prototype) | 3 February 2005 21:37:18 | PlayStation 2 | Turn-Based Tactics | 20 March 2021 23:47:11 | - |
| Makai Kingdom: Chronicles of the Sacred Tome (Mar 10, 2005 prototype) | 10 March 2005 11:50:25 | PlayStation 2 | Turn-Based Tactics | 20 March 2021 23:43:50 | - |
| Makai Kingdom: Chronicles of the Sacred Tome (May 10, 2005 prototype) | 10 May 2005 14:03:18 | PlayStation 2 | Turn-Based Tactics | 20 March 2021 23:45:52 | - |
| Make My Video: INXS (Dec 15, 1992 prototype) | 15 December 1992 12:49:04 | Sega CD | FMV | 11 March 2020 22:42:35 | - |
| Make My Video: INXS (Jan 18, 1993 prototype) | 18 January 1993 09:30:11 | Sega CD | FMV | 18 November 2016 14:56:05 | - |
| Make My Video: Kris Kross (Nov 30, 1992 prototype) | 30 November 1992 10:10:02 | Sega CD | FMV | 18 November 2016 15:08:47 | - |
| Make My Video: Marky Mark and the Funky Bunch (Jan 20, 1993 prototype) | 20 January 1993 18:27:55 | Sega CD | FMV | 18 November 2016 15:16:39 | - |
| Maken X (Feb 9, 2000 prototype) | 9 February 2000 15:13:13 | Dreamcast | Action Adventure | 18 September 2021 19:42:30 | - |
| Malice (Nov 29, 2002 prototype) | 29 November 2002 10:59:22 | Xbox | Platform | 8 July 2022 18:55:08 | - |
| Malice (Sep 12, 2003 prototype) | 12 September 2003 11:27:43 | Xbox | Platform | 16 March 2024 23:06:37 | - |
| Mall Tycoon 2 (Aug 26, 2003 prototype) | 26 August 2003 12:22:32 | PC | Strategy, Simulation | 3 March 2024 15:53:24 | - |
| Mana Khemia 2: Fall of Alchemy (Jul 10, 2009 prototype) | 10 July 2009 00:30:06 | PlayStation 2 | Role Playing | 20 March 2021 23:34:25 | - |
| Mana Khemia 2: Fall of Alchemy (Jun 29, 2009 prototype) | 29 June 2009 00:01:33 | PlayStation 2 | Role Playing | 20 March 2021 23:40:15 | - |
| Mana Khemia: Alchemists of Al-Revis (Jan 30, 2008 prototype) | 30 January 2008 18:28:52 | PlayStation 2 | Role Playing | 20 March 2021 23:55:45 | - |
| Mana Khemia: Student Alliance (Dec 9, 2008 prototype) | 9 December 2008 | PlayStation Portable | Role-playing | 16 February 2023 00:38:11 | - |
| Mandrake the Magician: Shadow of the Vehme (Prototype) | Game Boy Advance | Adventure | 13 December 2016 00:17:09 | ✓ | |
| Manhunt (May 13, 2003 prototype) | 13 May 2003 23:27:08 | PlayStation 2 | 9 April 2024 13:26:34 | - | |
| Manhunt 2 (Feb 5, 2007 prototype) | 5 February 2007 | PlayStation Portable | Stealth | 5 April 2024 13:35:11 | - |
| Manhunt 2 (May 10, 2007 prototype) | 10 May 2007 | PlayStation 2 | Action | 17 January 2023 10:06:02 | - |
| Maniac Mansion (NES Prototype) | NES | Point and click | 5 April 2023 16:08:39 | - | |
| Maniac Moons (Feb 25, 1999 prototype) | 25 February 1999 | PlayStation | Flight Combat | 7 December 2020 19:16:59 | ✓ |
| Manic Monkey Mayhem (May 25, 2010 Nintendo DS prototype) | 25 May 2010 00:03:54 | Nintendo DS | Fighting | 6 February 2024 15:49:09 | ✓ |
| Maou Golvellius (Prototype) | Sega Master System | Action | 11 March 2017 09:41:02 | - | |
| Marathon: Durandal (Jul 2, 2007 prototype) | 2 July 2007 | Xbox 360 | First Person Shooter | 26 August 2023 00:57:47 | - |
| Marble Blast Ultra (Dec 13, 2005 prototype) | 13 December 2005 | Xbox 360 | Action | 26 August 2023 00:58:30 | - |
| Marble Blast Ultra (Jan 11, 2006 prototype) | 11 January 2006 | Xbox 360 | Action, Platformer | 29 October 2023 11:45:19 | - |
| Marc Ecko's Getting Up: Contents Under Pressure (Dec 13, 2005 Prototype) | 13 December 2005 15:02:43 | Xbox | Action-adventure, beat 'em up | 21 June 2020 04:04:22 | - |
| Marc Ecko's Getting Up: Contents Under Pressure (Dec 2, 2005 prototype) | 2 December 2005 18:55:19 | PlayStation 2 | Beat-em-up | 20 March 2021 23:53:14 | - |
| Marc Ecko's Getting Up: Contents Under Pressure (Dec 3, 2005 prototype) | 3 December 2005 04:01:08 | Xbox | Action-Adventure, Beat-Em-Up | 18 September 2021 21:50:42 | - |
| Marc Ecko's Getting Up: Contents Under Pressure (Jan 7, 2006 Prototype) | 7 January 2006 | Xbox | Action-adventure, beat-em-up | 22 September 2023 11:29:14 | - |
| Marc Ecko's Getting Up: Contents Under Pressure (May 17, 2005 prototype) | 17 May 2005 | PlayStation 2 | Action Adventure | 12 August 2023 22:48:33 | - |
| Marco Polo (May 2, 1995 prototype) | 2 May 1995 | Philips CD-i | FMV | 2 August 2017 19:11:15 | - |
| Mario & Luigi: Dream Team (May 13, 2013 demo) | 13 May 2013 | Nintendo 3DS | RPG | 16 March 2023 16:46:08 | - |
| Mario & Luigi: Superstar Saga (May 3, 2003 prototype) | 3 May 2003 15:56:48 | Game Boy Advance | 24 October 2023 18:05:27 | - | |
| Mario & Luigi: Superstar Saga (iQue prototype) | 7 February 2007 15:06:03 | Game Boy Advance | Role-playing | 25 March 2019 08:52:04 | - |
| Mario & Sonic at the Olympic Games (USA kiosk demo) | Nintendo DS | Sports | 12 July 2016 22:56:04 | - | |
| Mario & Sonic at the Olympic Winter Games (Aug 19, 2009 prototype) | 19 August 2009 11:53:04 | Nintendo Wii | Sports | 1 June 2022 13:04:23 | - |
| Mario & Sonic at the Olympic Winter Games (Jul 8, 2009 prototype) | 8 July 2009 15:52:59 | Nintendo Wii | Sports | 1 June 2022 12:51:30 | - |
| Mario & Sonic at the Rio 2016 Olympic Games (Feb 11, 2016 prototype) | 11 February 2016 | Nintendo Wii U | Sports, Minigame Collection | 16 February 2024 08:34:19 | - |
| Mario Artist Paint Studio (Feb 11, 1999 prototype) | 11 February 1999 12:27:49 | Nintendo 64DD | Art | 21 June 2020 17:28:02 | - |
| Mario Kart 64 (Aug 1, 2003 prototype) | 1 August 2003 | Nintendo 64 | Driving/Racing, Vehicular Combat | 13 February 2024 23:22:17 | - |
| Mario Kart 64 (Aug 29, 2003 iQue prototype) | 29 August 2003 | Nintendo 64 | Driving/Racing, Vehicular Combat | 13 February 2024 23:25:13 | - |
| Mario Kart 64 (Dec 1, 2003 iQue prototype) | 1 December 2003 | Nintendo 64 | Driving/Racing, Vehicular Combat | 13 February 2024 23:27:42 | - |
| Mario Kart 64 (Feb 4, 2003 iQue prototype) | 4 February 2003 | Nintendo 64 | Driving/Racing, Vehicular Combat | 13 February 2024 23:16:05 | - |
| Mario Kart 64 (Jan 23, 2003 US prototype) | 23 January 2003 | Nintendo 64 | Driving/Racing, Vehicular Combat | 13 February 2024 23:13:24 | - |
| Mario Kart 64 (Jul 3, 2003 iQue prototype) | 3 July 2003 | Nintendo 64 | Driving/Racing, Vehicular Combat | 13 February 2024 23:19:35 | - |
| Mario Kart 8 Deluxe (Oct 18, 2016 prototype) | 18 October 2016 09:37:23 | Nintendo Switch | Racing | 19 October 2023 15:13:03 | - |
| Mario Kart DS (USA kiosk demo) | 30 May 2005 18:20:47 | Nintendo DS | Racing | 16 February 2017 12:50:35 | - |
| Mario Kart XXL (Apr 17, 2004 Tech Demo) | 17 April 2004 | Game Boy Advance | Tech Demo | 15 October 2022 11:51:47 | ✓ |
| Mario Kart: Double Dash (July 5, 2004 debug build) | 5 July 2004 13:04:10 | Nintendo GameCube | Racing | 13 May 2022 12:28:40 | - |
| Mario Kart: Super Circuit (iQue Prototype) | Game Boy Advance | Racing | 25 March 2019 08:50:21 | - | |
| Mario Paint (prototype) | SNES | Art | 11 August 2017 22:19:43 | - | |
| Mario Party 3 (Prototype) | Nintendo 64 | Party | 16 February 2022 19:19:24 | - | |
| Mario Wacky Worlds (Mar 2, 1993 prototype) | 2 March 1993 | Philips CD-i | Action | 2 August 2017 20:03:48 | - |
| Mario is Missing (Mar 20, 1993 prototype) | 20 March 1993 | SNES | Educational | 3 August 2023 14:47:57 | - |
| Mario's Time Machine (Prototype) | SNES | Educational | 4 January 2019 08:10:18 | - | |
| Marko's Magic Football (Apr 12, 1995 prototype) | 12 April 1995 17:20:45 | Sega CD | Action | 18 November 2016 09:55:49 | ✓ |
