| 'New Ways to Play' DS Promo Disc | | Nintendo DS | | false |
| 'Splosion Man (Apr 24, 2009 prototype) | 24 April 2009 17:12:17 | Xbox 360 | Platform | false |
| .Hack Infection Part 1 (Jan 9, 2004 prototype) | 9 January 2004 18:01:59 | PlayStation 2 | Role-playing | false |
| 0 Day Attack on Earth (Oct 16, 2009 prototype) | 16 October 2009 22:33:43 | Xbox 360 | Arcade | false |
| 007: Blood Stone (Jul 13, 2010 prototype) | 13 July 2010 17:13:10 | Xbox 360 | Third Person Shooter | false |
| 007: Blood Stone (Jul 17, 2010 prototype) | 17 July 2010 16:00:48 | Xbox 360 | Third Person Shooter | false |
| 007: Blood Stone (Jul 28, 2010 prototype) | 28 July 2010 17:29:41 | Xbox 360 | Third Person Shooter | false |
| 007: Blood Stone (Jul 30, 2010 prototype) | 30 July 2010 15:52:58 | Xbox 360 | Third Person Shooter | false |
| 007: Blood Stone (Jun 10, 2010 prototype) | 10 June 2010 16:10:36 | Xbox 360 | Third Person Shooter | false |
| 007: Blood Stone (Jun 3, 2010 prototype) | 3 June 2010 16:32:30 | Xbox 360 | Third Person Shooter | false |
| 007: Blood Stone (May 21, 2010 prototype) | 21 May 2010 12:35:58 | Xbox 360 | Third Person Shooter | false |
| 007: Blood Stone (May 27, 2010 prototype) | 27 May 2010 15:37:27 | Xbox 360 | Third Person Shooter | false |
| 007: Everything or Nothing (Dec 12, 2003 prototype) | 12 December 2003 03:48:28 | PlayStation 2 | Third-Person Shooter | false |
| 007: Everything or Nothing (Jan 7, 2004 prototype) | 7 January 2004 14:05:08 | Xbox | Action-Adventure, Stealth | false |
| 007: From Russia with Love (Aug 16, 2005 prototype) | 16 August 2005 13:47:38 | PlayStation 2 | Action | false |
| 007: From Russia with Love (Aug 23, 2005 prototype) | 23 August 2005 | PlayStation 2 | Action | false |
| 007: From Russia with Love (Dec 5, 2005 debug build) | 5 December 2005 17:09:34 | Xbox | Action | false |
| 007: From Russia with Love (Jul 13, 2005 prototype) | 13 July 2005 14:32:31 | Xbox | Action | false |
| 007: From Russia with Love (Sep 11, 2005 prototype) | 11 September 2005 07:43:47 | Xbox | Action | false |
| 007: From Russia with Love (Sep 25, 2005 prototype) | 25 September 2005 18:39:29 | PlayStation 2 | Action | false |
| 007: From Russia with Love (Sep 30, 2005 prototype) | 30 September 2005 07:02:59 | Xbox | Action | false |
| 007: Legends (Apr 12, 2012 prototype) | 12 April 2012 15:46:52 | Xbox 360 | First Person Shooter | false |
| 007: Legends (Apr 5, 2012 prototype) | 5 April 2012 10:51:43 | Xbox 360 | First Person Shooter | false |
| 007: Legends (Aug 24, 2012 prototype) | 24 August 2012 | Xbox 360 | First Person Shooter | false |
| 007: Legends (Aug 31, 2012 prototype) | 31 August 2012 15:06:55 | Xbox 360 | First Person Shooter | false |
| 007: Legends (Aug 7, 2012 prototype) | 7 August 2012 | Xbox 360 | FPS | false |
| 007: Legends (Jul 19, 2012 prototype) | 19 July 2012 11:14:25 | Xbox 360 | First Person Shooter | false |
| 007: Legends (Jun 15, 2012 prototype) | 15 June 2012 09:50:32 | Xbox 360 | First Person Shooter | false |
| 007: Legends (Jun 18, 2012 prototype) | 18 June 2012 | Xbox 360 | FPS | false |
| 007: Legends (May 21, 2012 prototype) | 21 May 2012 01:47:56 | Xbox 360 | First Person Shooter | false |
| 007: Legends (May 9, 2012 prototype) | 9 May 2012 17:26:54 | Xbox 360 | First Person Shooter | false |
| 007: Legends (Nov 13, 2012 prototype) | 13 November 2012 | Xbox 360 | FPS | false |
| 007: Legends (Nov 16, 2011 prototype) | 16 November 2011 00:00:00 | Xbox 360 | First Person Shooter | false |
| 007: Legends (Oct 17, 2012 prototype) | 17 October 2012 15:23:36 | Xbox 360 | First Person Shooter | false |
| 007: Legends (Oct 9, 2012 prototype) | 9 October 2012 00:00:00 | Xbox 360 | First Person Shooter | false |
| 007: Legends (Sep 1, 2012 prototype) | 1 September 2012 11:47:58 | Xbox 360 | First Person Shooter | false |
| 007: Legends (Sep 10, 2012 prototype) | 10 September 2012 02:02:15 | Xbox 360 | First Person Shooter | false |
| 007: Legends (Sep 11, 2012 08.30 prototype) | 11 September 2012 08:30:10 | Xbox 360 | First Person Shooter | false |
| 007: Legends (Sep 11, 2012 13.55 prototype) | 11 September 2012 13:55:16 | Xbox 360 | First Person Shooter | false |
| 007: Legends (Sep 14, 2012 prototype) | 14 September 2012 02:26:07 | Xbox 360 | First Person Shooter | false |
| 007: Legends (Sep 18, 2012 prototype) | 18 September 2012 18:20:08 | Xbox 360 | First Person Shooter | false |
| 007: Legends (Sep 20, 2012 prototype) | 20 September 2012 10:32:01 | Xbox 360 | First Person Shooter | false |
| 007: Legends (Sep 26, 2012 prototype) | 26 September 2012 13:18:39 | Xbox 360 | First Person Shooter | false |
| 007: Legends (Sep 27, 2012 13.31 prototype) | 27 September 2012 13:31:59 | Xbox 360 | First Person Shooter | false |
| 007: Legends (Sep 27, 2012 15.08 prototype) | 27 September 2012 15:08:36 | Xbox 360 | First Person Shooter | false |
| 007: Legends (Sep 7, 2012 prototype) | 7 September 2012 19:40:08 | Xbox 360 | First Person Shooter | false |
| 007: Legends (Sep 8, 2012 prototype) | 8 September 2012 19:24:27 | Xbox 360 | First Person Shooter | false |
| 007: Nightfire (Oct 18, 2002 prototype) | 18 October 2002 05:59:30 | Xbox | First-person shooter | false |
| 007: The World Is Not Enough (Aug 26, 2000 prototype) | 26 August 2000 | PlayStation | First-person shooter, stealth | false |
| 007: The World is Not Enough (Dec 15, 1998 prototype) | 15 December 1998 | Nintendo 64 | First-person shooter, stealth | false |
| 007: The World is Not Enough (Prototype A) | | Nintendo 64 | FPS | false |
| 007: The World is Not Enough (Prototype B) | | Nintendo 64 | FPS | false |
| 007: Tomorrow Never Dies (Oct 10, 1999 prototype) | 10 October 1999 12:22:26 | PlayStation | Third Person Shooter | false |
| 1 vs. 100 (Apr 14, 2010 Prototype) | 14 April 2010 | Xbox 360 | | false |
| 1 vs. 100 (Dec 7, 2009 prototype) | 7 December 2009 | Xbox 360 | | false |
| 10-Pin Bowling (Game Boy prototype) | | Game Boy | Bowling | true |
| 100 Bullets (Apr 22, 2004 prototype) | 22 April 2004 | Xbox | Action | true |
| 100 Bullets (Aug 6, 2004 prototype) | 6 August 2004 | Xbox | Action | true |
| 100 Bullets (Jun 30, 2004 prototype) | 30 June 2004 | PlayStation 2 | Action | true |
| 100 Bullets (Oct 8, 2003 prototype) | 8 October 2003 | Xbox | Third Person Shooter | true |
| 101 Dalmatians (Aug 14, 1996 prototype) | 14 August 1996 06:07:02 | Sega Pico | Educational | false |
| 101 Dalmatians (Aug 16, 1996 prototype) | 16 August 1996 05:19:20 | Sega Pico | Educational | false |
| 101 Dalmatians (Aug 17, 1996 prototype B) | 17 August 1996 06:47:28 | Sega Pico | Educational | false |
| 101 Dalmatians (Aug 17, 1996 prototype J) | 16 August 1996 20:56:56 | Sega Pico | Educational | false |
| 101 Dalmatians (Aug 17, 1996 prototype U) | 16 August 1996 18:59:48 | Sega Pico | Educational | false |
| 101 Dalmatians (Jul 18, 1996 prototype) | 18 July 1996 12:31:08 | Sega Pico | Educational | false |
| 101 Dalmatians (Jul 3, 1996 prototype) | 3 July 1996 11:22:50 | Sega Pico | Educational | false |
| 101 Dalmatians (Jul 5, 1996 prototype) | 7 July 1996 13:11:32 | Sega Pico | Educational | false |
| 101 Dalmatians (May 21, 1996 prototype) | 21 May 1996 17:26:14 | Sega Pico | Educational | false |
| 101 Dalmatians (May 31, 1996 prototype) | 31 May 1996 08:51:22 | Sega Pico | Educational | false |
| 171-5486 | | Sega Master System | | |
| 171-5587 | | Sega Master System | | |
| 171-5694-01 | | Sega Mega Drive | | |
| 171-5862A | | Sega Mega Drive | | |
| 171-5966C | | Game Gear | | |
| 171-5986B | | Game Gear | | |
| 171-6305B | | Game Gear | | |
| 171-6563A | | Sega Mega Drive | | |
| 171-6568C | | Sega Mega Drive | | |
| 171-6866 | | Sega Mega Drive | | |
| 171-6885A | | Sega Mega Drive | | |
| 171-6922A | | Sega Mega Drive | | |
| 18 Wheeler: American Pro Trucker (Apr 5, 2001 prototype) | 5 April 2001 22:04:22 | Dreamcast | Racing | false |
| 18 Wheeler: American Pro Trucker (Feb 2, 2001 prototype) | 2 February 2001 04:11:28 | Dreamcast | Racing | false |
| 18 Wheeler: American Pro Trucker (Nov 12, 2001 prototype) | 12 November 2001 | Nintendo GameCube | Racing | false |
| 1942: Joint Strike (Apr 17, 2008 prototype) | 17 April 2008 | Xbox 360 | Shoot Em Up | false |
| 1943: The Battle of Midway (Prototype B) | | NES | Shooter | false |
| 1943: The Battle of Midway (Prototype C) | | NES | Shooter | false |
| 1943: The Battle of Midway (Prototype) | | NES | Shooter | false |
| 1C Company Gamescom 2009 Press Kit | | Other | | false |
| 1C Company Gamescom 2009 Public Kit | | Other | | false |
| 2 Games in 1: The SpongeBob SquarePants Movie / Battle for Bikini Bottom (Nov 10, 2005 prototype) | 10 November 2005 | Nintendo GameCube | Compilation | false |
| 2 in 1: Dora the Explorer Double Pack (Prototype) | | Game Boy Advance | Compilation | false |
| 2002 World Cup PK (Design Documents) | | NES | | true |
| 2002 World Cup PK (PAL prototype) | | NES | | true |
| 2010 FIFA World Cup South Africa (Feb 10, 2010 German and French prototype) | 10 February 2010 | PlayStation Portable | Sports | false |
| 2010 FIFA World Cup South Africa (Feb 10, 2010 Italian and Spanish prototype) | 10 February 2010 | PlayStation Portable | Sports | false |
| 2010 FIFA World Cup South Africa (Jan 23, 2010 prototype) | 23 January 2010 | Xbox 360 | Sports | false |
| 2010: The Graphic Action Game (Nov 9, 1984 prototype) | 9 November 1984 | ColecoVision | Puzzle | false |
| 2010: The Graphic Action Game (RV44 prototype) | | ColecoVision | Puzzle | false |
| 2097 ROM Pack II | | Game Boy | Test cartridge | false |
| 2420 ROM Pack V | | Game Boy | Test cartridge | false |
| 2440 ROM Pack | | Game Boy | Test cartridge | false |
| 24: The Game (Dec 13, 2005 prototype) | 13 December 2005 22:51:40 | PlayStation 2 | Third-person shooter | false |
| 24: The Game (Jan 10, 2006 prototype) | 10 January 2006 | PlayStation 2 | Third-person shooter | false |
| 24: The Game (Jan 9, 2006 prototype) | 9 January 2006 01:29:18 | PlayStation 2 | Third-person shooter | false |