| Marko's Magic Football (Prototype) | Sega Mega Drive | Sports - Football | 12 February 2019 19:02:18 | - | |
| Marlow Briggs and the Mask of Death (Jun 10, 2013 prototype) | 10 June 2013 | Xbox 360 | Action Adventure | 16 August 2023 15:31:55 | - |
| Marmalade Boy (Prototype) | SNES | Strategy | 7 December 2016 19:56:24 | - | |
| Martin Mystery (prototype) | Nintendo DS | Adventure | 4 June 2019 22:10:04 | - | |
| Maru's Quest (Prototype) | SNES | Action | 25 January 2019 23:50:43 | ✓ | |
| Marvel Avengers: Battle for Earth (Sep 13, 2012 prototype) | 13 September 2012 00:00:00 | Xbox 360 | Fighting | 25 September 2023 20:59:25 | - |
| Marvel Chaos (Oct 17, 2007 Prototype) | October 17 JL | Xbox 360 | 27 May 2023 17:49:18 | ✓ | |
| Marvel Nemesis: Rise of the Imperfects (Jul 10, 2005 prototype) | 10 July 2005 20:04:12 | Xbox | Fighting | 18 September 2021 21:58:24 | - |
| Marvel Super Heroes (Aug 19, 1997 prototype) | 19 August 1997 15:52:14 | Sega Saturn | Fighting | 17 April 2021 20:54:18 | - |
| Marvel Super Heroes: War of the Gems (Prototype A) | SNES | Platformer | 10 January 2024 21:52:13 | - | |
| Marvel Super Heroes: War of the Gems (Prototype B) | SNES | Platformer | 1 January 2022 20:46:36 | - | |
| Marvel vs. Capcom 2 (Apr 10, 2000 prototype) | 10 April 2000 00:00:00 | Dreamcast | Fighting | 18 September 2021 19:40:48 | - |
| Marvel vs. Capcom 2: New Age of Heroes (Aug 8, 2002 prototype) | 8 August 2002 09:45:10 | PlayStation 2 | Fighting | 4 September 2020 00:15:24 | - |
| Marvel vs. Capcom 3: Fate of Two Worlds (Dec 14, 2010 prototype) | 14 December 2010 | PlayStation 3 | Fighting | 24 December 2020 22:27:15 | - |
| Marvel vs. Capcom 3: Fate of Two Worlds (May 30, 2011 prototype) | 30 May 2011 | PlayStation 3 | Fighting | 12 February 2024 12:05:22 | - |
| Marvel vs. Capcom 3: Fate of Two Worlds (Nov 27, 2010 prototype) | 27 November 2010 | Xbox 360 | Fighting | 25 December 2022 23:38:11 | - |
| Marvel vs. Capcom Origins (May 7, 2012 Prototype) | 7 May 2012 | Xbox 360 | Fighting | 16 September 2023 20:14:27 | - |
| Marvel vs. Capcom Origins (May 8, 2012 prototype) | 8 May 2012 | Xbox 360 | Fighting Compilation | 16 August 2023 15:46:05 | - |
| Marvel: Ultimate Alliance (DLC Playable Character Pack prototype) | Xbox 360 | Action RPG | 9 March 2024 19:15:02 | - | |
| Marvel: Ultimate Alliance (Feb 24, 2006 prototype) | 24 February 2006 14:47:55 | Xbox | Action | 22 November 2020 08:37:12 | - |
| Marvel: Ultimate Alliance (Sep 8, 2006 prototype) | 8 September 2006 | Xbox 360 | Action RPG | 25 December 2022 23:38:24 | - |
| Mashed: Drive to Survive (Nov 3, 2004 prototype) | 3 November 2004 14:36:34 | Xbox | Vehicular Combat | 18 September 2021 22:01:01 | - |
| Mass Destruction (Mar 10, 1997 prototype) | 10 March 1997 19:57:28 | Sega Saturn | Action | 17 April 2021 20:56:04 | - |
| Mass Destruction (Sep 6, 1996 prototype) | 6 September 1996 23:32:58 | Sega Saturn | Action | 17 April 2021 20:53:24 | - |
| Mass Effect 2 (Dec 16, 2009 prototype) | 16 December 2009 00:00:00 | Xbox 360 | Role Playing | 25 September 2023 20:14:23 | - |
| Mass Effect 2 (Sep 10, 2010 prototype) | 10 September 2010 07:54:06 | Xbox 360 | Role Playing | 25 September 2023 21:17:28 | - |
| Mass Effect 3 (Jan 18, 2012 prototype) | 18 January 2012 08:37:02 | Xbox 360 | Role Playing | 25 September 2023 20:08:32 | - |
| Mass Effect 3 (Nov 1, 2011 Prototype) | 1 November 2011 | Xbox 360 | Third Person Shooter | 28 May 2023 15:51:19 | - |
| Master of Monsters (Apr 26, 1991 prototype) | 26 April 1991 16:25:14 | Sega Mega Drive | Strategy | 13 May 2016 15:53:07 | - |
| Mat Hoffman's Pro BMX (Apr 12, 2001 prototype) | 12 April 2001 | PlayStation | Sports - Biking | 15 March 2020 17:03:18 | - |
| Mat Hoffman's Pro BMX (Apr 4, 2001 prototype) | 4 April 2001 16:37:47 | PlayStation | Sports | 11 October 2020 22:03:18 | - |
| Mat Hoffman's Pro BMX (Jul 4, 2001 prototype) | 4 July 2001 16:29:52 | Dreamcast | Sports - Biking | 18 September 2021 19:42:33 | - |
| Mat Hoffman's Pro BMX (Jun 29, 2001 prototype) | 29 June 2001 15:26:12 | Dreamcast | Sports | 10 August 2019 02:18:59 | - |
| Mat Hoffman's Pro BMX 2 (Feb 25, 2002 prototype) | 5 February 2002 20:05:36 | PlayStation 2 | Sports - Biking | 20 March 2021 23:29:33 | - |
| Mat Hoffman's Pro BMX 2 (Jul 11, 2002 prototype) | 11 July 2002 19:22:04 | PlayStation 2 | Sports - Biking | 20 March 2021 23:51:11 | - |
| Mat Hoffman's Pro BMX 2 (May 17, 2002 prototype) | 17 May 2002 12:50:30 | PlayStation 2 | Sports | 2 July 2020 05:44:15 | - |
| Mat Hoffman's Pro BMX 2 (Oct 29, 2002 prototype) | 29 October 2002 | Xbox | Action, Sports | 9 December 2023 14:28:49 | - |
| Matsumura Kunihiro Den: Saikyou no Rekishi wo Nurikaero! (Sample) | SNES | Action | 31 May 2018 15:53:55 | - | |
| Matt Hazard: Blood Bath And Beyond (Oct 7, 2009 prototype) | 7 October 2009 | Xbox 360 | Action, Shooter, Platformer | 29 October 2023 11:58:31 | - |
| Max Magic (Aug 18, 1994 prototype) | 18 August 1994 | Philips CD-i | FMV | 2 August 2017 19:12:41 | - |
| Max Payne (Feb 19, 2002 prototype) | 19 February 2002 | Xbox | Shooter, Action-Adventure | 9 December 2023 14:34:23 | - |
| Max Payne 2: The Fall of Max Payne (Nov 4, 2003 prototype) | 4 November 2003 | PlayStation 2 | Action | 6 April 2023 03:21:58 | - |
| Max Power Racing (Nov 12, 1998 prototype) | 12 November 1998 | PlayStation | Racing | 21 March 2020 16:53:37 | - |
| Max: The Curse of Brotherhood (Jun 11, 2013 prototype) | 11 June 2013 | Xbox 360 | Action Adventure | 16 August 2023 15:30:16 | - |
| Max: The Curse of Brotherhood (Jun 6, 2013 Prototype) | 6 June 2013 | Xbox 360 | Platformer | 16 September 2023 20:29:47 | - |
| Maximo: Ghosts to Glory (Dec 18, 2001 prototype) | 18 December 2001 15:28:26 | PlayStation 2 | Platformer | 20 March 2021 23:30:50 | - |
| Maximo: Ghosts to Glory (Jul 9, 2001 prototype) | 9 July 2001 12:20:17 | PlayStation 2 | Platformer | 20 March 2021 23:52:13 | - |
| Maximo: Ghosts to Glory (Sep 11, 2001 prototype) | 11 September 2001 10:18:18 | PlayStation 2 | Platformer | 20 March 2021 23:50:46 | - |
| Maximum Chase (Oct 7, 2003 prototype) | 7 October 2003 07:32:53 | Xbox | Vehicular Combat | 18 September 2021 22:00:46 | - |
| Maximum Force (Jul 24, 1997 prototype) | 24 July 1997 17:01:20 | PlayStation | Light Gun | 26 November 2020 21:08:29 | - |
| Maximum Force (Jun 13, 1997 prototype) | 13 June 1997 17:20:12 | Sega Saturn | Rail Shooter | 17 April 2021 20:54:23 | - |
| Mayhem 3D (Aug 11, 2010 prototype) | 11 August 2010 17:50:10 | Xbox 360 | Racing | 25 September 2023 21:04:17 | - |
| Mayhem 3D (Jan 28, 2011 prototype) | 28 January 2011 22:12:09 | Xbox 360 | Racing | 25 September 2023 21:10:09 | - |
| Mayhem 3D (Jun 30, 2010 prototype) | 30 June 2010 19:13:37 | Xbox 360 | Racing | 25 September 2023 20:41:22 | - |
| Mayhem 3D (Nov 17, 2010 prototype) | 17 November 2010 02:21:14 | Xbox 360 | Racing | 25 September 2023 20:16:49 | - |
| Mayhem 3D (Oct 13, 2010 prototype) | 13 October 2010 21:25:31 | Xbox 360 | Racing | 25 September 2023 20:17:01 | - |
| Mayhem 3D (Sep 8, 2010 prototype) | 8 September 2010 17:27:36 | Xbox 360 | Racing | 25 September 2023 20:13:33 | - |
| Mazes of Fate (Jan 15, 2008 prototype) | 15 January 2008 12:31:45 | Nintendo DS | RPG | 8 August 2017 16:24:14 | - |
| McDonald's Treasure Land Adventure (Prototype) | Sega Mega Drive | Action | 12 February 2019 19:21:32 | - | |
| MechAssault 2: LoneWolf (Oct 11, 2004 prototype) | 11 October 2004 | Xbox | Action | 9 February 2019 11:46:28 | - |
| MechWarrior (Prototype B) | SNES | Action | 1 January 2022 20:44:20 | - | |
| MechWarrior 2: 31st Century Combat - Arcade Combat Edition (Oct 7, 1996 prototype) | 7 October 1996 19:38:08 | Sega Saturn | Action | 17 April 2021 20:54:29 | - |
| Mechanic Mechanica (Prototype) | Game Boy Advance | Action | 23 December 2021 20:54:41 | ✓ | |
| Medal of Honor (Jul 13, 2010 Multiplayer Prototype) | 13 July 2010 | Xbox 360 | FPS | 28 May 2023 16:13:14 | - |
| Medal of Honor (May 20, 2010 prototype) | 20 May 2010 | PlayStation 3 | First-Person Shooter | 22 December 2023 23:23:35 | - |
| Medal of Honor (Sep 14, 2010 prototype) | 14 September 2010 | PlayStation 3 | First-Person Shooter | 3 January 2024 09:40:23 | - |
| Medal of Honor: Airborne (Aug 12, 2007 prototype) | 12 August 2007 00:00:00 | Xbox 360 | Action | 25 September 2023 20:52:33 | - |
| Medal of Honor: Frontline (Apr 14, 2002 prototype) | 14 April 2002 20:24:50 | PlayStation 2 | First-Person shooter | 20 March 2021 23:31:54 | - |
| Medal of Honor: Frontline (Aug 26, 2002 prototype) | 26 August 2002 11:15:14 | Xbox | First-Person Shooter | 18 September 2021 21:43:13 | - |
| Medal of Honor: Frontline (Mar 14, 2002 prototype) | 14 March 2002 05:33:52 | PlayStation 2 | First Person Shooter | 20 March 2021 23:23:23 | - |
| Medal of Honor: Heroes 2 (Oct 17, 2007 prototype) | 17 October 2007 | Nintendo Wii | First-person shooter | 25 December 2022 23:23:09 | - |
| Medal of Honor: Rising Sun (Oct 8, 2003 prototype) | 8 October 2003 12:11:22 | PlayStation 2 | Action | 20 March 2021 23:58:01 | - |
| MediEvil (Aug 12, 1998 prototype) | 12 August 1998 10:20:09 | PlayStation | Adventure | 1 April 2019 05:03:42 | - |
| MediEvil (Aug 14, 1997 rolling demo) | 14 August 1997 | PlayStation | Adventure | 18 September 2022 13:01:47 | - |
| MediEvil (Aug 19, 1998 prototype) | 19 August 1998 14:30:27 | PlayStation | Adventure | 27 May 2020 12:33:22 | - |
| MediEvil (Aug 28, 1998 demo) | 28 August 1998 10:06:23 | PlayStation | Action | 27 March 2019 12:47:00 | - |
| MediEvil (Aug 6, 1998 prototype) | 6 August 1998 16:41:18 | PlayStation | Action | 30 December 2016 03:30:04 | - |
| MediEvil (Jul 14, 1998 prototype) | 14 July 1998 10:52:32 | PlayStation | Adventure | 1 April 2019 05:02:10 | - |
| MediEvil (Jul 17, 1998 prototype) | 17 July 1998 13:39:40 | PlayStation | Adventure | 1 April 2019 05:02:18 | - |
| MediEvil (Jul 21, 1998 prototype) | 21 July 1998 22:36:15 | PlayStation | Adventure | 1 April 2019 05:02:27 | - |
| MediEvil (Jul 24, 1998 prototype) | 24 July 1998 11:21:56 | PlayStation | Adventure | 1 April 2019 05:02:37 | - |
| MediEvil (Jul 28, 1998 prototype) | 28 July 1998 11:27:11 | PlayStation | Adventure | 1 April 2019 05:02:45 | - |
| MediEvil (Jul 30, 1998 prototype B) | 30 July 1998 13:53:44 | PlayStation | Adventure | 1 April 2019 05:03:05 | - |
| MediEvil (Jul 30, 1998 prototype C) | 30 July 1998 15:53:05 | PlayStation | Adventure | 1 April 2019 05:03:18 | - |
| MediEvil (Jul 30, 1998 prototype) | 30 July 1998 11:19:59 | PlayStation | Adventure | 1 April 2019 05:02:54 | - |
| MediEvil (Jul 31, 1998 prototype) | 31 July 1998 13:51:29 | PlayStation | Adventure | 1 April 2019 05:03:30 | - |
| MediEvil (Jul 4, 1998 prototype) | 4 July 1998 13:37:16 | PlayStation | Adventure | 1 April 2019 05:03:54 | - |
| MediEvil (Jul 6, 1998 prototype) | 6 July 1998 02:56:42 | PlayStation | Adventure | 1 April 2019 05:01:48 | - |
| MediEvil (Jul 8, 1998 prototype) | 8 July 1998 17:11:19 | PlayStation | Adventure | 1 April 2019 05:01:58 | - |
| MediEvil (Jul 9, 1998 prototype) | 9 July 1998 11:16:53 | PlayStation | Adventure | 2 January 2019 01:11:41 | - |
| MediEvil (Jun 12, 1998 prototype) | 12 June 1998 15:11:25 | PlayStation | Adventure | 1 April 2019 05:01:21 | - |
| MediEvil (Jun 15, 1998 prototype) | 15 June 1998 10:12:24 | PlayStation | Adventure | 1 April 2019 05:01:31 | - |
| MediEvil (Jun 22, 1998 prototype) | 22 June 1998 13:34:39 | PlayStation | Adventure | 2 January 2019 01:05:56 | - |
| MediEvil (Jun 26, 1998 prototype) | 26 June 1998 16:22:08 | PlayStation | Adventure | 1 April 2019 05:01:40 | - |
| MediEvil (Jun 5, 1998 prototype) | 5 June 1998 10:48:07 | PlayStation | Adventure | 1 April 2019 05:01:04 | - |
| MediEvil (Sep 7, 1997 prototype) | 7 September 1997 | PlayStation | Adventure | 17 September 2022 19:46:50 | - |
| MediEvil II (Dec 20, 1999 prototype) | 20 December 1999 21:37:00 | PlayStation | Adventure | 2 January 2019 01:24:04 | - |
| MediEvil II (Feb 28, 2000 prototype) | 28 February 2000 | PlayStation | Adventure | 17 September 2022 20:57:48 | - |
| MediEvil II (Feb 29, 2000 prototype A) | 29 February 2000 10:25:14 | PlayStation | Adventure | 2 January 2019 01:30:13 | - |
| MediEvil II (Feb 29, 2000 prototype B) | 29 February 2000 | PlayStation | Adventure | 21 May 2023 21:13:13 | - |
| MediEvil II (Jan 14, 2000 prototype A) | 14 January 2000 14:15:42 | PlayStation | Platform | 10 July 2022 04:17:16 | - |
| MediEvil II (Jan 14, 2000 prototype B) | 14 January 2000 15:54:34 | PlayStation | Platform | 17 April 2021 21:20:54 | - |
| MediEvil Resurrection (Jul 25, 2005 prototype) | 25 July 2005 | PlayStation Portable | Action | 10 July 2022 01:56:12 | - |
| MediEvil: Resurrection (Feb 15, 2005 prototype) | 15 February 2005 14:32:30 | PlayStation Portable | Action | 1 August 2017 03:54:55 | - |
| MediEvil: Resurrection (Mar 18, 2005 prototype) | 18 March 2005 10:23:31 | PlayStation Portable | Action | 25 December 2020 23:15:12 | - |
| Mega Bomberman (Eight Player Tech Demo) | Sega Mega Drive | Arcade | 18 November 2016 01:32:46 | ✓ | |
| Mega Man 10 (Dec 8, 2009 prototype) | 8 December 2009 20:08:20 | Xbox 360 | Action, Platformer | 21 January 2024 17:30:25 | - |
| Mega Man 10 (Jan 8, 2010 prototype) | 8 January 2010 | Xbox 360 | Action, Platformer | 29 October 2023 12:38:49 | - |
| Mega Man 10 (Oct 16, 2009 prototype) | 16 October 2009 | Xbox 360 | Action, Platformer | 21 January 2024 17:14:47 | - |
| Mega Man 10 (Oct 23, 2009 prototype) | 23 October 2009 | Xbox 360 | Action, Platformer | 21 January 2024 17:16:31 | - |
| Mega Man 10 (Oct 30, 2009 prototype) | 30 October 2009 | Xbox 360 | Action, Platformer | 21 January 2024 17:28:48 | - |
| Mega Man 9 (Aug 22, 2008 prototype) | 22 August 2008 | Xbox 360 | Platform | 8 September 2022 12:20:49 | - |
| Mega Man Anniversary Collection (May 6, 2004 prototype) | 6 May 2004 19:08:26 | PlayStation 2 | Compilation | 20 March 2021 23:39:17 | - |
| Mega Man Battle Network 2 (Oct 16, 2001 prototype - debug) | 16 October 2001 | Game Boy Advance | Action | 20 November 2016 00:05:25 | - |
| Mega Man III (US Sample) | Game Boy | Action | 25 July 2019 11:24:08 | - | |
| Mega Man Legends (May 13, 1998 prototype) | 13 May 1998 09:35:26 | PlayStation | Action | 17 April 2021 21:21:11 | - |
| Mega Man Legends (May 8, 1998 prototype) | 8 May 1998 15:30:24 | PlayStation | Action Adventure | 26 November 2020 21:09:08 | - |
| Mega Man Legends 2 (Jul 13, 2000 prototype) | 13 July 2000 11:22:20 | PlayStation | Adventure | 21 November 2016 08:53:25 | - |
| Mega Man Legends 2 (Sep 7, 2000 prototype) | 7 September 2000 21:27:48 | PlayStation | Action | 17 April 2021 21:17:02 | - |