| 24: The Game (Nov 28, 2005 prototype) | 28 November 2005 10:18:41 | PlayStation 2 | Third-person shooter | false |
| 25 to Life (Dec 8, 2005 prototype) | 8 December 2005 | Xbox | Third-person shooter | false |
| 25 to Life (May 24, 2005 prototype) | 24 May 2005 23:53:09 | PlayStation 2 | Third-person shooter | false |
| 2Xtreme (Aug 29, 1996 prototype) | 29 August 1996 13:02:18 | PlayStation | Racing | false |
| 3 on 3 NHL Arcade (Dec 1, 2008 prototype) | 1 December 2008 | Xbox 360 | Sports - Hockey | false |
| 3 on 3 NHL Arcade (Dec 17, 2008 prototype) | 17 December 2008 | Xbox 360 | Sports - Hockey | false |
| 3-D Genesis (prototype) | | Atari 2600 | Shoot 'em up | true |
| 3-D Rubik's Cube (prototype) | | Atari 2600 | Puzzle | true |
| 3-D Zapper (Dec 15, 1982 prototype) | 15 December 1982 | Atari 2600 | Shoot 'em up | true |
| 3-D Zapper (prototype 2) | | Atari 2600 | Shoot 'em up | true |
| 3D Action (prototype) | | Nintendo DS | | true |
| 3D Baseball (Aug 30, 1996 prototype) | 30 August 1996 20:30:23 | Sega Saturn | Sports - Baseball | false |
| 3D Baseball (Aug 6, 1996 prototype) | 6 August 1996 16:31:40 | Sega Saturn | Sports - Baseball | false |
| 3D Baseball (Oct 16, 1996 prototype) | 16 October 1996 07:17:52 | Sega Saturn | Sports - Baseball | false |
| 3D Baseball (Sep 19, 1996 prototype) | 19 September 1996 18:35:56 | Sega Saturn | Sports - Baseball | false |
| 3D Challenge (Tech Demo) (E3 prototype) | | Nintendo 3DS | | false |
| 3D Gunner (Prototype) | | Sega Master System | Shooter | true |
| 3D Lemmings (Aug 23, 1995 prototype) | 23 August 1995 15:41:06 | PlayStation | Puzzle | false |
| 3D Lemmings (Aug 8, 1995 prototype) | 8 August 1995 15:36:48 | PlayStation | Puzzle | false |
| 3D Pinball: Space Cadet (Apr 26, 1995 prototype) | 26 April 1995 18:49:55 | PC | Pinball | false |
| 3D Pinball: Space Cadet (July 3, 1995 prototype) | 3 July 1995 05:30:00 | PC | Pinball | false |
| 3D Pinball: Space Cadet (June 12, 1995 prototype) | 12 June 1995 23:02:24 | PC | Pinball | false |
| 3D Pinball: Space Cadet (June 16, 1995 prototype) | 16 June 1995 20:41:19 | PC | Pinball | false |
| 3D Pinball: Space Cadet (June 27, 1995 prototype) | 27 June 1995 17:19:44 | PC | Pinball | false |
| 3D Pinball: Space Cadet (May 12, 1995 prototype) | 12 May 1995 16:36:21 | PC | Pinball | false |
| 3D Pinball: Space Cadet (May 26, 1995 prototype) | 26 May 1995 17:33:35 | PC | Pinball | false |
| 3D Pocket Pool (Prototype) | | Game Boy Color | Pool | false |
| 3D Roam (prototype) | | Commodore 64 | Action | true |
| 3D Terrain (2001 tech demo) | | Game Boy Advance | | true |
| 3D Ultra Mini Golf (Mar 17, 2007 prototype) | | Xbox 360 | Sports | false |
| 3D Ultra MiniGolf Adventures 2 (Jul 23, 2010 prototype) | 23 July 2010 | Xbox 360 | Golf | false |
| 3D Ultra Minigolf Adventures (DLC Lost Island prototype) | | Xbox 360 | Golf | false |
| 3DO M2 Shooter Demo | | Panasonic M2 | Tech Demo | false |
| 4 Wheel Thunder (Jan 26, 2000 prototype) | 26 January 2000 16:32:38 | Dreamcast | Racing | false |
| 4 Wheel Thunder (Jan 29, 2000 prototype) | 29 January 2000 18:00:12 | Dreamcast | Racing | false |
| 4 Wheel Thunder (Mar 31, 2000 prototype) | 31 March 2000 19:36:08 | Dreamcast | Racing | false |
| 4 Wheel Thunder (Nov 5, 1999 prototype) | 5 November 1999 13:57:00 | Dreamcast | Racing | false |
| 4 in 1 (Feb 19, 1987 prototype) | 19 February 1987 | Atari 2600 | Various | true |
| 40 Winks (Oct 7, 1999 prototype) | 7 October 1999 11:30:42 | Nintendo 64 | Platform | false |
| 4x4 Evo 2 (Feb 27, 2002 prototype) | 27 February 2002 19:02:34 | PlayStation 2 | Racing | false |
| 4x4 Evolution (Jan 9, 2001 prototype) | 9 January 2001 11:47:12 | Dreamcast | Racing | false |
| 4×4 Off-Roaders (prototype) | | Game Boy Advance | Racing | true |
| 500 Years After (Mar 1, 1993 prototype) | 1 March 1993 | Philips CD-i | FMV | false |
| 64DD IPL Disk (v1.0) | | Nintendo 64DD | Development | false |
| 64DD IPL Disk (v1.1) | | Nintendo 64DD | Development | false |
| 666: The Number of the Beast (Jun 5, 1989 prototype) | 5 June 1989 | Commodore 64 | Adventure | true |
| 6GUN (May 31, 2005 prototype) | 31 May 2005 22:28:48 | PlayStation 2 | Third person shooter | true |
| 7 Sins (Sep 29, 2004 prototype) | 29 September 2004 | PlayStation 2 | Life simulation game | false |
| 7th Guest (Feb 4, 1994 prototype) | 4 February 1994 12:05:41 | Philips CD-i | First-Person Adventure | false |
| 8 Kings (Aug 7, 2003 prototype) | 7 August 2003 | N-Gage | | true |
| 8 Kings (Jun 5, 2003 prototype) | 5 June 2003 | N-Gage | | true |
| 8 Kings (May 9, 2003 prototype) | 9 May 2003 | N-Gage | | true |
| 8 Kings (Nov 18, 2003 prototype) | 18 November 2003 | PC | | true |
| 8 Kings (Oct 23, 2003 prototype) | 23 October 2003 | N-Gage | | true |
| 8 in 1 (Nov 16, 1992 prototype) | | Atari 2600 | Compilation | true |
| 8Ball Allstars (Aug 15, 2008 Pool prototype) | 15 August 2008 15:55:36 | Nintendo DS | Pool | false |
| 8Ball Allstars (Feb 11, 2008 prototype) | 11 February 2008 21:06:18 | Nintendo DS | Pool | false |
| 8Ball Allstars (Feb 26, 2008 prototype) | 26 February 2008 12:43:36 | Nintendo DS | Pool | false |
| 90 Minutes: European Prime Goal (prototype) | | SNES | Sports | false |
| 90 Minutes: Sega Championship Football (Sep 18, 2001 prototype) | 18 September 2001 | Dreamcast | Sports - Football | false |
| A Boy and His Blob (Jul 21, 2005 prototype) | 21 July 2005 19:32:00 | Nintendo DS | Puzzle | true |
| A Boy and His Blob (May 16, 2005 prototype) | 16 May 2005 14:40:00 | Nintendo DS | Puzzle | true |
| A Bug's Life (Nov 18, 1998 prototype) | 18 November 1998 | PlayStation | Platform | false |
| A Farewell To Dragons (Nov 20, 2009 prototype) | 20 November 2009 | PC | Action, Role-Playing | false |
| A Kingdom for Keflings (Apr 14, 2009 prototype) | 14 April 2009 | Xbox 360 | Strategy | false |
| A Kingdom for Keflings (Aug 30, 2008 prototype) | 30 August 2008 | Xbox 360 | Strategy, Simulation | false |
| A Kingdom for Keflings (Oct 29, 2008 prototype) | 29 October 2008 | Xbox 360 | Strategy | false |
| A Night in Nylon City (Oct 28, 1994 prototype) | 28 October 1994 | Philips CD-i | FMV | false |
| A Week of Garfield (Prototype) | | NES | Platformer | false |
| A Week of Garfield (Ver 0.9 prototype) | | NES | Platformer | false |
| A World of Keflings (Feb 27, 2010 prototype) | 27 February 2010 00:24:23 | Xbox 360 | Strategy | false |
| A World of Keflings (Oct 19, 2010 prototype) | 19 October 2010 | Xbox 360 | Strategy | false |
| A-Max Boxing (prototype) | | Nintendo DS | Sports | true |
| A-Max Tennis (prototype) | | Nintendo DS | Sports | true |
| A-Team (Mar 30, 1984 prototype) | | Atari 2600 | | true |
| A-Team (May 8, 1984 prototype) | | Atari 2600 | | true |
| A.J.'s World of Discovery (Apr 5, 1993 prototype) | 5 April 1993 | PC | Educational adventure | false |
| AGB Aging Cartridge (1.0) | | Game Boy Advance | | false |
| AGB Aging Cartridge (9.0) | | Game Boy Advance | | false |
| AGING-NTR (Aug 18, 2004 prototype) | 18 August 2004 | Nintendo DS | Diagnostic | true |
| AH-64D Apache (Mar 26, 2003 prototype) | 26 March 2003 15:11:27 | PlayStation 2 | Action | false |
| AMF Bowling (Prototype) | | Game Boy Color | Bowling | true |
| ATP Tour Championship Tennis (Aug 2, 1994 prototype) | 2 August 1994 16:39:48 | Sega Mega Drive | Sports - Tennis | false |
| ATP Tour Championship Tennis (Aug 5, 1994 prototype) | 5 August 1994 05:22:18 | Sega Mega Drive | Sports - Tennis | false |
| ATP Tour Championship Tennis (Aug 8, 1994 prototype) | 8 August 1994 15:44:46 | Sega Mega Drive | Sports - Tennis | false |
| ATP Tour Championship Tennis (Jul 19, 1994 prototype) | 19 July 1994 05:43:00 | Sega Mega Drive | Sports - Tennis | false |
| ATP Tour Championship Tennis (Jul 23, 1994 prototype) | 25 July 1994 12:02:30 | Sega Mega Drive | Sports - Tennis | false |
| ATP Tour Championship Tennis (May 9, 1994 prototype) | 26 May 1994 21:33:22 | Sega Mega Drive | Sports - Tennis | false |
| ATP Tour Championship Tennis (Sep 19, 1994 prototype) | 19 September 1994 05:53:12 | Sega Mega Drive | Sports - Tennis | false |
| ATP Tour Championship Tennis (Sep 8, 1994 prototype) | 14 September 1994 06:10:28 | Sega Mega Drive | Sports - Tennis | false |
| ATV Offroad Fury 3 (Aug 22, 2004 prototype) | 22 August 2004 | PlayStation 2 | Racing | false |
| ATV Offroad Fury 3 (Aug 6, 2004 prototype) | 6 August 2004 15:03:14 | PlayStation 2 | Racing | false |
| ATV Offroad Fury 3 (Jul 23, 2004 prototype) | 23 July 2004 06:01:15 | PlayStation 2 | Racing | false |
| ATV Offroad Fury 3 (Jun 8, 2004 prototype) | 8 June 2004 13:10:10 | PlayStation 2 | Racing | false |
| ATV Offroad Fury 3 (Nov 8, 2004 prototype) | 8 November 2004 11:47:45 | PlayStation 2 | Racing | false |
| ATV Offroad Fury 3 (Nov 9, 2004 prototype) | 9 November 2004 13:37:38 | PlayStation 2 | Racing | false |
| ATV Offroad Fury 3 (Oct 13, 2004 prototype) | 13 October 2004 20:11:01 | PlayStation 2 | Racing | false |
| ATV Offroad Fury 4 (Oct 2, 2006 prototype) | 2 October 2006 | PlayStation 2 | | false |
| ATV Offroad Fury Pro (Sep 25, 2006 prototype) | 25 September 2006 | PlayStation Portable | | false |
| ATV3: Lawless (May 7, 2005 prototype) | 7 May 2005 | Xbox | Racing | true |
| ATV: Quad Power Racing (Jul 4, 2000 prototype) | 4 July 2000 18:29:56 | PlayStation | Racing | false |
| ATV: Quad Power Racing 2 (Dec 12, 2002 prototype) | 12 December 2002 17:58:28 | Xbox | Racing | false |
| ATV: Quad Power Racing 2 (Dec 2, 2002 prototype) | 2 December 2002 14:17:00 | PlayStation 2 | Racing | false |
| ATV: Quad Power Racing 2 (Nov 11, 2002 prototype) | 11 November 2002 21:08:29 | Xbox | Racing | false |
| ATV: Quad Power Racing 2 (Nov 6, 2002 prototype) | 6 November 2002 | PlayStation 2 | Racing | false |
| ATV: Quad Power Racing 2 (Oct 11, 2002 prototype) | 11 October 2002 18:01:57 | Nintendo GameCube | Racing | false |
| ATV: Quad Power Racing 2 (Oct 2, 2002 prototype) | 2 October 2002 14:10:27 | Xbox | Racing | false |
| ATV: Quad Power Racing 2 (Oct 7, 2002 prototype) | 7 October 2002 12:17:58 | PlayStation 2 | Racing | false |
| ATV: Quad Power Racing 2 (Sep 30, 2002 prototype) | 30 September 2002 20:41:12 | PlayStation 2 | Racing | false |
| ATWINMON v1.13 INET (Sep 8, 2003 prototype) | 8 September 2003 15:37:20 | PlayStation 2 | Test Application | false |
| Aaahh!!! Real Monsters (Jul 7, 1995 prototype) | 7 July 1995 | Sega Mega Drive | Adventure | false |
| Aardman Intro (Tech Demo) (prototype) | 22 February 2004 | Game Boy Advance | Tech Demos | true |
| Abomination: The Nemesis Project (Sep 15, 1999 prototype) | 15 September 1999 | PC | | false |
| Absolute X (Prototype) | | Game Boy Color | Shooter | true |
| Ace Combat 04: Shattered Skies (Aug 27, 2001 prototype) | 27 August 2001 19:51:01 | PlayStation 2 | Combat flight simulator | false |
| Ace Combat 04: Shattered Skies (Nov 14, 2001 prototype) | 15 November 2001 14:33:44 | PlayStation 2 | Combat flight simulator | false |
| Ace Combat 3: Electrosphere (Dec 9, 1999 prototype) | 9 December 1999 01:01:00 | PlayStation | Flight Combat Simulator | false |
| Ace Combat 3: Electrosphere (Jan 7, 2000 prototype) | 7 January 2000 00:00:00 | PlayStation | Flight Combat Simulator | false |
| Ace Combat 5: The Unsung War (Dec 2, 2004 prototype) | 2 December 2004 18:12:22 | PlayStation 2 | Combat flight simulator | false |
| Ace Combat 5: The Unsung War (Nov 12, 2004 prototype) | 12 November 2004 22:29:38 | PlayStation 2 | Combat flight simulator | false |
| Ace Combat 6: Fires of Liberation (DLC Ace of Aces Mission 03 prototype) | | Xbox 360 | Action, Simulation, Flight Simulator | false |
| Ace Combat 6: Fires of Liberation (DLC Ace of Aces Mission 04 prototype) | | Xbox 360 | Action, Simulation, Flight Simulator | false |
| Ace Combat 6: Fires of Liberation (DLC Aircraft Data Pack02 prototype) | | Xbox 360 | Action, Simulation, Flight Simulator | false |
| Ace Combat 6: Fires of Liberation (DLC Aircraft Data Pack10 Prototype) | | Xbox 360 | Action, Simulation, Flight Simulator | false |
| Ace Combat 6: Fires of Liberation (DLC Battle Royale DL 1 prototype) | | Xbox 360 | Action, Simulation, Flight Simulator | false |
| Ace Combat 6: Fires of Liberation (DLC Battle Royale DL 2 prototype) | | Xbox 360 | Action, Simulation, Flight Simulator | true |
| Ace Combat 6: Fires of Liberation (DLC Siege Battle DL 1 prototype) | | Xbox 360 | Action, Simulation, Flight Simulator | false |
| Ace Combat 6: Fires of Liberation (Oct 4, 2007 prototype) | 4 October 2007 00:00:00 | Xbox 360 | Flight Combat Simulator | false |
| Ace Combat 6: Fires of Liberation (Sep 6, 2007 prototype) | 6 September 2007 00:00:00 | Xbox 360 | Flight Combat Simulator | false |
| Ace Combat Advance (Prototype) | | Game Boy Advance | Flight Combat | false |
| Ace Combat Infinity (EU Multiplayer prototype) | | PlayStation 3 | Action, Flight Simulator | false |
| Ace Combat Infinity (JP Multiplayer prototype) | | PlayStation 3 | Action, Flight Simulator | false |
| Ace Combat Infinity (USA Multiplayer prototype) | | PlayStation 3 | Action, Flight Simulator | false |
| Ace Combat X: Skies of Deception (Aug 1, 2006 prototype) | 1 August 2006 19:01:55 | PlayStation Portable | Shooting | false |
| Ace Combat X: Skies of Deception (Aug 16, 2006 prototype) | 16 August 2006 23:27:31 | PlayStation Portable | Flight Combat | false |
| Ace Combat Zero: The Belkan War (Jun 1, 2006 prototype) | 1 June 2006 20:08:40 | PlayStation 2 | Combat flight simulator | false |
| Ace Combat: Assault Horizon (ASIA demo) | | PlayStation 3 | Air combat simulation | false |
| Ace Combat: Assault Horizon (Aug 23, 2011 prototype) | 23 August 2011 00:00:00 | Xbox 360 | Flight Combat Simulator | false |
| Ace Combat: Assault Horizon (Aug 30, 2011 prototype) | 30 August 2011 | Xbox 360 | Action, Flight Simulator | false |
| Ace Combat: Assault Horizon (EU demo) | | PlayStation 3 | Air combat simulation | false |
| Ace Combat: Assault Horizon (Jul 11, 2011 prototype) | 11 July 2011 | Xbox 360 | Air combat simulation | false |
| Ace Combat: Assault Horizon (USA demo) | | PlayStation 3 | Air combat simulation | false |
| Ace Combat: Joint Assault (Jun 11, 2010 prototype) | 11 June 2010 18:33:36 | PlayStation Portable | Air Combat Simulation | false |
| Ace Combat: Joint Assault (Jun 14, 2010 JP demo) | 14 June 2010 14:33:34 | PlayStation Portable | Flight Simulator | false |
| Aces of the Galaxy (Apr 14, 2008 prototype) | 14 April 2008 | Xbox 360 | Action, Shooter, Vehicular Combat | false |
| Aces of the Galaxy (Feb 22, 2008 prototype) | 22 February 2008 | Xbox 360 | Third Person Shooter | false |
| Acolyte (Prototype) | | Amstrad CPC | Action | true |
| ActRaiser (Prototype) | | SNES | Platform/city management | false |
| Action Bass (Jun 21, 2000 prototype) | 21 June 2000 18:44:30 | PlayStation | Fishing | false |
| Action Fighter (Prototype) | | Sega Master System | Action | false |
| Actionauts (Jun 22, 1984 prototype) | | Atari 2600 | | true |
| Active Life: Explorer (Jun 9, 2010 prototype) | 9 June 2010 | Nintendo Wii | Exergaming | false |
| Active Life: Magical Carnival (Debug prototype) | | Nintendo Wii | Minigames | false |
| Active Life: Magical Carnival (Nov 7, 2011 prototype) | 7 November 2011 | Nintendo Wii | Minigames | false |
| Activision Classics (Jul 27, 1998 prototype) | 27 July 1998 20:42:44 | PlayStation | Compilation | false |
| Addams Family (Aug 2, 1991 prototype) | 2 August 1991 | NES | Platformer | false |
| Addams Family (Prototype B) | | NES | Platformer | false |
| Addams Family Values (Early SNES Prototype) | | SNES | Action Adventure | false |
| Addams Family Values (Mega Drive Prototype) | | Sega Mega Drive | Action Adventure | false |
| Addams Family Values (Prototype) | | Sega Mega Drive | Action Adventure | false |
| Adhoc Party for Playstation Portable (EU QA Patch Data 1.01 prototype) | | PlayStation 3 | | false |
| Adian no Tsue (Oct 29, 1986 prototype) | 29 October 1986 | FDS | Educational | false |
| Advance Wars (iQue prototype) | | Game Boy Advance | Strategy | false |
| Advanced Daisenryaku - Deutsch Dengeki Sakusen (Mar 7, 1991 prototype) | 7 March 1991 17:35:20 | Sega Mega Drive | Strategy | false |
| Advanced Dungeons & Dragons: Heroes of the Lance (prototype) | | NES | Role-playing | false |
| Advanced Dungeons & Dragons: Hillsfar (Prototype) | | NES | Role Playing | false |
| Advanced Dungeons & Dragons: Pool of Radiance (Prototype) | | NES | Role Playing | false |
| Advent Rising (Apr 22, 2005 prototype) | 22 April 2005 21:47:28 | Xbox | Third-Person Shooter | false |
| Advent Rising (Feb 16, 2005 prototype) | 16 February 2005 12:55:19 | Xbox | Third-Person Shooter | false |
| Adventure Island II (Prototype) | | NES | Platform | false |
| Adventure Island III (Prototype) | | NES | Action | false |
| Adventure Time: Finn and Jake Investigations (Apr 7, 2015 prototype) | 7 April 2015 | Nintendo 3DS | Role-Playing, Action-Adventure | false |
| Adventure Time: Finn and Jake Investigations (Feb 2, 2015 prototype) | 2 February 2015 | Nintendo 3DS | Role-Playing, Action-Adventure | false |
| Adventure Time: Hey Ice King! Why’d you steal our garbage?!! (Jul 20, 2012 Nintendo 3DS prototype) | 20 July 2012 20:27:11 | Nintendo 3DS | Action-adventure | false |
| Adventure Time: Hey Ice King! Why’d you steal our garbage?!! (Jul 20, 2012 Nintendo DS prototype) | 20 July 2012 20:26:41 | Nintendo DS | Action-adventure | false |
| Adventure Time: Hey Ice King! Why’d you steal our garbage?!! (Jun 19, 2012 prototype) | 19 June 2012 | Nintendo 3DS | Action-adventure | false |
| Adventure Time: Hey Ice King! Why’d you steal our garbage?!! (Jun 30, 2012 prototype) | 30 June 2012 14:39:12 | Nintendo 3DS | Action-adventure | false |
| Adventure Time: Hey Ice King! Why’d you steal our garbage?!! (May 11, 2012 prototype) | 11 May 2012 12:49:16 | Nintendo 3DS | Action-adventure | false |
| Adventure Time: The Secret of the Nameless Kingdom (Oct 28, 2014 prototype) | 28 October 2014 | PlayStation Vita | Role-Playing, Action-Adventure | false |
| Adventure Time: The Secret of the Nameless Kingdom (Sep 22, 2014 prototype) | 22 September 2014 | Nintendo 3DS | Role-Playing, Action-Adventure | false |
| Adventures in the Magic Kingdom (Early prototype) | | NES | Action | false |
| Adventures in the Magic Kingdom (Prototype) | | NES | Action | false |
| Adventures of Dr. Franken (Prototype) | | NES | Action | true |
| Adventures of Rad Gravity (Jul 31, 1990 prototype) | 31 July 1990 | NES | Platformer | false |
| Adventures to Go! (Jun 12, 2009 prototype) | 12 June 2009 | PlayStation Portable | Role-playing | false |
| Aegis Wing (Mar 20, 2007 prototype) | 20 March 2007 | Xbox 360 | Shoot Em Up | false |
| Aeon Flux (Aug 13, 2005 prototype) | 13 August 2005 18:11:28 | Xbox | Action-Adventure | false |
| Aeon Flux (Jun 27, 2005 prototype) | 27 June 2005 | PlayStation 2 | Action-adventure | false |
| Aeon Flux (Nov 18, 1996 prototype) | 18 November 1996 | PlayStation | Action | true |
| Aeon Flux (Oct 11, 2005 prototype) | 11 October 2005 | PlayStation 2 | | false |
| Aero Elite: Combat Academy (Dec 12, 2002 prototype) | 12 December 2002 17:54:50 | PlayStation 2 | Flight Combat Simulator | false |
| Aero the Acro-Bat (Game Boy Advance prototype) | | Game Boy Advance | Platformer | false |
| Aero the Acro-Bat (PAL prototype) | | Sega Mega Drive | Platform | false |
| Aero the Acro-Bat 2 (Aug 8, 1994 prototype) | 8 August 1994 | SNES | Action | false |
| Aero-Cross (Nov 26, 2010 prototype) | 26 November 2010 | Xbox 360 | Racing | true |
| AeroGauge (Japanese demo) | | Nintendo 64 | Racing | false |
| Afro Samurai (Dec 1, 2008 prototype) | 1 December 2008 | Xbox 360 | Action | false |
| Afro Samurai (Oct 30, 2008 prototype) | 30 October 2008 | Xbox 360 | Action | false |
| After Burner Climax (Dec 11, 2009 prototype) | 11 December 2009 03:43:31 | Xbox 360 | Action, Shooter, Vehicular Combat | false |