| Mega Man X Collection (Nov 8, 2005 prototype) | 8 November 2005 10:35:00 | PlayStation 2 | Compilation | 20 March 2021 23:25:34 | - |
| Mega Man X4 (Apr 29, 1997 prototype) | 29 April 1997 15:59:38 | Sega Saturn | Platformer | 17 April 2021 20:55:37 | - |
| Mega Man X5 (Jul 28, 2000 prototype) | 28 July 2000 15:56:02 | PlayStation | Platformer | 17 April 2021 21:16:45 | - |
| Mega Man X6 (Oct 30, 2001 prototype) | 30 October 2001 11:45:30 | PlayStation | Platformer | 17 April 2021 21:14:20 | - |
| Mega Man X8 (Aug 12, 2004 prototype) | 12 August 2004 09:35:46 | PlayStation 2 | Action | 20 March 2021 23:42:08 | - |
| Mega Man X8 (Oct 20, 2004 prototype) | 20 October 2004 09:31:09 | PlayStation 2 | Action | 20 March 2021 23:38:31 | - |
| Mega Man X: Command Mission (Jul 23, 2004 prototype) | 23 July 2004 21:37:33 | PlayStation 2 | Role Playing | 20 March 2021 23:38:18 | - |
| Mega Man X: Command Mission E3 Version (May 8, 2004 prototype) | 8 May 2004 18:41:58 | PlayStation 2 | Role Playing | 25 November 2016 02:59:54 | - |
| Mega Man: Battle & Chase (Jan 8, 1997 prototype) | 8 January 1997 01:50:02 | PlayStation | Racing | 17 April 2021 21:24:14 | - |
| Mega Man: The Power Battle (Prototype) | Arcade | Fighting | 25 November 2016 03:32:13 | - | |
| Mega Maze (Sep 13, 1993 prototype) | 13 September 1993 | Philips CD-i | 6 June 2019 20:01:13 | - | |
| Mega Turrican (May 18, 1993 prototype) | 18 May 1993 | Sega Mega Drive | Shooter | 27 January 2020 22:46:43 | - |
| Megadrive Emulator (Jan 15, 2001 prototype) | 15 January 2001 16:44:53 | Dreamcast | Compilation | 10 January 2017 18:29:15 | ✓ |
| Megaman 64 (Prototype - Debug) | Nintendo 64 | Adventure | 20 November 2016 02:49:43 | - | |
| Melodie (Sep 2, 2005 prototype) | PlayStation Portable | Puzzle | 20 November 2016 00:27:03 | ✓ | |
| Men Of Valor (Apr 19, 2004 prototype) | 19 April 2004 21:27:28 | Xbox | FPS | 25 April 2024 18:47:19 | - |
| Men Of Valor (Jul 4, 2004 prototype) | 4 July 2004 19:48:38 | Xbox | FPS | 2 October 2023 02:29:18 | - |
| Men in Black II: Alien Escape (Apr 8, 2002 prototype) | 8 April 2002 15:14:04 | PlayStation 2 | Third Person Shooter | 20 March 2021 23:45:27 | - |
| Mer Wars (Prototype) | SNES | Action | 1 January 2022 20:43:57 | ✓ | |
| Mercury Hg (Jan 27, 2011 prototype) | 27 January 2011 | Xbox 360 | Puzzle | 16 August 2023 15:33:33 | - |
| Mercury Hg (Mar 21, 2011 prototype) | 21 March 2011 | Xbox 360 | Puzzle | 16 August 2023 15:46:18 | - |
| Mercury Meltdown Revolution (Prototype) | Nintendo Wii | Puzzle-platform | 25 December 2022 23:23:55 | - | |
| Merv Griffin's Crosswords (May 15, 2008 prototype) | 15 May 2008 | Xbox 360 | Puzzle | 26 August 2023 01:00:47 | - |
| Merv Griffin's Crosswords (Sep 26, 2008 prototype) | 26 September 2008 | Xbox 360 | Puzzle | 16 August 2023 13:56:31 | - |
| Metal Arms: Glitch in the System (Aug 7, 2003 prototype) | 7 August 2003 07:21:49 | Xbox | Third-Person Shooter | 18 September 2021 22:03:11 | - |
| Metal Arms: Glitch in the System (May 2, 2003 prototype) | 2 May 2003 | Xbox | Action | 19 November 2016 23:25:41 | - |
| Metal Dungeon (Sep 27, 2002 prototype) | 27 September 2002 15:07:17 | Xbox | RPG | 18 September 2021 22:02:20 | - |
| Metal Gear Rising: Revengeance (Oct 23, 2012 Demo) | 23 October 2012 13:59:26 | Xbox 360 | Action | 28 April 2024 10:45:44 | - |
| Metal Gear Rising: Revengeance (Sep 24, 2012 prototype) | 24 September 2012 07:32:36 | Xbox 360 | Action | 25 September 2023 21:08:08 | - |
| Metal Gear Rising: Revengeance (Taikenban Demo) | PlayStation 3 | Action-adventure, hack and slash | 9 April 2024 17:05:18 | - | |
| Metal Gear Solid (Apr 27, 1998 Pilot Disc) | 27 April 1998 10:49:58 | PlayStation | Action | 17 August 2017 18:02:42 | - |
| Metal Gear Solid (Jun 17, 1998 Pilot Disc) | 17 June 1998 16:48:28 | PlayStation | Action | 17 August 2017 18:03:36 | - |
| Metal Gear Solid 2: Sons of Liberty - Trial Edition (Feb 7, 2001 prototype) | 7 February 2001 15:19:04 | PlayStation 2 | Stealth | 20 March 2021 23:52:43 | - |
| Metal Gear Solid: Peace Walker (Dec 16, 2009 demo) | 16 December 2009 | PlayStation Portable | Shooter, Action-Adventure | 25 March 2024 08:18:58 | - |
| Metal Gear Solid: Portable Ops (Dec 29, 2006 prototype) | 29 December 2006 15:28:25 | PlayStation Portable | Action, Strategy, Shooter | 16 December 2023 22:01:18 | - |
| Metal Gear Solid: Portable Ops (Feb 6, 2007 prototype) | 6 February 2007 14:44:02 | PlayStation Portable | Action | 1 August 2017 20:33:46 | - |
| Metal Gear Solid: Portable Ops (demo) | PlayStation Portable | Action, Strategy, Shooter | 25 March 2024 08:27:35 | - | |
| Metal Gear Solid: The Twin Snakes (Debug prototype) | Nintendo GameCube | Action | 3 August 2017 19:53:19 | - | |
| Metal Gear Solid: VR Missions (Jun 21, 1999 prototype) | 21 June 1999 15:32:56 | PlayStation | Action | 17 April 2021 21:23:28 | - |
| Metal Head (Dec 13, 1994 prototype) | 13 December 1994 13:46:24 | Sega 32X | First Person Shooter | 16 June 2016 03:19:28 | - |
| Metal Head (Dec 14, 1994 prototype) | 14 December 1994 17:46:56 | Sega 32X | First Person Shooter | 16 June 2016 03:20:38 | - |
| Metal Head (Dec 2, 1994 prototype) | 2 December 1994 19:39:46 | Sega 32X | First Person Shooter | 2 May 2016 16:44:55 | - |
| Metal Head (Dec 20, 1994 prototype) | 20 December 1994 11:17:38 | Sega 32X | First Person Shooter | 16 June 2016 03:31:05 | - |
| Metal Head (Dec 7, 1994 prototype B) | 7 December 1994 21:26:22 | Sega 32X | First Person Shooter | 2 May 2016 16:49:43 | - |
| Metal Head (Dec 7, 1994 prototype) | 7 December 1994 13:35:50 | Sega 32X | First Person Shooter | 2 May 2016 16:50:22 | - |
| Metal Head (Dec 9, 1994 prototype) | 9 December 1994 19:57:54 | Sega 32X | First Person Shooter | 16 June 2016 03:17:09 | - |
| Metal Head (Nov 14, 1994 prototype) | 14 November 1994 21:42:48 | Sega 32X | First Person Shooter | 16 June 2016 03:31:15 | - |
| Metal Head (Nov 21, 1994 prototype) | 22 November 1994 21:03:18 | Sega 32X | First Person Shooter | 16 June 2016 03:38:45 | - |
| Metal Head (Nov 28, 1994 prototype) | 28 November 1994 22:46:36 | Sega 32X | First Person Shooter | 16 June 2016 04:17:15 | - |
| Metal Jack (Early Localization Prototype) | SNES | Action | 25 May 2021 13:21:45 | ✓ | |
| Metal Jack (Jul 30, 1992 prototype) | 30 July 1992 | SNES | Action | 22 November 2016 21:09:13 | ✓ |
| Metal Masters (Prototype) | Game Boy | Action | 1 January 2022 20:43:18 | - | |
| Metal Max (prototype) | NES | Role-playing | 26 March 2022 19:53:31 | - | |
| Metal Saga (May 17, 2005 prototype) | 17 May 2005 11:57:05 | PlayStation 2 | Role-playing | 20 March 2021 23:41:42 | - |
| Metal Slug - 2nd Mission (Trial) | Neo Geo Pocket Color | 10 January 2017 10:44:50 | - | ||
| Metal Slug 3 (Nov 13, 2007 prototype) | 13 November 2007 | Xbox 360 | Action | 16 August 2023 15:35:58 | - |
| Metal Slug 3 (Unknow prototype) | Xbox 360 | Action, Shooter | 15 December 2023 20:26:34 | - | |
| Metal Slug 4 (Mar 12, 2005 prototype) | 12 March 2005 10:14:44 | PlayStation 2 | Action - Arcade | 20 March 2021 23:47:50 | - |
| Metal Slug 5 (Mar 11, 2005 prototype) | 11 March 2005 17:51:47 | PlayStation 2 | Action - Arcade | 20 March 2021 23:45:36 | - |
| Metal Slug Advance (Prototype) | Game Boy Advance | Run and gun | 4 June 2020 04:45:59 | - | |