| After Burner Climax (Dec 21, 2009 prototype) | 21 December 2009 | Xbox 360 | Action, Shooter, Vehicular Combat | false |
| Aftershock (May 3, 1995 prototype) | 3 May 1995 15:04:20 | PlayStation | Shooter | false |
| Agaju: The Sacred Path of Treasure (Prototype) | | Gizmondo | Adventure | true |
| Agartha (Apr 17, 2001 prototype) | 17 April 2001 | Dreamcast | Survival Horror | true |
| Agartha (Apr 18, 2001 prototype) | 18 April 2001 00:23:42 | Dreamcast | Survival Horror | true |
| Agartha (Mar 5, 2001 prototype) | 5 March 2001 16:34:14 | Dreamcast | Survival Horror | true |
| Agartha (Mar 9, 2001 prototype) | 9 March 2001 | Dreamcast | Survival Horror | true |
| Age of Booty (Jun 24, 2008 prototype) | 24 June 2008 | Xbox 360 | Real Time Strategy | false |
| Age of Booty (May 28, 2008 prototype) | 28 May 2008 | Xbox 360 | Real Time Strategy | false |
| Age of Empires (Aug 15, 1997 prototype) | 15 August 1997 | PC | | false |
| Age of Empires 2 - Age of Kings (Aug 13, 1998 prototype) | 13 August 1998 | PC | RTS | false |
| Age of Empires 2 - Age of Kings (Feb 22, 1999 prototype) | 22 February 1999 | PC | RTS | false |
| Age of Empires 2 - Age of Kings (Jul 17, 1998 prototype) | 17 July 1998 | PC | RTS | false |
| Age of Empires 2 - Age of Kings (July 1, 1999 prototype) | 1 July 1999 | PC | RTS | false |
| Age of Empires 2 - Age of Kings (June 2, 1999 prototype) | 2 June 1999 | PC | RTS | false |
| Age of Empires 2 - Age of Kings (June 30, 1999 prototype) | 30 June 1999 | PC | RTS | false |
| Age of Empires 2 - Age of Kings (May 13, 1999 prototype) | 13 May 1999 | PC | RTS | false |
| Age of Empires: The Rise of Rome (Aug 5, 1998 prototype) | 5 August 1998 | PC | RTS | false |
| Age of Empires: The Rise of Rome (Sep 15, 1998 prototype) | 15 September 1998 | PC | RTS | false |
| Age of Pirates: Captain Blood (Aug 27, 2004 ECTS demo) | 27 August 2004 | PC | Action-adventure | false |
| Age of Pirates: Captain Blood (Dec 31, 2010 prototype) | 31 December 2010 | PC | Action-adventure | true |
| Age of Pirates: Captain Blood (May 12, 2005 E3 demo) | 12 May 2005 | PC | Action-adventure | false |
| Age of Wonders II: The Wizard's Throne (Apr 17, 2002 prototype) | 17 April 2002 | PC | Strategy | false |
| Aggressive Inline (Aug 21, 2002 prototype) | 21 August 2002 07:53:47 | Xbox | Sports | false |
| Aggressive Inline (Aug 6, 2002 prototype) | 6 August 2002 | Nintendo GameCube | Sports - Skating | false |
| Aggressive Inline (Jul 29, 2002 prototype) | 29 July 2002 | Nintendo GameCube | Sports - Skating | false |
| Aggressive Inline (Mar 2, 2002 prototype) | 2 March 2002 | PlayStation 2 | Sports | false |
| Aggressive Inline (Mar 3, 2002 prototype) | 3 March 2002 | PlayStation 2 | Sports | false |
| Aidyn Chronicles: The First Mage (Apr 10, 2001 prototype) | 10 April 2001 14:55:18 | Nintendo 64 | Role playing | false |
| Aidyn Chronicles: The First Mage (Dec 5, 2000 Prototype) | 5 December 2000 | Nintendo 64 | Action | false |
| Aidyn Chronicles: The First Mage (Feb 1, 2001 Debug) | January 2001 | Nintendo 64 | Role-playing Game | false |
| Aidyn Chronicles: The First Mage (Feb 10, 2000 prototype) | 10 February 2000 13:21:13 | Nintendo 64 | Role playing | false |
| Aidyn Chronicles: The First Mage (Mar 2, 2001 prototype) | 2 March 2001 19:42:35 | Nintendo 64 | Role playing | false |
| Aidyn Chronicles: The First Mage (May 9, 2000 prototype) | 9 May 2000 07:45:51 | Nintendo 64 | Role playing | false |
| Air Fortress (Mar 3, 1989 prototype) | 3 March 1989 | NES | Shoot 'em up/Platformer | false |
| Air Fortress (Prototype) | | FDS | Shooter | true |
| Air Sea Battle (Robert Coppock Demo) | | Atari 2600 | | false |
| Air Zonk (Prototype) | | TurboGrafx-16 | Platformer | false |
| AirBlade (Nov 8, 2001 prototype) | 8 November 2001 11:58:46 | PlayStation 2 | Sports - Inline | false |
| AirCars (Nov 14, 1994 prototype) | 14 November 1994 | Atari Jaguar | Action | false |
| AirForce Delta (Jun 18, 1999 prototype) | 18 June 1999 11:16:54 | Dreamcast | Flight Combat Simulator | false |
| AirForce Delta (Nov 30, 1999 prototype) | 30 November 1999 14:58:26 | Dreamcast | Flight Combat Simulator | false |
| AirMech Arena (Aug 15, 2014 prototype) | 15 August 2014 | Xbox 360 | Vehicular Combat | false |
| Airball (Prototype C) | | NES | Action | true |
| Airblade (Sep 16, 2001 prototype) | 16 September 2001 18:49:31 | PlayStation 2 | Sports | false |
| Airburst (Jul 13, 2008 prototype) | 13 July 2008 | Xbox 360 | Action | true |
| Airlock (prototype) | | Atari 2600 | Action | false |
| Akira (Prototype) | | Sega Mega Drive | Action | true |
| Akuji the Heartless (Oct 14, 1998 prototype) | 14 October 1998 11:28:52 | PlayStation | Action | false |
| Akuji: The Heartless (Nov 11, 1998 prototype) | 11 November 1998 | PlayStation | Action | false |
| Akuu Senki Raijin (Oct 14, 1987 prototype) | 14 October 1987 | FDS | Shoot 'Em Up | false |
| Ala (prototype) | | Commodore 64 | Shoot 'em up | true |
| Aladdin (Aug 13, 1993 prototype) | 13 August 1993 17:50:24 | Sega Mega Drive | Platformer | false |
| Aladdin (Chicago C.E.S demo) | 27 June 1993 | Sega Mega Drive | Platform | false |
| Aladdin (Dec 28, 1993 prototype) | 29 December 1993 11:11:18 | Game Gear | Action Platformer | false |
| Aladdin (Jan 11, 1994 prototype) | 9 January 1994 19:35:30 | Game Gear | Action Platformer | false |
| Aladdin (Jan 13, 1994 prototype) | 13 January 1994 18:05:22 | Game Gear | Action Platformer | false |
| Aladdin (Jan 24, 1994 prototype) | 24 January 1994 19:34:02 | Game Gear | Action Platformer | false |
| Aladdin (Jul 31, 1993 prototype) | 31 July 1993 17:46:24 | Sega Mega Drive | Platformer | false |
| Aladdin (SNES prototype) | | SNES | | false |
| Aladdin's Cave (Commodore 64 prototype A) | | Commodore 64 | Platform | true |
| Aladdin's Cave (Commodore 64 prototype B) | | Commodore 64 | Platformer | true |
| Alan Wake (Jan 11, 2010 prototype) | 11 January 2010 | Xbox 360 | Adventure | false |
| Alan Wake (Mar 25, 2010 prototype) | 25 March 2010 21:49:43 | Xbox 360 | Adventure | false |
| Alan Wake (The Writer DLC Sep 15, 2010 prototype) | 15 September 2010 06:40:00 | Xbox 360 | Shooter, Action-Adventure | false |
| Alan Wake: American Nightmare (May 18, 2011 prototype) | 18 May 2011 | Xbox 360 | Adventure | false |
| Alex Kidd: High-Tech World (Prototype) | | Sega Master System | Action | false |
| Alfred Chicken (Dec 3, 2001 prototype) | 3 December 2001 | PlayStation | Platform | false |
| Alfred Chicken (ECTS Show 1993 Prototype) | | Amiga | Platform | false |
| Alfred Chicken (Jan 25, 2002 prototype) | 25 January 2002 12:52:42 | PlayStation | Platformer | false |
| Alfred Chicken (Jul 14, 1994 prototype) | 14 July 1994 | Sega Mega Drive | Platformer | true |
| Alfred Chicken (Prototype) | | Game Boy | Platformer | false |
| Alfred Chicken (SNES prototype) | | SNES | Platformer | false |
| Alias (Dec 12, 2003 prototype) | 12 December 2003 17:27:53 | PlayStation 2 | Action Adventure | false |
| Alias (Dec 8, 2003 prototype) | 8 December 2003 19:25:10 | PlayStation 2 | Action Adventure | false |
| Alias (Feb 6, 2004 prototype) | 6 February 2004 15:11:22 | Xbox | Action-Adventure | false |
| Alias (Jan 10, 2004 prototype) | 10 January 2004 13:46:45 | PlayStation 2 | Action Adventure | false |
| Alias (Jan 12, 2004 prototype) | 12 January 2004 15:56:29 | PlayStation 2 | Action Adventure | false |
| Alias (Jan 14, 2003 prototype) | 14 January 2003 12:46:10 | PlayStation 2 | Action Adventure | false |
| Alias (Jan 24, 2004 11.29 prototype) | 24 January 2004 11:29:42 | PlayStation 2 | Action Adventure | false |
| Alias (Jan 24, 2004 13.45 prototype) | 24 January 2004 13:45:06 | PlayStation 2 | Action Adventure | false |
| Alias (Jan 28, 2004 16.08 Casino Scripts prototype) | 28 January 2004 16:08:56 | PlayStation 2 | Action Adventure | false |
| Alias (Jan 28, 2004 16.08 prototype) | 28 January 2004 16:08:56 | PlayStation 2 | Action Adventure | false |
| Alias (Jan 5, 2004 prototype) | 5 January 2004 15:48:28 | PlayStation 2 | Action Adventure | false |
| Alias (Nov 11, 2003 prototype) | 11 November 2003 21:42:19 | PlayStation 2 | Action Adventure | false |
| Alias (Nov 14, 2003 prototype) | 14 November 2003 17:57:44 | PlayStation 2 | Action Adventure | false |
| Alias (Nov 17, 2003 prototype) | 17 November 2003 16:11:37 | PlayStation 2 | Action Adventure | false |
| Alias (Nov 21, 2003 prototype) | 21 November 2003 16:18:50 | PlayStation 2 | Action Adventure | false |
| Alias (Nov 25, 2003 prototype) | 25 November 2003 19:54:12 | PlayStation 2 | Action Adventure | false |
| Alias (Nov 4, 2002 prototype) | 4 November 2002 19:13:28 | PlayStation 2 | Action Adventure | false |
| Alias (Nov 5, 2002 11.53 prototype) | 5 November 2002 11:53:40 | PlayStation 2 | Action Adventure | false |
| Alias (Nov 5, 2002 12.56 prototype) | 5 November 2002 12:56:24 | PlayStation 2 | Action Adventure | false |
| Alias (Oct 10, 2003 prototype) | 10 October 2003 18:32:52 | Xbox | Action-Adventure | false |
| Alias (Oct 11, 2003 prototype) | 11 October 2003 10:29:54 | PlayStation 2 | Action Adventure | false |
| Alias (Oct 19, 2003 prototype) | 19 October 2003 13:38:10 | PlayStation 2 | Action Adventure | false |
| Alias (Oct 3, 2003 prototype) | 3 October 2003 16:05:23 | PlayStation 2 | Action Adventure | false |
| Alias (Sep 25, 2003 prototype) | 25 September 2003 16:32:01 | PlayStation 2 | Action Adventure | false |
| Alice: Madness Returns (Apr 4, 2011 prototype) | 4 April 2011 | Xbox 360 | Action-adventure | false |
| Alice: Madness Returns (Nov 17, 2010 Prototype) | 17 November 2010 | Xbox 360 | Platformer, Action-Adventure | false |
| Alice: Madness Returns (Sep 16, 2010 Prototype) | 16 September 2010 | Xbox 360 | Platformer, Action-Adventure | false |
| Alien 3 (ANTHROX prototype) | | SNES | Action | false |
| Alien 3 (FAIRLIGHT prototype) | | SNES | Action | false |
| Alien 3 (PARADOX prototype) | | SNES | Action | false |