| Metal Slug Anthology (Apr 17, 2007 prototype) | 17 April 2007 02:35:00 | PlayStation 2 | Action, Shooter, Compilation | 10 October 2023 16:16:03 | - |
| Metal Slug XX (Dec 15, 2009 prototype) | 15 December 2009 06:04:29 | Xbox 360 | Shoot Em Up | 19 April 2024 05:49:40 | - |
| Metal Slug XX (Feb 10, 2010 prototype) | 10 February 2010 | Xbox 360 | Shoot Em Up | 26 August 2023 00:56:13 | - |
| Metal Slug XX (Sep 26, 2009 prototype) | 26 September 2009 | PlayStation Portable | Action | 16 February 2023 00:38:10 | - |
| Metal Slug: Super Vehicle-001 (Prototype) | Game Boy Advance | Run and gun | 4 June 2020 04:57:57 | ✓ | |
| Metal Wolf Chaos (Debug Executables prototype) | Xbox | Action, Adventure, Shooter | 7 November 2023 21:00:20 | - | |
| Metalocalypse: Dethgame (Aug 22, 2009 prototype) | 22 August 2009 | Xbox 360 | 16 September 2023 20:40:40 | ✓ | |
| Meteos (Apr 28, 2005 prototype) | 28 April 2005 | Nintendo DS | Puzzle | 10 August 2021 17:28:23 | - |
| Meteos (Jan 19, 2005 prototype) | 19 January 2005 | Nintendo DS | Puzzle | 4 March 2023 05:08:27 | - |
| Meteos Wars (Sep 11, 2008 prototype) | 11 September 2008 03:57:03 | Xbox 360 | Puzzle | 1 March 2023 20:03:24 | - |
| Metro 2033 (May 10, 2006 prototype) | 10 May 2006 | PC | First Person Shooter | 20 January 2023 23:05:01 | - |
| Metro: Last Light (Oct 15, 2012 prototype) | 15 October 2012 15:22:53 | Xbox 360 | First Person Shooter | 25 September 2023 21:12:29 | - |
| Metroid Fusion (Sep 11, 2002 prototype - Debug) | 11 September 2002 | Game Boy Advance | Action | 7 December 2016 23:12:56 | - |
| Metroid Fusion (Sep 16, 2002 prototype - Debug) | 16 September 2002 | Game Boy Advance | Action | 7 December 2016 23:13:39 | - |
| Metroid Prime 3: Corruption (Mar 2, 2006 prototype - Debug) | 2 March 2006 14:55:13 | Nintendo GameCube | FPS | 7 December 2016 23:22:02 | - |
| Metroid: Zero Mission (Dec 5, 2003 prototype - Debug) | 5 December 2003 11:57:00 | Game Boy Advance | Action | 7 December 2016 23:08:24 | - |
| Metroid: Zero Mission (Jan 16, 2004 prototype - Debug) | 16 January 2004 16:56:00 | Game Boy Advance | Action | 7 December 2016 23:09:36 | - |
| Metropolis Crimes (Sep 21, 2009 prototype) | 21 September 2009 | PlayStation 3 | Adventure | 7 February 2024 11:06:36 | ✓ |
| Metropolis Crimes (Sep 28, 2009 prototype) | 28 September 2009 | PlayStation 3 | Adventure | 7 February 2024 12:04:46 | ✓ |
| Metropolis Street Racer (Oct 10, 2000 prototype) | 10 October 2000 | Dreamcast | Racing | 12 April 2020 16:35:06 | - |
| Mezase Pachi Pro: Pachio-kun (prototype) | NES | Pachinko | 9 January 2024 14:00:50 | - | |
| Michael Jackson's Moonwalker (Apr 24, 1990) | 24 April 1990 | Sega Mega Drive | Action | 7 August 2018 23:22:42 | - |
| Michael Jackson's Moonwalker (Build) | Sega Master System | Action | 29 November 2016 06:33:08 | - | |
| Mickey & Minnie Magical Adventure 2: The Great Circus Mystery (Prototype) | SNES | Platformer | 7 December 2016 20:01:45 | - | |
| Mickey Mania: The Timeless Adventures of Mickey Mouse (Aug 25, 1994 prototype) | 25 August 1994 10:47:00 | Sega CD | Action Adventure | 3 May 2016 01:40:36 | - |
| Mickey Mania: The Timeless Adventures of Mickey Mouse (Japanese localization prototype) | SNES | Action Adventure | 8 October 2017 16:25:33 | - | |
| Mickey Mania: The Timeless Adventures of Mickey Mouse (Jul 18, 1994 prototype) | 18 July 1994 | SNES | Adventure | 4 January 2019 08:59:36 | - |
| Mickey Mania: The Timeless Adventures of Mickey Mouse (Jul 1994 prototype) | Sega Mega Drive | Action | 25 February 2017 21:24:14 | - | |
| Mickey Mania: The Timeless Adventures of Mickey Mouse (Sep 1994 prototype) | Sega Mega Drive | Action | 25 February 2017 21:40:22 | - | |
| Mickey's Adventures in Numberland (Prototype) | NES | Educational | 7 April 2023 14:23:49 | - | |
| Mickey's Blast Into the Past (Aug 1, 1994 prototype) | 1 August 1994 15:56:30 | Sega Pico | Educational | 16 June 2016 05:31:25 | - |
| Mickey's Blast Into the Past (Aug 9, 1994 prototype) | 9 August 1994 15:15:52 | Sega Pico | Educational | 16 June 2016 05:31:32 | - |
| Mickey's Blast Into the Past (Jul 21, 1994 prototype) | 22 July 1994 18:55:30 | Sega Pico | Educational | 16 June 2016 05:31:38 | - |
| Mickey's Blast Into the Past (Jul 23, 1994 prototype) | 23 July 1994 14:25:16 | Sega Pico | Educational | 16 June 2016 05:31:46 | - |
| Mickey's Blast Into the Past (Jul 25, 1994 prototype) | 25 July 1994 13:32:50 | Sega Pico | Educational | 16 June 2016 05:31:54 | - |
| Mickey's Blast Into the Past (Jun 8, 1994 prototype) | 8 June 1994 21:16:34 | Sega Pico | Educational | 16 June 2016 05:47:37 | - |
| Mickey's Playtown Adventure: A Day Of Discovery! (Prototype) | SNES | Educational | 2 February 2019 00:56:53 | ✓ | |
| Mickey's Ultimate Challenge (Nov 12, 1993 prototype) | 12 November 1993 | Game Boy | Action | 1 January 2022 20:48:08 | - |
| Micky's Lustiges Abenteurer (Prototype) | Sega Pico | 10 January 2017 06:18:12 | ✓ | ||
| Micro Machines (Dec 12, 2002 prototype) | 12 December 2002 15:39:19 | Xbox | Racing | 18 September 2021 21:36:25 | - |
| Micro Machines (Mar 21, 1995 prototype) | 21 March 1995 15:09:55 | Philips CD-i | Reference | 17 April 2021 20:58:07 | - |
| Micro Machines (Oct 22, 1993 prototype) | 22 October 1993 | Game Gear | Racing | 30 March 2019 23:34:49 | - |
| Micro Machines 2: Turbo Tournament (Prototype) | Sega Mega Drive | Racing | 1 January 2022 20:41:18 | - | |
| Micro Machines V3 (Oct 10, 1997 prototype) | 10 October 1997 14:26:04 | PlayStation | Racing | 17 April 2021 21:18:27 | - |
| Micro Machines V4 (May 24, 2006 prototype) | 24 May 2006 | PlayStation 2 | Racing | 25 September 2018 02:17:26 | - |
| Microsoft Casino 2002 (February 16, 2001 prototype) | 9 February 2001 | PC | Gambling | 22 April 2023 22:37:59 | ✓ |
| Microsoft Combat Flight Simulator: WWII Europe Series (Aug 11, 1999 prototype) | 11 August 1999 | Dreamcast | Flight Simulator | 28 August 2019 03:02:31 | ✓ |
| Microsoft Combat Flight Simulator: WWII Europe Series (Aug 8, 2000 prototype) | 8 August 2000 | Dreamcast | Flight Simulator | 28 August 2019 02:59:16 | ✓ |
| Microsoft Combat Flight Simulator: WWII Europe Series (Jul 30, 1999 prototype) | 30 July 1999 | Dreamcast | Flight Simulator | 28 August 2019 03:04:48 | ✓ |
| Microsoft Combat Flight Simulator: WWII Europe Series (Nov 3, 1999 prototype) | 3 November 1999 | Dreamcast | Flight Simulator | 28 August 2019 03:03:40 | ✓ |
| Microsoft Combat Flight Simulator: WWII Europe Series (Nov 5, 1999 prototype) | 5 November 1999 | Dreamcast | Flight Simulator | 28 August 2019 03:00:12 | ✓ |
| Microsoft Combat Flight Simulator: WWII Europe Series (Oct 5, 1999 prototype) | 5 October 1999 | Dreamcast | Flight Simulator | 28 August 2019 03:05:44 | ✓ |
| Microsoft Combat Flight Simulator: WWII Europe Series (Sep 27, 2000 prototype) | 27 September 2000 | Dreamcast | Flight Simulator | 28 August 2019 03:01:02 | ✓ |
| Microsoft Flight Simulator X (Aug 13, 2006 prototype) | 13 August 2006 | PC | Flight Simulation | 8 March 2024 04:51:27 | - |
| Microsoft Flight Simulator X (May 16, 2006 prototype) | 16 May 2006 | PC | Flight Simulation | 8 March 2024 04:51:30 | - |
| Midnight Club II (Mar 11, 2003 prototype) | 11 March 2003 19:11:20 | PlayStation 2 | Racing Simulation | 20 March 2021 23:38:58 | - |
| Midnight Club: Street Racing (Oct 17, 2000 prototype) | 17 October 2000 16:06:54 | PlayStation 2 | Racing | 4 September 2020 00:22:44 | - |