| Alien Breed 2: Assault (Jan 11, 2010 prototype) | 11 January 2010 | Xbox 360 | Shooter | false |
| Alien Breed 2: Assault (Nov 20, 2009 prototype) | 20 November 2009 15:16:29 | Xbox 360 | Shooter | false |
| Alien Breed 3: Descent (Jul 16, 2010 prototype) | 16 July 2010 | Xbox 360 | Shooter | false |
| Alien Breed Evolution (Nov 12, 2009 prototype) | 12 November 2009 | Xbox 360 | Action, Shooter, Dual-Joystick Shooter | false |
| Alien Friends (prototype) | | Nintendo DS | Virtual pet | true |
| Alien Front (Mar 26, 2004 prototype) | 26 March 2004 | N-Gage | Action | true |
| Alien Hominid (Milestone 4 prototype) | | Gizmondo | | true |
| Alien Hominid (Sep 24, 2004 prototype) | 24 September 2004 08:40:10 | PlayStation 2 | Shoot-em-Up | false |
| Alien Hominid HD (DLC PDA Games Level Pack | | Xbox 360 | Shooter | true |
| Alien Hominid HD (DLC PDA Games Level Pack prototype) | | Xbox 360 | Shooter | true |
| Alien Hominid HD (Feb 8, 2007 prototype) | 8 February 2007 | Xbox 360 | Shooter | false |
| Alien Olympics 2044 AD (Prototype) | | Game Boy | Sports | false |
| Alien Quarantine (prototype) | | Java ME | Action | false |
| Alien Resurrection (Apr 11, 2000 prototype) | 11 April 2000 05:25:30 | PlayStation | First-person shooter | false |
| Alien Resurrection (Aug 19, 1999 prototype) | 19 August 1999 16:30:58 | PlayStation | First-person shooter | false |
| Alien Resurrection (Aug 8, 2000 prototype) | 8 August 2000 01:43:58 | PlayStation | First Person Shooter | false |
| Alien Resurrection (Dec 2, 1998 prototype) | 2 December 1998 01:02:39 | PlayStation | First-person shooter | false |
| Alien Resurrection (Dec 21, 1999 prototype) | 21 December 1999 12:27:00 | PlayStation | First-person shooter | false |
| Alien Resurrection (Feb 2, 2000 prototype) | 2 February 2000 03:07:08 | PlayStation | First-person shooter | false |
| Alien Resurrection (Feb 26, 2000 prototype) | 26 February 2000 03:08:58 | PlayStation | First-person shooter | false |
| Alien Resurrection (Feb 4, 2000 prototype) | 4 February 2000 03:41:52 | PlayStation | First-person shooter | false |
| Alien Resurrection (Jan 5, 2000 prototype) | 5 January 2000 10:35:10 | PlayStation | First-person shooter | false |
| Alien Resurrection (Jul 14, 1999 Prototype) | 14 July 1999 | PlayStation | | false |
| Alien Resurrection (Jul 19, 2000 prototype) | 19 July 2000 11:45:14 | PlayStation | First-person shooter | false |
| Alien Resurrection (Jul 29, 2000 prototype) | 29 July 2000 01:45:40 | PlayStation | First-person shooter | false |
| Alien Resurrection (Jul 31, 2000 prototype) | 31 July 2000 02:18:24 | PlayStation | First-person shooter | false |
| Alien Resurrection (Jul 4, 2000 prototype) | 4 July 2000 02:31:26 | PlayStation | First-person shooter | false |
| Alien Resurrection (Jul 5, 2000 prototype) | 5 July 2000 10:29:48 | PlayStation | First-person shooter | false |
| Alien Resurrection (Jul 7, 2000 prototype) | 7 July 2000 03:41:50 | PlayStation | First-person shooter | false |
| Alien Resurrection (Mar 24, 2000 prototype) | 24 March 2000 03:15:16 | PlayStation | First-person shooter | false |
| Alien Resurrection (Mar 7, 2000 prototype) | 7 March 2000 02:54:34 | PlayStation | First-person shooter | false |
| Alien Resurrection (Mar 9, 2000 prototype) | 9 March 2000 01:38:42 | PlayStation | First-person shooter | false |
| Alien Resurrection (May 12, 1999 prototype) | 12 May 1999 04:37:02 | PlayStation | First-person shooter | false |
| Alien Resurrection (May 26, 2000 prototype) | 26 May 2000 03:42:44 | PlayStation | First-person shooter | false |
| Alien Resurrection (May 30, 2000 prototype) | 30 May 2000 05:38:46 | PlayStation | First-person shooter | false |
| Alien Resurrection (May 6, 2000 prototype) | 6 May 2000 03:00:44 | PlayStation | First-person shooter | false |
| Alien Resurrection (Nov 2, 1998 prototype) | 2 November 1998 15:57:56 | PlayStation | First-person shooter | false |
| Alien Resurrection (Nov 26, 1999 Prototype) | 26 November 1999 | PlayStation | Third Person Shooter | false |
| Alien Resurrection (Oct 19, 1998 prototype) | 19 October 1998 13:26:22 | PlayStation | First-person shooter | false |
| Alien Resurrection (Oct 4, 2000 prototype) | 4 October 2000 02:37:32 | PlayStation | First-person shooter | false |
| Alien Resurrection (Sep 1, 2000 prototype) | 1 September 2000 12:15:18 | PlayStation | First-person shooter | false |
| Alien Syndrome (Apr 11, 2007 prototype) | 11 April 2007 | PlayStation Portable | Shoot 'Em Up | false |
| Alien Syndrome (May 21, 2007 prototype) | 21 May 2007 | Nintendo Wii | Action | false |
| Alien Syndrome (Prototype) | | Sega Master System | Action | false |
| Alien Trilogy (Jul 23, 1996 prototype) | 23 July 1996 | Sega Saturn | First-person shooter | false |
| Alien vs Predator (Apr 8, 1994 prototype) | 8 April 1994 | Atari Jaguar | FPS | false |
| Alien vs Predator (Aug 18, 1993 prototype) | 18 August 1993 | Atari Jaguar | FPS | false |
| Alien vs Predator (Oct 13, 1993 prototype) | 13 October 1993 | Atari Jaguar | FPS | false |
| Aliens (Jan 22, 2004 prototype) | 22 January 2004 10:12:05 | PlayStation 2 | Tech demo | true |
| Aliens (Prototype) | | FDS | Action | true |
| Aliens Versus Predator: Extinction (May 2, 2003 prototype) | 2 May 2003 01:45:01 | Xbox | Real-Time Strategy | false |
| Aliens vs Predator (Jan 29, 1999 prototype) | 29 January 1999 | PC | Shooter | false |
| Aliens vs. Predator (Aug 20, 2009 prototype) | 20 August 2009 15:25:59 | Xbox 360 | First Person Shooter | false |
| Aliens vs. Predator (Aug 3, 2009 prototype) | 3 August 2009 01:50:27 | Xbox 360 | First Person Shooter | false |
| Aliens vs. Predator (Dec 15, 2009 prototype) | 15 December 2009 | Xbox 360 | First-person shooter | false |
| Aliens vs. Predator (Dec 2, 2009 prototype) | 2 December 2009 00:00:00 | Xbox 360 | First Person Shooter | false |
| Aliens vs. Predator (Feb 15, 2010 Patch Data prototype) | 15 February 2010 16:48:00 | PlayStation 3 | First-Person Shooter | false |
| Aliens vs. Predator (Jan 11, 2010 prototype) | 11 January 2010 00:00:00 | Xbox 360 | First Person Shooter | false |
| Aliens vs. Predator (Jul 13, 2009 prototype) | 13 July 2009 01:40:39 | Xbox 360 | First Person Shooter | false |
| Aliens vs. Predator (Jul 21, 2008 prototype) | 21 July 2008 08:59:59 | Xbox 360 | First Person Shooter | false |
| Aliens vs. Predator (May 26, 2009 prototype) | 26 May 2009 | Xbox 360 | FPS | false |
| Aliens vs. Predator (Nov 17, 2008 prototype) | 17 November 2008 10:50:19 | Xbox 360 | First Person Shooter | false |
| Aliens vs. Predator (Oct 6, 2008 prototype) | 6 October 2008 12:27:35 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Apr 10, 2012 prototype) | 10 April 2012 08:34:45 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Apr 12, 2012 prototype) | 12 April 2012 08:32:37 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Apr 16, 2012 01.11 prototype) | 16 April 2012 01:11:20 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Apr 16, 2012 15.53 prototype) | 16 April 2012 15:53:24 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Apr 17, 2012 prototype) | 17 April 2012 08:20:47 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Apr 18, 2012 prototype) | 18 April 2012 15:24:41 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Apr 19, 2012 08.19 prototype) | 19 April 2012 08:19:02 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Apr 19, 2012 19.27 prototype) | 19 April 2012 19:27:34 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Apr 2, 2012 prototype) | 2 April 2012 01:45:09 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Apr 20, 2012 prototype) | 20 April 2012 07:20:11 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Apr 23, 2012 prototype) | 23 April 2012 01:06:32 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Apr 24, 2012 prototype) | 24 April 2012 19:17:42 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Apr 25, 2012 08.35 prototype) | 25 April 2012 08:35:46 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Apr 25, 2012 21.15 prototype) | 25 April 2012 21:15:44 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Apr 26, 2012 prototype) | 26 April 2012 15:45:26 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Apr 27, 2012 prototype) | 27 April 2012 08:16:35 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Apr 3, 2012 prototype) | 3 April 2012 09:04:11 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Apr 30, 2012 prototype) | 30 April 2012 07:32:25 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Apr 5, 2012 prototype) | 5 April 2012 08:49:05 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Apr 6, 2012 prototype) | 6 April 2012 14:57:13 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Aug 10, 2012 prototype) | 10 August 2012 06:34:35 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Aug 16, 2011 prototype) | 16 August 2011 18:34:53 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Aug 31, 2012 prototype) | 31 August 2012 07:11:30 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Aug 4, 2011 prototype) | 4 August 2011 16:28:01 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Aug 7, 2012 prototype) | 7 August 2012 19:13:16 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Aug 9, 2011 prototype) | 9 August 2011 08:29:58 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Dec 1, 2011 prototype) | 1 December 2011 17:38:10 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Dec 14, 2012 prototype) | 14 December 2012 00:11:09 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Dec 17, 2011 prototype) | 17 December 2011 09:59:14 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Dec 23, 2011 prototype) | 23 December 2011 10:24:36 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Feb 1, 2012 prototype) | 1 February 2012 10:26:45 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Feb 10, 2012 prototype) | 10 February 2012 22:40:48 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Feb 