| Midnight Club: Street Racing (Sep 22, 2000 prototype) | 22 September 2000 03:48:30 | PlayStation 2 | Racing | 20 March 2021 23:57:56 | - |
| Midtown Madness 3 (Feb 17, 2003 prototype) | 17 February 2003 17:44:05 | Xbox | 5 January 2023 06:10:27 | - | |
| Midtown Madness 3 (Feb 24, 2003 prototype) | 24 February 2003 11:40:56 | Xbox | Racing | 2 July 2020 05:49:16 | - |
| Midtown Madness 3 (Feb 28, 2003 prototype) | 28 February 2003 | Xbox | Racing | 3 August 2017 19:47:04 | - |
| Midtown Madness 3 (May 5, 2003 prototype) | 5 May 2003 | Xbox | Racing | 5 January 2023 05:34:58 | - |
| Midway Arcade Treasures (Oct 5, 2003 prototype) | 5 October 2003 23:38:10 | PlayStation 2 | Compilation | 20 March 2021 23:59:09 | - |
| Midway Arcade Treasures (Sep 23, 2003 prototype) | 23 September 2003 01:47:27 | Xbox | Arcade Compilation | 18 September 2021 22:00:00 | - |
| Midway Arcade Treasures 2 (Aug 20, 2004 prototype) | 20 August 2004 02:36:08 | PlayStation 2 | Compilation | 20 March 2021 23:59:31 | - |
| Midway Arcade Treasures 2 (Aug 24, 2004 prototype) | 24 August 2004 15:12:37 | PlayStation 2 | Collection | 17 September 2020 04:38:56 | - |
| Midway Arcade Treasures 2 (Jul 28, 2004 prototype) | 28 July 2004 04:05:32 | PlayStation 2 | Compilation | 20 March 2021 23:55:02 | - |
| Midway Arcade Treasures 2 (Jul 30, 2004 prototype) | 30 July 2004 04:48:15 | Xbox | Arcade Compilation | 18 September 2021 21:34:41 | - |
| Midway Arcade Treasures 3 (Jul 5, 2005 prototype) | 5 July 2005 | Nintendo GameCube | Compilation, Racing | 13 February 2023 20:31:47 | - |
| Midway Arcade Treasures 3 (May 10, 2005 prototype) | 10 May 2005 05:19:11 | Xbox | Compilation | 13 May 2021 20:39:50 | - |
| Might and Magic II: Gates to Another World (Unreleased US Prototype A) | SNES | RPG | 15 September 2018 00:01:30 | ✓ | |
| Might and Magic II: Gates to Another World (Unreleased US Prototype B) | SNES | RPG | 15 June 2021 21:56:23 | ✓ | |
| Might and Magic III: Isles of Terra (Prototype) | SNES | RPG | 28 March 2023 18:12:41 | - | |
| Might and Magic IX (Late 2001 Prototype) | PC | Role-playing | 25 May 2020 10:46:33 | - | |
| Might and Magic VII: For Blood and Honor (Mar 24, 1999 prototype) | 24 March 1999 | PC | 17 September 2022 22:03:58 | - | |
| Might and Magic VII: For Blood and Honor (May 27, 1999 prototype) | 27 May 1999 | PC | 17 September 2022 22:49:05 | - | |
| Mighty Max (Demo) | SNES | Action | 22 January 2017 23:07:05 | - | |
| Mighty Morphin Power Rangers (Aug 10, 1994 prototype) | 10 August 1994 05:17:30 | Sega Mega Drive | Beatem Up | 16 June 2016 15:40:01 | - |
| Mighty Morphin Power Rangers (Aug 26, 1994 prototype) | 26 August 1994 21:09:30 | Game Gear | Fighting (2D) | 16 June 2016 07:19:54 | - |
| Mighty Morphin Power Rangers (Aug 4, 1994 prototype) | 4 August 1994 04:58:28 | Sega Mega Drive | Beatem Up | 16 June 2016 15:39:32 | - |
| Mighty Morphin Power Rangers (Aug 8, 1994 prototype) | 8 August 1994 05:35:44 | Sega Mega Drive | Beatem Up | 16 June 2016 15:39:40 | - |
| Mighty Morphin Power Rangers (Aug 9, 1994 prototype B) | 10 August 1994 11:25:42 | Sega Mega Drive | Beatem Up | 16 June 2016 15:39:47 | - |
| Mighty Morphin Power Rangers (Aug 9, 1994 prototype) | 9 August 1994 04:23:18 | Sega Mega Drive | Beatem Up | 16 June 2016 15:39:54 | - |
| Mighty Morphin Power Rangers (Jul 16, 1994 prototype) | 16 July 1994 12:22:12 | Game Gear | Fighting (2D) | 16 June 2016 07:20:01 | - |
| Mighty Morphin Power Rangers (Jul 18, 1994 prototype) | 20 July 1994 05:38:12 | Sega Mega Drive | Beatem Up | 16 June 2016 15:40:15 | - |
| Mighty Morphin Power Rangers (Jul 8, 1994 prototype) | 11 July 1994 09:34:08 | Sega Mega Drive | Beatem Up | 16 June 2016 15:40:08 | - |
| Mighty Morphin Power Rangers (Prototype) | Game Boy | Action | 1 January 2022 20:41:29 | - | |
| Mighty Morphin Power Rangers (Sep 5, 1994 prototype) | 6 September 1994 11:32:32 | Sega Mega Drive | Beatem Up | 16 June 2016 15:40:22 | - |
| Mighty Morphin Power Rangers - The Movie (Jul 13, 1995 prototype) | 7 July 1995 12:41:30 | Sega Mega Drive | Beatem Up | 16 June 2016 15:40:30 | - |
| Mighty Morphin Power Rangers - The Movie (Jul 17, 1995 prototype) | 17 July 1995 21:47:06 | Sega Mega Drive | Beatem Up | 16 June 2016 15:40:37 | - |
| Mighty Morphin Power Rangers - The Movie (Jul 22, 1995 prototype) | 21 July 1995 23:11:02 | Sega Mega Drive | Beatem Up | 16 June 2016 15:40:46 | - |
| Mighty Morphin Power Rangers - The Movie (Jul 24, 1995 prototype) | 24 July 1995 07:06:00 | Sega Mega Drive | Beatem Up | 16 June 2016 15:40:52 | - |
| Mighty Morphin Power Rangers - The Movie (Jul 25, 1995 prototype) | 25 July 1995 05:16:50 | Sega Mega Drive | Beatem Up | 16 June 2016 15:41:00 | - |
| Mighty Morphin Power Rangers - The Movie (May 30, 1995 prototype) | 31 May 1995 07:13:18 | Game Gear | Fighting (2D) | 16 June 2016 07:20:08 | - |
| Mighty No. 9 (Aug 14, 2014 Prototype) | 14 August 2014 16:57:55 | PC | Action | 20 April 2024 21:26:21 | - |
| Mighty No. 9 (Jun 14, 2015 prototype) | 14 June 2015 | Xbox 360 | Action | 16 August 2023 16:04:05 | - |
| Mighty Switch Force (Dec 1, 2011 Wii prototype) | 1 December 2011 20:50:31 | Nintendo Wii | Platformer | 25 March 2024 00:44:30 | ✓ |
| Mike Ditka's Big Play Football (Prototype) | NES | Sports - Football | 1 January 2022 20:38:25 | ✓ | |
| Mike Tyson Heavyweight Boxing (Feb 5, 2002 prototype) | 5 February 2002 16:10:00 | PlayStation 2 | Fighting | 25 June 2020 16:37:07 | - |
| Mike Tyson's Intergalactic Power Punch (June 1991 CES prototype) | 31 May 1991 | 15 April 2022 19:58:51 | - | ||
| Mile High Pinball (Jul 8, 2005 prototype) | 8 July 2005 | N-Gage | Pinball | 10 August 2017 18:41:38 | - |
| Military Madness: Nectaris (Aug 7, 2009 prototype) | 7 August 2009 | Xbox 360 | Strategy | 29 October 2023 12:41:37 | - |
| Millennium Racer: Y2K Fighters (Jun 4, 2001 prototype) | 4 June 2001 20:37:34 | Dreamcast | Racing | 14 March 2017 05:47:03 | ✓ |
| Millennium Soldier: Expendable (Oct 12, 1999 prototype) | 12 October 1999 17:31:52 | PlayStation | Action | 17 April 2021 21:19:58 | - |
| Millipede (Namco prototype) | NES | Shoot 'em up | 16 May 2023 02:01:03 | ✓ | |
| Milo and Kate (Jun 11, 2011 internal prototype) | 11 June 2011 | Xbox 360 | 23 November 2023 03:35:36 | ✓ | |
| Milon's Secret Castle (Prototype) | NES | 20 May 2018 00:34:29 | - | ||
| Mind Bender (Mar 4, 1991 prototype) | 4 March 1991 | Game Boy | Action | 1 January 2022 20:48:27 | - |
| Mind Quest (Aug 3, 1993 prototype) | 3 August 1993 | Philips CD-i | 6 June 2019 20:03:32 | - | |
| MindRover: The Europa Project (Aug 23, 1999 prototype) | 23 August 1999 | PC | Strategy, Educational | 18 March 2024 19:10:40 | - |
| Minecraft (February 3, 2010 prototype) | 3 February 2010 00:30:44 | PC | 29 September 2017 01:07:45 | - | |
| Minecraft (Mar 16, 2011 PC Gamer Demo) | 16 March 2011 21:00:34 | PC | Action-Adventure | 7 March 2024 15:28:49 | - |
| Minecraft: Xbox 360 Edition (Feb 1, 2012 prototype) | 1 February 2012 | Xbox 360 | Action | 16 August 2023 15:33:44 | - |
| Minecraft: Xbox 360 Edition (Jan 27, 2012 prototype) | 27 January 2012 | Xbox 360 | Action | 16 August 2023 16:06:35 | - |
| Minecraft: Xbox 360 Edition (Mar 23, 2012 prototype) | 23 March 2012 | Xbox 360 | Action | 16 August 2023 16:02:48 | - |
| Minesweeper Flags (Nov 18, 2009 prototype) | 18 November 2009 | Xbox 360 | Strategy, Puzzle | 29 October 2023 15:04:22 | - |