11, 2011 prototype) | 11 February 2011 07:33:15 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Feb 14, 2012 prototype) | 14 February 2012 10:14:28 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Feb 15, 2012 prototype) | 15 February 2012 15:27:36 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Feb 2, 2012 01.59 prototype) | 2 February 2012 01:59:21 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Feb 2, 2012 10.31 prototype) | 2 February 2012 10:31:15 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Feb 20, 2012 prototype) | 20 February 2012 02:03:23 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Feb 21, 2012 prototype) | 21 February 2012 10:15:54 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Feb 22, 2012 prototype) | 22 February 2012 10:53:06 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Feb 24, 2012 prototype) | 24 February 2012 10:12:28 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Feb 28, 2012 prototype) | 28 February 2012 05:24:46 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Feb 3, 2012 prototype) | 3 February 2012 10:03:29 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Feb 5, 2011 prototype) | 5 February 2011 07:32:04 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Feb 6, 2011 prototype) | 6 February 2011 07:32:26 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Feb 7, 2012 prototype) | 7 February 2012 10:05:01 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Feb 8, 2011 prototype) | 8 February 2011 07:33:03 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Feb 8, 2012 prototype) | 8 February 2012 10:18:14 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Feb 9, 2011 prototype) | 9 February 2011 10:00:30 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Feb 9, 2012 18.00 prototype) | 9 February 2012 18:00:49 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Feb 9, 2012 23.19 prototype) | 9 February 2012 23:19:39 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Jan 12, 2012 prototype) | 12 January 2012 10:07:35 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Jan 20, 2012 prototype) | 20 January 2012 10:01:18 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Jan 27, 2012 prototype) | 27 January 2012 18:27:36 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Jan 31, 2012 prototype) | 31 January 2012 05:33:49 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Jan 9, 2012 prototype) | 9 January 2012 10:01:50 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Jul 10, 2012 prototype) | 10 July 2012 05:10:45 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Jul 11, 2012 prototype) | 11 July 2012 05:10:57 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Jul 18, 2012 prototype) | 18 July 2012 05:14:26 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Jul 19, 2011 prototype) | 19 July 2011 15:33:30 | Xbox 360 | FPS | false |
| Aliens: Colonial Marines (Jul 27, 2012 prototype) | 27 July 2012 05:41:18 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Jul 28, 2011 prototype) | 28 July 2011 16:10:09 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Jul 29, 2011 prototype) | 29 July 2011 10:05:40 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Jun 14, 2011 prototype) | 14 June 2011 17:27:32 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Jun 14, 2012 06.01 prototype) | 14 June 2012 06:01:33 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Jun 14, 2012 06.53 prototype) | 14 June 2012 06:53:46 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Jun 22, 2012 prototype) | 22 June 2012 05:36:11 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Jun 28, 2012 prototype) | 28 June 2012 05:32:00 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Mar 1, 2012 prototype) | 1 March 2012 10:14:25 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Mar 10, 2011 prototype) | 10 March 2011 10:27:05 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Mar 13, 2012 prototype) | 13 March 2012 09:18:30 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Mar 16, 2012 prototype) | 16 March 2012 18:05:55 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Mar 19, 2012 prototype) | 19 March 2012 08:04:20 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Mar 2, 2012 prototype) | 2 March 2012 10:14:52 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Mar 20, 2012 prototype) | 20 March 2012 09:21:56 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Mar 21, 2012 prototype) | 21 March 2012 09:41:24 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Mar 23, 2012 prototype) | 23 March 2012 08:46:23 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Mar 24, 2011 prototype) | 24 March 2011 08:52:52 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Mar 28, 2012 prototype) | 28 March 2012 17:32:05 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Mar 29, 2012 prototype) | 29 March 2012 08:44:39 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Mar 9, 2012 prototype) | 9 March 2012 10:21:12 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (May 1, 2012 prototype) | 1 May 2012 08:42:10 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (May 12, 2011 prototype) | 12 May 2011 12:02:03 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (May 2, 2011 prototype) | 2 May 2011 20:42:03 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (May 29, 2012 prototype) | 29 May 2012 05:45:34 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (May 3, 2012 prototype) | 3 May 2012 08:28:37 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (May 31, 2012 prototype) | 31 May 2012 16:09:48 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (May 4, 2011 prototype) | 4 May 2011 | Xbox 360 | FPS | false |
| Aliens: Colonial Marines (May 4, 2012 prototype) | 4 May 2012 08:27:02 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (May 7, 2012 prototype) | 7 May 2012 01:15:09 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (May 8, 2012 prototype) | 8 May 2012 08:23:50 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Nov 1, 2012 prototype) | 1 November 2012 08:13:42 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Nov 13, 2012 16.24 prototype) | 13 November 2012 16:24:32 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Nov 13, 2012 20.35 prototype) | 13 November 2012 20:35:24 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Nov 15, 2011 prototype) | 15 November 2011 18:02:13 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Nov 16, 2011 10.29 prototype) | 16 November 2011 10:29:33 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Nov 16, 2011 14.27 prototype) | 16 November 2011 14:27:45 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Nov 17, 2011 prototype) | 17 November 2011 10:05:51 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Nov 19, 2012 prototype) | 19 November 2012 20:50:22 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Nov 2, 2011 prototype) | 2 November 2011 09:35:27 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Nov 21, 2011 prototype) | 21 November 2011 10:00:50 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Nov 29, 2011 prototype) | 29 November 2011 10:02:58 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Nov 29, 2012 prototype) | 29 November 2012 22:07:32 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Nov 7, 2011 prototype) | 7 November 2011 10:03:01 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Oct 10, 2012 prototype) | 10 October 2012 06:43:33 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Oct 15, 2012 prototype) | 15 October 2012 06:43:55 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Oct 22, 2012 prototype) | 22 October 2012 06:48:06 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Oct 23, 2012 10.29 prototype) | 23 October 2012 10:29:04 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Oct 23, 2012 21.03 prototype) | 23 October 2012 21:03:46 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Oct 24, 2012 prototype) | 24 October 2012 07:49:29 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Oct 3, 2011 prototype) | 3 October 2011 08:43:17 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Oct 5, 2012 prototype) | 5 October 2012 06:42:24 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Oct 8, 2012 prototype) | 8 October 2012 06:42:17 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Oct 9, 2012 06.43 prototype) | 9 October 2012 06:43:35 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Oct 9, 2012 21.38 prototype) | 9 October 2012 21:38:33 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (PS3 prototype) | | PlayStation 3 | First-Person Shooter | false |
| Aliens: Colonial Marines (Sep 13, 2011 prototype) | 13 September 2011 15:12:40 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Sep 24, 2011 prototype) | 24 September 2011 08:48:00 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Sep 25, 2012 prototype) | 25 September 2012 07:04:02 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Sep 29, 2011 prototype) | 29 September 2011 08:46:31 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Sep 30, 2011 prototype) | 30 September 2011 09:34:58 | Xbox 360 | First Person Shooter | false |
| Aliens: Colonial Marines (Sep 6, 2012 prototype) | 6 September 2012 00:00:00 | Xbox 360 | First Person Shooter | false |
| All Kamen Rider: Rider Generation (Jun 2, 2011 prototype) | 2 June 2011 | Nintendo DS | | false |
| All Round Hunter (Apr 16, 2010 prototype) | 16 April 2010 | Xbox 360 | Hunting/Fishing | false |
| All Round Hunter (Apr 20, 2010 prototype) | 20 April 2010 | Xbox 360 | Hunting/Fishing | false |
| All Round Hunter (Mar 5, 2010 prototype) | 5 March 2010 | Xbox 360 | Hunting/Fishing | false |
| All Star Soccer (May 26, 1997 prototype) | 26 May 1997 | PlayStation | | false |
| All Star Tennis 2000 (Localization prototype) | | Game Boy Color | Sports | false |
| All Star Tennis 2000 (Prototype) | | Game Boy Color | Sports | false |