| Mini Ninjas (May 25, 2009 prototype) | 25 May 2009 | Xbox 360 | Action-adventure | 25 December 2022 23:38:19 | - |
| Mini Racers (Prototype) | Nintendo 64 | Racing | 7 December 2016 22:01:35 | ✓ | |
| Minority Report: Everybody Runs (Oct 21, 2002 prototype) | 21 October 2002 07:37:39 | Xbox | Beat-Em-Up, Third-Person Shooter | 18 September 2021 21:42:17 | - |
| Minority Report: Everybody Runs (Sep 5, 2002 prototype) | 5 September 2002 20:51:56 | PlayStation 2 | Third Person Shooter | 20 March 2021 23:30:16 | - |
| Minute to Win It (Nov 17, 2011 prototype) | 17 November 2011 15:33:48 | Xbox 360 | Misc | 25 September 2023 21:17:08 | - |
| Miracle Warriors: Seal of the Dark Lord (Feb 25, 1988 prototype) | 25 February 1988 | Sega Master System | Role Playing | 11 March 2017 09:43:23 | - |
| Mirage (Jul 16, 2004 prototype) | 16 July 2004 02:23:21 | PlayStation 2 | 28 May 2019 17:21:39 | ✓ | |
| Mirror's Edge (Feb 7, 2008 prototype) | 7 February 2008 | PlayStation 3 | Action-adventure, Platform | 10 April 2023 17:13:27 | - |
| Mirror's Edge (Sep 13, 2008 prototype) | 13 September 2008 | Xbox 360 | Action-adventure, Platform, | 25 December 2022 23:38:26 | - |
| Mirror's Edge (Sep 29, 2008 prototype) | 29 September 2008 00:00:00 | Xbox 360 | Action Adventure | 25 September 2023 20:37:56 | - |
| Missile Command (Aug 12, 1999 prototype) | 12 August 1999 16:00:00 | PlayStation | Action | 22 November 2016 20:10:40 | - |
| Missile Command (May 30, 2007 prototype) | 30 May 2007 | Xbox 360 | Shoot 'Em Up | 29 October 2023 15:07:47 | - |
| Missile Command VR (Jul 5, 1995 prototype) | 5 July 1995 | Atari Jaguar | Shooter | 1 November 2016 21:42:21 | ✓ |
| Mission: Impossible (Prototype) | Nintendo 64 | Action | 26 June 2021 13:47:08 | - | |
| Mission: Impossible - Operation Surma (Aug 23, 2003 prototype) | 23 August 2003 01:09:26 | PlayStation 2 | Action Adventure | 19 April 2021 17:11:02 | - |
| Mission: Impossible - Operation Surma (Sep 11, 2003 prototype) | 11 September 2003 23:09:26 | PlayStation 2 | Action Adventure | 20 March 2021 23:43:08 | - |
| Mission: Impossible - Operation Surma (Sep 12, 2003 prototype) | 12 September 2003 04:01:21 | Xbox | Action-Adventure, Stealth | 18 September 2021 21:44:43 | - |
| Missle Defense 3-D (Prototype) | Sega Master System | Shooter | 6 October 2018 13:50:47 | - | |
| Mob Rule (Jun 17, 1999 prototype) | 17 June 1999 | PC | Real-time strategy | 17 August 2023 13:26:07 | - |
| Mobil 1 Rally Championship (Jan 7, 2000 prototype) | 7 January 2000 13:20:30 | PlayStation | Racing | 17 April 2021 21:22:55 | - |
| Mobile Suit Gundam Gundam vs Zeta Gundam (Feb 21, 2005 prototype) | 21 February 2005 15:27:50 | PlayStation 2 | Fighting | 20 March 2021 23:43:38 | - |
| Mobile Suit Gundam: Encounters in Space (Oct 3, 2003 prototype) | 3 October 2003 06:20:50 | PlayStation 2 | Vehicular Combat | 20 March 2021 23:39:31 | - |
| Mobile Suit Gundam: Journey to Jaburo (May 17, 2001 prototype) | 17 May 2001 18:31:48 | PlayStation 2 | Vehicular Combat | 20 March 2021 23:51:28 | - |
| Mobile Suit Gundam: Zeonic Front (Jul 5, 2001 prototype) | 5 July 2001 19:41:39 | PlayStation 2 | Vehicular Combat | 20 March 2021 23:56:11 | - |
| ModNation Racers (Apr 6, 2010 prototype) | 6 April 2010 | PlayStation 3 | Driving/Racing, Vehicular Combat | 18 May 2024 10:50:58 | - |
| ModNation Racers (Feb 28, 2010 prototype) | 28 February 2010 | PlayStation 3 | Driving/Racing, Vehicular Combat | 26 February 2024 17:39:52 | - |
| ModNation Racers (May 2, 2010 prototype) | 2 May 2010 18:29:00 | PlayStation 3 | Driving/Racing, Vehicular Combat | 20 February 2024 11:48:34 | - |
| Modi i Nanna: Sprytne Smyki (Aug 27, 2002 demo) | 27 August 2002 04:00:00 | PC | Platformer | 21 January 2019 21:16:37 | - |
| Moero!! Junior Basket: Two on Two (Prototype) | NES | Sports - Basketball | 1 January 2022 20:38:45 | - | |
| Momma Can I Mow the Lawn? (Feb 24, 2004 prototype) | 24 February 2004 | Xbox | 20 February 2022 17:37:49 | ✓ | |
| Monaco Grand Prix (Jan 6, 1999 prototype) | 6 January 1999 20:04:58 | Dreamcast | Racing | 13 January 2017 19:24:46 | - |
| Monaco Grand Prix: Racing Simulation 2 (Mar 28, 1999 demo) | 28 March 1999 | PlayStation | Racing | 21 January 2019 12:57:06 | - |
| Monaco: What's Yours is Mine (Mar 8, 2013 prototype) | 8 March 2013 | Xbox 360 | Adventure | 26 August 2023 00:58:28 | - |
| Monday Night Combat (Aug 18, 2010 prototype) | 18 August 2010 | Xbox 360 | Shooter | 16 September 2023 20:56:04 | - |
| Monday Night Combat (Aug 20, 2010 prototype) | 20 August 2010 | Xbox 360 | Action | 16 August 2023 15:35:19 | - |
| Monday Night Combat (Aug 25, 2010 prototype) | 25 August 2010 | Xbox 360 | Action | 16 August 2023 15:36:01 | - |
| Monday Night Combat (Aug 3, 2010 prototype) | 3 August 2010 | Xbox 360 | Action | 16 August 2023 15:42:05 | - |
| Monday Night Combat (Aug 31, 2010 prototype) | 31 August 2010 18:14:53 | Xbox 360 | Action | 16 August 2023 16:02:45 | - |
| Monday Night Combat (Dec 3, 2010 prototype) | 3 December 2010 | Xbox 360 | Action | 16 August 2023 15:35:21 | - |
| Monday Night Combat (May 10, 2011 prototype) | 10 May 2011 | Xbox 360 | Action | 16 August 2023 15:28:51 | - |
| Monday Night Combat (Nov 1, 2010 prototype) | 1 November 2010 | Xbox 360 | Third-person shooter | 1 July 2019 01:18:46 | - |
| Monday Night Combat (Nov 16, 2010 prototype) | 16 November 2010 | Xbox 360 | Third Person Shooter | 26 August 2023 00:56:11 | - |
| Monday Night Combat (Nov 22, 2010 prototype) | 22 November 2010 | Xbox 360 | Action | 16 August 2023 15:42:31 | - |
| Monday Night Combat (Nov 24, 2010 prototype) | 24 November 2010 10:24:01 | Xbox 360 | Action | 16 August 2023 15:41:56 | - |
| Monday Night Combat (Nov 9, 2010 prototype) | 9 November 2010 | Xbox 360 | Action | 16 August 2023 15:27:00 | - |
| Monday Night Combat (Oct 18, 2010 Prototype) | 18 October 2010 | Xbox 360 | Shooter | 16 September 2023 21:24:25 | - |
| Monday Night Combat (Oct 19, 2010 prototype) | 19 October 2010 | Xbox 360 | Action | 1 July 2019 01:17:19 | - |
| Monday Night Combat (Oct 22, 2010 prototype) | 22 October 2010 18:00:29 | Xbox 360 | Action | 16 August 2023 16:04:56 | - |
| Monday Night Combat (Oct 24, 2010 prototype) | 24 October 2010 | Xbox 360 | Third-person shooter | 1 July 2019 01:17:49 | - |
| Monday Night Combat (Oct 26, 2010 prototype) | 26 October 2010 | Xbox 360 | Action | 16 August 2023 15:35:06 | - |
| Monday Night Combat (Oct 5, 2010 prototype) | 5 October 2010 | Xbox 360 | Third-person shooter | 25 July 2023 22:31:02 | - |
| Monday Night Combat (Sep 1, 2010 prototype) | 1 September 2010 | Xbox 360 | Action | 16 August 2023 15:40:44 | - |
| Monday Night Combat (Sep 28, 2010 prototype) | 28 September 2010 | Xbox 360 | Third Person Shooter | 26 August 2023 00:50:36 | - |
| Monday Night Combat (Sep 3, 2010 prototype) | 3 September 2010 | Xbox 360 | Action | 16 August 2023 15:28:46 | - |
| Mondu's Fight Palace (Jul 3, 1990 prototype) | 3 July 1990 18:05:48 | Sega Mega Drive | Fighter | 2 May 2016 19:52:56 | - |
| Mong (Oct 23, 2009 prototype) | 23 October 2009 | PlayStation 3 | 10 February 2024 21:08:50 | ✓ | |
| Monkey Academy (ColecoVision prototype) | ColecoVision | Educational | 19 May 2023 13:36:19 | - | |
| Monkey Academy (May 11, 1984 prototype) | 11 May 1984 | ColecoVision | Educational | 19 May 2023 13:47:08 | - |