| All Star Tennis 2000 (Sep 13, 1999 prototype) | 13 September 1999 19:06:30 | Game Boy Color | Sports | false |
| All Zombies Must Die! (Oct 10, 2011 prototype) | 10 October 2011 09:47:50 | Xbox 360 | Shooter | false |
| All-Pro Football 2K8 (Jul 11, 2007 prototype) | 11 July 2007 22:06:37 | Xbox 360 | Sports - Football | false |
| All-Star Baseball 2001 (Broken prototype) | | Nintendo 64 | Sports | false |
| All-Star Baseball 2001 (Prototype) | | Nintendo 64 | Sports | false |
| All-Star Baseball 2003 featuring Derek Jeter (Jan 16, 2002 prototype) | 16 January 2002 | Nintendo GameCube | Sports | false |
| All-Star Baseball 2003 featuring Derek Jeter (Jan 21, 2002 prototype) | 21 January 2002 11:15:18 | Xbox | Sports | false |
| All-Star Baseball 2003 featuring Derek Jeter (May 23, 2002 build) | 23 May 2002 | Xbox | Baseball | false |
| All-Star Baseball 2004 featuring Derek Jeter (Dec 16, 2002 00.08 prototype) | 16 December 2002 00:08:07 | Xbox | Sports | false |
| All-Star Baseball 2004 featuring Derek Jeter (Dec 16, 2002 prototype) | 16 December 2002 14:37:16 | PlayStation 2 | Sports - Baseball | false |
| All-Star Baseball 2004 featuring Derek Jeter (Jan 20, 2003 prototype) | 20 January 2003 10:49:15 | Xbox | Sports | false |
| All-Star Baseball 2005 featuring Derek Jeter (Feb 4, 2004 prototype) | 4 February 2004 23:20:43 | Xbox | Sports | false |
| Alligator People (prototype) | | Atari 2600 | | true |
| Alone In The Dark: The New Nightmare (Jan 31, 2001 prototype) | 31 January 2001 | PlayStation | Adventure | false |
| Alone in the Dark (Apr 8, 2008 prototype) | 8 April 2008 00:00:00 | Xbox 360 | Action Adventure | false |
| Alone in the Dark (May 9, 2008 prototype) | 9 May 2008 00:00:00 | Xbox 360 | Action Adventure | false |
| Alone in the Dark: One-Eyed Jack's Revenge (Mar 21, 1996 prototype) | 21 March 1996 19:35:31 | Sega Saturn | Survival Horror | false |
| Alone in the Dark: The New Nightmare (Apr 9, 2001 prototype) | 9 April 2001 03:56:32 | Dreamcast | Action-adventure | false |
| Alone in the Dark: The New Nightmare (February 21, 2001 prototype) | 21 February 2001 | Game Boy Color | Action-adventure | false |
| Alone in the Dark: The New Nightmare (May 23, 2001 prototype) | 23 May 2001 21:16:16 | Dreamcast | Survival | false |
| Alone in the Dark: The New Nightmare (Prototype) | | Game Boy Color | Survival Horror | false |
| Alpha Beam with Ernie (Dec 22, 1982 prototype) | 22 December 1982 | Atari 2600 | Edutainment | false |
| Alpha Beam with Ernie (May 5, 1983 prototype) | 5 May 1983 | Atari 2600 | Edutainment | false |
| Alpha Mission (Japanese prototype) | | NES | Shoot 'em up | false |
| Alpha Protocol (Mar 25, 2010 prototype) | 25 March 2010 | Xbox 360 | Action role-playing | false |
| Alpha Protocol (May 4, 2009 prototype) | 4 May 2009 | Xbox 360 | Action role-playing | false |
| Alter Echo (Jun 4, 2003 prototype) | 4 June 2003 04:46:36 | PlayStation 2 | Action Adventure | false |
| Altered Beast (Mar 31, 2009 prototype) | 31 March 2009 | Xbox 360 | Action, Brawler, Platformer | false |
| Altered Space: A 3-D Alien Adventure (Feb 15, 1991 prototype) | 15 February 1991 | Game Boy | Adventure | false |
| Amazing Spider-Man vs The Kingpin (Jun 2, 1993 prototype) | 2 June 1993 21:03:58 | Sega CD | Action | false |
| Ameisenbar (prototype) | | Commodore 64 | Arcade | true |
| America's Army: Rise of a Soldier (Oct 5, 2005 prototype) | 5 October 2005 16:30:19 | Xbox | First Person Shooter | false |
| America's Army: Rise of a Soldier (Sep 9, 2005 prototype) | 9 September 2005 00:46:55 | Xbox | First Person Shooter | false |
| American Dragon: Jake Long - Rise of the Huntsclan (Apr 25, 2006 prototype) | 25 April 2006 | Game Boy Advance | | false |
| American Dragon: Jake Long - Rise of the Huntsclan (Dec 10, 2005 prototype) | 10 December 2005 | Game Boy Advance | | false |
| American Dragon: Jake Long - Rise of the Huntsclan (Dec 27, 2005 prototype) | 28 November 2005 14:27:00 | Game Boy Advance | | false |
| American Dragon: Jake Long - Rise of the Huntsclan (Feb 7, 2006 prototype) | 7 February 2006 15:45:00 | Game Boy Advance | | false |
| American Dragon: Jake Long - Rise of the Huntsclan (May 22, 2006 prototype) | 22 May 2006 15:21:24 | Game Boy Advance | | false |
| American Dragon: Jake Long - Rise of the Huntsclan (Nov 28, 2005 prototype) | 28 November 2005 13:56:00 | Game Boy Advance | | false |
| American Dragon: Jake Long - Rise of the Huntsclan (Nov 3, 2005 prototype) | 3 November 2005 | Game Boy Advance | | false |
| American Dragon: Jake Long - Rise of the Huntsclan (Oct 4, 2005 prototype) | 4 October 2005 21:47:00 | Game Boy Advance | | false |
| American Hero CD (Prototype) | | Atari Jaguar CD | FMV | true |
| American Idol (Mar 10, 2004 prototype) | 10 March 2004 15:38:40 | Xbox | Music, Rhythm | true |
| American McGee's Alice (Nov 27, 2000 prototype) | 27 November 2000 | PC | Puzzle, Platformer, Action-Adventure | false |
| Amparo Museum (Jul 24, 1992 prototype) | 24 July 1992 09:50:43 | Philips CD-i | Reference | false |
| Amped (Oct 17, 2001 prototype) | 17 October 2001 22:53:05 | Xbox | Sports - Snowboarding | false |
| Amped 2 (Oct 2, 2003 prototype) | 2 October 2003 21:55:11 | Xbox | Sports - Snowboarding | false |
| Amped 2 (Sep 12, 2003 prototype) | 12 September 2003 03:06:42 | Xbox | Sports - Snowboarding | false |
| Amped 2 (Sep 22, 2003 prototype) | 22 September 2003 12:37:17 | Xbox | Sports - Snowboarding | false |
| Amped 2 (Sep 30, 2003 prototype) | 30 September 2003 13:29:03 | Xbox | Extreme sports | false |
| Amped 3 (Oct 18, 2005 prototype) | 18 October 2005 23:40:22 | Xbox 360 | Sports - Snowboarding | false |
| Amped: Freestyle Snowboarding (Jan 17, 2002 prototype) | 17 January 2002 | Xbox | Sports, Snowboarding/Skiing | false |
| Amplitude (Feb 7, 2003 prototype) | 7 February 2003 21:12:22 | PlayStation 2 | Rhythm | false |
| Amplitude (May 27, 2003 prototype) | 27 May 2003 11:49:56 | PlayStation 2 | Music | false |
| Anachronox (May 13, 2001 Prototype) | 13 May 2001 | PC | RPG | false |
| Ancient Wars: Sparta (Dec 19, 2006 demo) | | PC | Strategy, Real-Time Strategy | false |
| Ancients of Ooga (April 27, 2010 prototype) | 27 April 2010 | Xbox 360 | Puzzle | false |
| Ancients of Ooga (Dec 9, 2009 prototype) | 9 December 2009 19:56:02 | Xbox 360 | Puzzle, Platformer | false |
| Andre Agassi Tennis (Prototype) | | Game Gear | Sports - Tennis | false |
| Androman on the Moon (prototype) | | Atari 2600 | | true |
| Angels 2: Holy Night (Prototype) | | TurboGrafx-CD | Adventure | true |
| Angry Birds Trilogy (Europe Debug Patch) | | PlayStation 3 | Compilation, Puzzle | false |
| Angry Birds Trilogy (May 19, 2013 prototype) | 19 May 2013 | PlayStation 3 | Compilation, Puzzle | false |
| Angry Birds: Star Wars (Sep 13, 2013 prototype) | 13 September 2013 | PlayStation 3 | Puzzle | false |
| Angry Birds: Star Wars (Sep 19, 2013 prototype) | 19 September 2013 | PlayStation 3 | Puzzle | false |
| Angry Birds: Star Wars (Sep 9, 2013 prototype) | 9 September 2013 | PlayStation 3 | Puzzle | false |
| Animal Color Cross (Prototype) | | Nintendo DS | | false |
| Animal Crossing: Wild World (Apr 10, 2006 EU Broadcast Version) | 10 April 2006 09:36:00 | Nintendo DS | Life simulation | false |
| Animal Crossing: Wild World (Dec 22, 2005 USA Relay Version) | 22 December 2005 11:44:00 | Nintendo DS | Life simulation | false |
| Animal Crossing: Wild World (Feb 2, 2006 EU Kiosk Demo) | 7 February 2006 10:33:47 | Nintendo DS | Life simulation | false |
| Animaniacs (Jun 11, 1994 prototype) | 11 June 1994 | SNES | Platformer | false |
| Anomaly: Warzone Earth (Nov 25, 2011 prototype) | 25 November 2011 | Xbox 360 | Real Time Strategy | false |
| Antz (Prototype) | | Game Boy Color | Action | false |
| Ape Escape 2 (Apr 8, 2003 prototype) | 8 April 2003 21:59:30 | PlayStation 2 | Platformer | false |
| Ape Escape 2 (Oct 28, 2002 prototype) | 28 October 2002 00:53:30 | PlayStation 2 | Action | false |
| Apex (Dec 18, 2002 prototype) | 18 December 2002 | Xbox | Driving/Racing | false |
| Apocalypse (Jul 22, 1998 prototype) | 22 July 1998 13:12:42 | PlayStation | Third-person shooter | false |
| Apocalypse II (Oct 28, 1997 prototype) | 28 October 1997 09:24:52 | SNES | Shooter | true |
| Apocalypse II (Prototype) | | SNES | Shooter | true |
| Apprentice (Commodore 64 prototype) | | Commodore 64 | Platform | true |
| Aqua (Apr 26, 2010 prototype) | 26 April 2010 | Xbox 360 | Action shooter | false |
| Aqua (Jan 11, 2010 prototype) | 11 January 2010 13:43:00 | Xbox 360 | Shoot 'Em Up | false |
| Aqua (Jan 12, 2010 prototype) | 12 January 2010 17:22:03 | Xbox 360 | Shoot 'Em Up | false |
| Aqua (Nov 5, 2009 prototype) | 5 November 2009 16:05:09 | Xbox 360 | Shoot 'Em Up | false |
| Aqua GT (Nov 16, 2000 prototype) | 16 November 2000 14:42:36 | PlayStation | Racing | false |
| Aquaventure (Aug 12, 1983 prototype) | 12 August 1983 | Atari 2600 | | true |
| Ar tonelico II: Melody of Metafalica (Sep 22, 2008 prototype) | 22 September 2008 19:23:10 | PlayStation 2 | Role-playing | false |
| Ar tonelico: Melody of Elemia (Sep 13, 2006 prototype) | 13 September 2006 10:41:58 | PlayStation 2 | Role-playing | false |
| Arabian Knights: Sabaku no Seirei Ou (Prototype) | | SNES | Role Playing | false |
| Arc the Lad Collection: The Making of Arc the Lad (Nov 20, 2001 prototype) | 20 November 2001 | PlayStation | RPG | false |
| Arc the Lad: End of Darkness (Apr 22, 2005 prototype) | 22 April 2005 12:59:04 | PlayStation 2 | Action Role-playing | false |
| Arc the Lad: End of Darkness (Jan 11, 2005 prototype) | 11 January 2005 16:00:02 | PlayStation 2 | Action Role-playing | false |
| Arc the Lad: Twilight of the Spirits (Apr 1, 2003 prototype) | 1 April 2003 21:03:53 | PlayStation 2 | Turn Based Tactics | false |
| Arc the Lad: Twilight of the Spirits (Aug 22, 2002 prototype) | 22 August 2002 07:34:28 | PlayStation 2 | | false |
| Arc the Lad: Twilight of the Spirits (Feb 24, 2003 prototype) | 24 February 2003 | PlayStation 2 | Turn Based Tactics | false |