| Monkey Hero (Nov 30, 1998 prototype) | 30 November 1998 10:59:30 | PlayStation | 7 March 2024 19:34:31 | - | |
| Monkey Island: Special Edition Collection (Jun 23, 2009 prototype) | 23 June 2009 | Xbox 360 | Adventure, Compilation | 29 October 2023 15:39:43 | - |
| Monopoly (Apr 22, 1988 prototype) | 22 April 1988 | Sega Master System | Board game | 2 April 2023 18:32:44 | - |
| Monopoly (Sega Master System prototype) | Sega Master System | Board game | 11 March 2017 09:45:17 | - | |
| Monopoly Party (Jul 29, 2002 16.25 prototype) | 29 July 2002 16:25:31 | Xbox | Party | 18 September 2021 21:56:46 | - |
| Monopoly Party (Jul 29, 2002 prototype) | 29 July 2002 16:01:30 | PlayStation 2 | Party | 20 March 2021 23:36:38 | - |
| Monopoly Plus (Jun 27, 2014 prototype) | 27 June 2014 | Xbox 360 | Card game | 16 August 2023 15:42:29 | - |
| Monopoly Streets (Jul 7, 2010 prototype) | 7 July 2010 08:14:53 | Xbox 360 | Board Game, Strategy | 29 December 2022 10:47:02 | - |
| Monster High Skultimate Roller Maze (prototype) | Nintendo DS | Driving/Racing, Vehicular Combat | 25 March 2024 10:39:00 | - | |
| Monster House (Apr 15, 2006 prototype) | 15 April 2006 17:51:00 | PlayStation 2 | Survival Horror | 24 June 2020 22:05:49 | - |
| Monster Hunter (Aug 13, 2004 prototype) | 13 August 2004 02:14:54 | PlayStation 2 | 27 February 2021 15:46:19 | - | |
| Monster Hunter (Dec 27, 2004 demo) | 27 December 2004 00:06:39 | PlayStation 2 | 27 February 2021 16:09:24 | - | |
| Monster Hunter (May 21, 2004 prototype) | 21 May 2004 03:30:17 | PlayStation 2 | 27 February 2021 15:46:16 | - | |
| Monster Hunter Freedom Unite (Apr 21, 2009 demo) | 21 April 2009 05:15:00 | PlayStation Portable | Action, Role-Playing | 25 March 2024 08:34:37 | - |
| Monster Hunter Freedom Unite (Jan 29, 2009 prototype) | 29 January 2009 | PlayStation Portable | Action | 16 February 2023 00:38:02 | - |
| Monster Hunter Portable 3rd (Oct 14, 2010 demo) | 14 October 2010 04:18:00 | PlayStation Portable | Role-Playing, Action-Adventure | 25 March 2024 08:51:55 | - |
| Monster Jam: Maximum Destruction (Dec 20, 2001 prototype) | 20 December 2001 13:23:16 | PlayStation 2 | Racing | 20 March 2021 23:51:06 | - |
| Monster Madness: Battle for Suburbia (Mar 13, 2007 Prototype) | March 13 JL | Xbox 360 | SMUP | 28 May 2023 16:49:19 | - |
| Monster Madness: Battle for Suburbia (Nov 24, 2006 prototype) | 24 November 2006 11:01:55 | Xbox 360 | Shoot Em Up | 25 September 2023 21:05:03 | - |
| Monster Max (Apr 1, 1993 prototype) | 1 April 1993 | Game Boy | Action | 1 January 2022 23:42:57 | - |
| Monster Rancher (Aug 6, 1997 prototype) | 6 August 1997 15:29:16 | PlayStation | Strategy | 17 April 2021 21:20:15 | - |
| Monster Rancher (Sep 19, 1997 prototype) | 19 September 1997 18:06:10 | PlayStation | Strategy | 17 April 2021 21:14:23 | - |
| Monster Rancher 4 (Sep 26, 2003 prototype) | 26 September 2003 19:08:50 | PlayStation 2 | Strategy | 20 March 2021 23:29:49 | - |
| Monster Rancher Evo (Dec 27, 2005 prototype) | 27 December 2005 17:31:53 | PlayStation 2 | Strategy | 20 March 2021 23:52:05 | - |
| Monster in My Pocket (Apr 22, 1991 prototype) | 22 April 1991 | NES | Action | 20 November 2016 18:39:55 | - |
| Monsters vs. Aliens (Dec 17, 2008 prototype) | 17 December 2008 | Xbox 360 | Action-adventure, platformer | 25 December 2022 23:36:39 | - |
| Monsters, Inc. Scare Island (Nov 13, 2001 prototype) | 13 November 2001 07:23:00 | PlayStation 2 | Action | 28 September 2023 03:37:32 | - |
| Monsters, Inc. Scare Island (Nov 20, 2001 prototype) | 20 November 2001 09:40:00 | PlayStation 2 | Action | 14 October 2023 18:27:08 | - |
| Montezuma's Revenge (Jan 3, 1989 prototype) | 3 January 1989 | Sega Master System | Action | 11 March 2017 09:47:03 | - |
| Monty Python Karaoke Best Songs (Jul 22, 1994 prototype) | 22 July 1994 15:45:51 | Philips CD-i | Karoke | 17 April 2021 20:54:16 | - |
| Monty Python's Invasion from the Planet Skyron (May 15, 1995 prototype) | 15 May 1995 | Philips CD-i | 6 June 2019 20:06:34 | - | |
| Monty Python's More Naughty Bits : Best Sketches (Jul 22, 1994 prototype) | 22 July 1994 16:27:18 | Philips CD-i | Trivia | 17 April 2021 20:53:46 | - |
| Moomin's Tale (Prototype) | Game Boy Color | Action | 1 January 2022 20:48:05 | - | |
| Moon Diver (Feb 3, 2011 prototype) | 3 February 2011 | Xbox 360 | Action, Platformer | 29 October 2023 15:56:44 | - |
| Moon Diver (Oct 14, 2010 prototype) | 14 October 2010 | Xbox 360 | Beat Em Up | 16 August 2023 15:40:41 | - |
| Moon Patrol (Atari 5200 prototype B) | Atari 5200 | Action | 15 May 2023 22:43:34 | - | |
| Moon Patrol (Sep 19, 1983 prototype) | 19 September 1983 | Atari 5200 | Action | 15 May 2023 22:37:51 | - |
| Moon Warrior (Apr 28, 1999 - Build 0.05) | 28 April 1999 | PlayStation | Action | 4 April 2022 22:06:39 | ✓ |
| Moontra Kid - Episode 1: Drug War (Jan 8, 2004 demo) | 8 January 2004 | PC | Platformer | 8 March 2023 17:56:10 | - |
| MorphX (Feb 12, 2010 prototype) | 12 February 2010 | Xbox 360 | Action-adventure, Third-person shooter | 25 December 2022 23:35:52 | - |
| Mortal Kombat (Game Boy prototype) | Game Boy | Fighting | 26 September 2021 17:50:20 | - | |
| Mortal Kombat (Game Gear Prototype) | Game Gear | Fighting | 26 May 2021 12:32:08 | - | |
| Mortal Kombat (Mar 11, 2011 prototype) | 11 March 2011 | Xbox 360 | Fighting | 25 December 2022 23:38:26 | - |
| Mortal Kombat (Nov 2, 2012 prototype) | 2 November 2012 16:51:24 | Xbox 360 | Fighting | 25 September 2023 20:40:56 | - |
| Mortal Kombat (Nov 22, 2012 prototype) | 22 November 2012 11:11:30 | Xbox 360 | Fighting | 25 September 2023 20:26:59 | - |
| Mortal Kombat (Prototype B) | Sega Mega Drive | Fighting | 10 October 2021 19:53:29 | - | |
| Mortal Kombat 3 (Aug 1, 1995 prototype) | 1 August 1995 | SNES | Fighting | 22 November 2016 21:46:54 | - |
| Mortal Kombat 3 (Jul 13, 1995 prototype) | 13 July 1995 | SNES | Fighting | 22 November 2016 21:45:40 | - |
| Mortal Kombat 3 (Jul, 1996 prototype) | July 1996 | PC | Fighting | 11 April 2023 16:28:23 | - |
| Mortal Kombat 3 (Jun 17, 1995 prototype) | 17 June 1995 12:25:18 | PlayStation | Fighting | 17 April 2021 21:21:03 | - |
| Mortal Kombat 3 (Mega Drive prototype) | Sega Mega Drive | Fighting | 10 February 2022 21:35:05 | - | |
| Mortal Kombat 3 (NAPALM prototype) | SNES | Fighting | 2 September 2023 14:02:09 | - | |
| Mortal Kombat 4 (Apr 2, 1998 prototype) | 2 April 1998 09:06:12 | PlayStation | Fighting | 26 November 2020 21:08:43 | - |
| Mortal Kombat 4 (Jun 2, 1998 prototype) | 2 June 1998 | PC | Fighting | 11 August 2023 13:44:29 | - |
| Mortal Kombat 4 (May 15, 1998 prototype) | 15 May 1998 10:18:37 | PlayStation | Fighting | 17 April 2021 21:15:57 | - |
| Mortal Kombat 4 (May 21, 1998 prototype) | 21 May 1998 12:03:22 | PlayStation | Fighting | 17 April 2021 21:16:11 | - |
| Mortal Kombat Arcade Kollection (May 3, 2011 prototype) | 3 May 2011 | Xbox 360 | Compilation | 16 August 2023 16:02:21 | - |
| Mortal Kombat Gold (Aug 28, 1999 prototype) | 28 August 1999 13:45:34 | Dreamcast | Fighting | 13 January 2017 19:21:21 | - |
| Mortal Kombat Gold (Jul 27, 1999 prototype) | 27 July 1999 18:36:08 | Dreamcast | Fighting | 18 September 2021 19:43:53 | - |
| Mortal Kombat II (Dec 15, 1995 prototype) | 15 December 1995 11:57:31 | Sega Saturn | Fighting | 17 April 2021 20:56:53 | - |