| Arc the Lad: Twilight of the Spirits (Nov 18, 2003 prototype) | 18 November 2003 05:17:12 | PlayStation 2 | | false |
| Arcade Classics (Sep 4, 1996 prototype) | 4 September 1996 | Philips CD-i | Compilation | false |
| Arcade's Greatest Hits: The Atari Collection 1 (Apr 11, 1997 prototype) | 11 April 1997 | SNES | Arcade | false |
| Arcade's Greatest Hits: The Atari Collection 1 (Feb 10, 1997 prototype) | 10 February 1997 | SNES | Arcade | false |
| Arcade's Greatest Hits: The Atari Collection 1 (Feb 11, 1997 prototype) | 11 February 1997 | SNES | Arcade | false |
| Arcade's Greatest Hits: The Atari Collection 1 (Nov 10, 1996 prototype) | 10 November 1996 00:00:00 | PlayStation | Compilation | false |
| Arcade's Greatest Hits: The Atari Collection 2 (Jan 8, 1998 prototype) | 8 January 1998 21:35:42 | PlayStation | Compilation | false |
| ArcadeSample (Oct 11, 2007 prototype) | 11 October 2007 | Xbox 360 | Sample | false |
| ArcadeSample (Oct 29, 2007 prototype) | 29 October 2007 | Xbox 360 | Arcade | true |
| Arcadia VI (Jun 24, 1991 prototype) | 24 June 1991 | NES | Arcade/Compilation | true |
| Arcana (prototype) | | SNES | Dungeon crawl | false |
| Arcania: Gothic 4 (Mar 30, 2010 prototype) | 30 March 2010 | Xbox 360 | Action role-playing | false |
| Arcanum: Of Steamworks & Magick Obscura (Mar 14, 2001 demo) | 14 March 2001 | PC | | false |
| Arcanum: Of Steamworks & Magick Obscura (Oct 9, 2000 prototype) | 9 October 2000 | PC | RPG | false |
| Arcatera: The Dark Brotherhood (Feb 24, 2000 prototype) | 24 February 2000 | PC | | false |
| Archimedean Dynasty (Oct 11, 1996 prototype) | 11 October 1996 | PC | | false |
| Archimedean Dynasty (Oct 16, 1996 prototype) | 16 October 1996 | PC | | false |
| Archon (Prototype B) | | NES | Strategy | false |
| Archon (Prototype) | | NES | General | false |
| Arctic Thunder (Aug 10, 2001 prototype) | 10 August 2001 08:24:50 | PlayStation 2 | Racing | false |
| Ardy Lightfoot (prototype) | | SNES | Platformer | false |
| Are You Smarter Than A 5th Grader? Make the Grade! (Aug 14, 2008 prototype) | 14 August 2008 | Xbox 360 | Trivia/Board Game | false |
| Area 51 (Aug 4, 2004 prototype) | 4 August 2004 16:20:15 | PlayStation 2 | First Person Shooter (Arcade) | false |
| Area 51 (Feb 25, 2005 prototype) | 25 February 2005 22:42:15 | PlayStation 2 | First Person Shooter (Arcade) | false |
| Area 51 (Jul 11, 1996 prototype) | 11 July 1996 15:02:40 | Sega Saturn | Rail Shooter | false |
| Area 51 (Jul 23, 2004 prototype) | 23 July 2004 20:17:31 | Xbox | First-Person Shooter, Survival Horror | false |
| Area 51 (Jun 19, 1996 prototype) | 19 June 1996 15:39:54 | Sega Saturn | Rail Shooter | false |
| Area 51 (Mar 9, 2005 prototype) | 9 March 2005 14:31:02 | PlayStation 2 | First-person shooter | false |
| Area 51 (Nov 6, 1996 prototype) | 6 November 1996 10:10:04 | Sega Saturn | Rail Shooter | false |
| Arena Football 95 (Prototype) | | Atari Jaguar | Sports | true |
| Aretha (prototype) | April 1993 | SNES | Role Playing | false |
| Aretha II: Ariel no Fushigi na Tabi (Early prototype) | | SNES | Role Playing | false |
| Aretha II: Ariel no Fushigi na Tabi (Prototype) | | SNES | Role Playing | false |
| Ariel the Little Mermaid (Oct 10, 1992 build) | 10 October 1992 10:27:54 | Sega Mega Drive | Adventure | false |
| Arkadian Warriors (Oct 6, 2007 prototype) | 6 October 2007 | Xbox 360 | Action Aventure | false |
| Arkanoid II (prototype) | | NES | Puzzle | false |
| Arkanoid Live! (Dec 23, 2008 prototype) | 23 December 2008 16:22:20 | Xbox 360 | Puzzle | false |
| Arkanoid Live! (Mar 3, 2009 prototype) | 3 March 2009 | Xbox 360 | Block-Breaking | false |
| Arkyology (prototype) | | Atari 2600 | | true |
| ArmA: Combat Operations (Mar 26, 2007 demo) | 26 March 2007 | PC | Action, Strategy, Simulation, First-Person Shooter, Vehicular Combat | false |
| Armalion (Dec 11, 2001 prototype) | 11 December 2001 | PC | RPG | true |
| Armalion (Sep 20, 2001 prototype) | 20 September 2001 | PC | RPG | true |
| Armed (Jan 22, 1997 prototype) | 22 January 1997 12:40:30 | Sega Saturn | Action | true |
| Armed and Dangerous (Jul 16, 2003 prototype) | 16 July 2003 17:32:21 | Xbox | Action-Adventure | false |
| Armed and Dangerous (Oct 13, 2003 prototype) | 13 October 2003 18:29:03 | Xbox | Shooter | false |
| Armed and Dangerous (Sep 3, 2003 prototype) | 3 September 2003 00:12:24 | Xbox | Action-Adventure | false |
| Armored Core (Jul 3, 1997 prototype) | 3 July 1997 22:40:54 | PlayStation | Vehicular Combat | false |
| Armored Core 2 (Aug 29, 2000 prototype) | 29 August 2000 | PlayStation 2 | Action | false |
| Armored Core 2 (Nov 13, 2000 prototype) | 13 November 2000 18:54:12 | PlayStation 2 | Action | false |
| Armored Core 2: Another Age (Jun 8, 2001 prototype) | 8 June 2001 03:59:28 | PlayStation 2 | Action | false |
| Armorines: Project S.W.A.R.M. (Oct 20, 1999 prototype) | 20 October 1999 | PlayStation | | false |
| Army Men: Green Rogue (Feb 15, 2001 prototype) | 15 February 2001 11:20:16 | PlayStation 2 | Action | false |
| Army Men: Lock 'n' Load (Jan 25, 2001 prototype) | 25 January 2001 22:14:28 | PlayStation | Shoot 'em up | false |
| Army Men: Omega Soldier (Jan 25, 2001 prototype) | 25 January 2001 | PlayStation | Shoot 'em up | false |
| Army Men: Sarge's Heroes 2 (Oct 19, 2000 prototype) | 19 October 2000 15:24:06 | PlayStation | Third Person Shooter | false |
| Army Men: World War (Mar 14, 2000 prototype) | 14 March 2000 14:56:38 | PlayStation | Third Person Shooter | false |
| Army of Two (DLC SSC Challenge Map Pack A prototype) | | Xbox 360 | Action, Shooter | false |
| Army of Two (DLC SSC Challenge Map Pack B prototype) | | Xbox 360 | Action, Shooter | false |
| Army of Two (Oct 7, 2007 prototype) | 7 October 2007 | Xbox 360 | Third-person shooter | false |
| Army of Two (Sep 13, 2007 prototype) | 13 September 2007 | Xbox 360 | Third-person shooter | false |
| Army of Two: The Devil's Cartel (Feb 21, 2013 prototype) | 21 February 2013 01:14:56 | Xbox 360 | Third Person Shooter | false |
| Army of Two: The Devil's Cartel (Jan 25, 2013 Prototype) | 25 January 2013 14:18:44 | Xbox 360 | Third Person Shooter | false |
| Army of Two: The Devil's Cartel (Jan 31, 2013 prototype) | 31 January 2013 | Xbox 360 | Third-person shooter | false |
| Arnold Palmer Tournament Golf (Mar 22, 1990 prototype) | 22 March 1990 10:33:32 | Sega Mega Drive | Sports | false |
| Around Hollywood (Apr 18, 1995 prototype) | 18 April 1995 | Philips CD-i | FMV | true |
| Art Alive (Sep 20, 1991 build) | 20 September 1991 10:19:06 | Sega Mega Drive | Studio | false |
| Art of Fighting (Aug 1, 1994 prototype) | 1 August 1994 13:42:44 | Sega Mega Drive | Fighter (2D) | false |
| Art of Fighting (Jul 11, 1994 prototype) | 12 July 1994 01:13:38 | Sega Mega Drive | Fighter (2D) | false |
| Art of Fighting (prototype) | | SNES | Fighting | false |
| Arthur and the Invisibles (Mar 19, 2007 prototype) | 19 March 2007 15:00:00 | PlayStation Portable | Adventure, Arcade | false |
| Arthur and the Minimoys (Jan 17, 2007 prototype) | 17 January 2007 | PlayStation Portable | | false |
| Arvoch Conflict (Jan 2, 2008 demo) | 2 January 2008 | PC | Action, Simulation, Shooter | false |
| Arx Fatalis (Jul 11, 2003 prototype) | 11 July 2003 | Xbox | Action role-playing game | false |
| Arx Fatalis (Sep 29, 2003 prototype) | 29 September 2003 | Xbox | | false |
| Ascend: Hand of Kul (Oct 02, 2012 prototype) | 2 October 2012 18:25:02 | Xbox 360 | Action, Role-Playing | false |
| Ashen (Mar 12, 2004 prototype) | 12 March 2004 | N-Gage | Action | false |
| Asheron's Call 2: Fallen Kings (Aug 30, 2002 prototype) | 30 August 2002 | PC | Action, Role-Playing, MMORPG | false |
| Asphalt 4: Elite Racing (EU A prototype) | | Nintendo DSi | Driving/Racing | false |
| Asphalt 4: Elite Racing (EU B prototype) | | Nintendo DSi | Driving/Racing | false |
| Asphalt 4: Elite Racing (JP JA prototype) | | Nintendo DSi | Driving/Racing | false |
| Asphalt 4: Elite Racing (JP KOR A prototype) | | Nintendo DSi | Driving/Racing | false |
| Asphalt 4: Elite Racing (JP KOR B prototype) | | Nintendo DSi | Driving/Racing | false |
| Asphalt 4: Elite Racing (JP KOR C prototype) | | Nintendo DSi | Driving/Racing | false |
| Asphalt 4: Elite Racing (USA A prototype) | | Nintendo DSi | Driving/Racing | false |
| Asphalt 4: Elite Racing (USA B prototype) | | Nintendo DSi | Driving/Racing | false |
| Asphalt: Urban GT (Aug 19, 2004 prototype) | 19 August 2004 | N-Gage | Racing | false |
| Assassin's Creed (Oct 16, 2007 prototype) | 16 October 2007 | Xbox 360 | Action | false |
| Assassin's Creed II (Aug 19, 2009 prototype) | 19 August 2009 | Java ME | Platformer, Action-Adventure | false |
| Assassin's Creed III (Apr 17, 2012 Multiplayer prototype) | 17 April 2012 | Xbox 360 | Action | false |
| Assassin's Creed III (E3 Demo) | | PlayStation 3 | Action-Adventure | false |
| Assassin's Creed III (EU Multiplayer Patch Data prototype) | | PlayStation 3 | Action-Adventure | false |
| Assassin's Creed III (List of Unplayable Builds) | | Xbox 360 | Action | false |
| Assassin's Creed III (May 3, 2012 Multiplayer prototype) | 3 May 2012 | Xbox 360 | Action | false |
| Assassin's Creed III (May 4, 2012 Multiplayer prototype) | 4 May 2012 | Xbox 360 | Action | false |
| Assassin's Creed III (Sep 25, 2012 prototype) | 25 September 2012 | Xbox 360 | Action | false |
| Assassin's Creed III (Sep 8, 2012 DLC Benedict Arnold prototype) | 8 September 2012 | Xbox 360 | Action-Adventure | true |
| Assassin's Creed III (Sep 8, 2012 prototype) | 8 September 2012 | Xbox 360 | Action | false |
| Assassin's Creed III (USA Multiplayer Patch Data prototype) | | PlayStation 3 | Action-Adventure | false |
| Assassin's Creed III: Liberation (Sep 9, 2012 Prototype) | 9 September 2012 | PlayStation Vita | Action-adventure, stealth | false |
| Assassin's Creed IV: Black Flag (Aug 22, 2013 Multiplayer prototype) | 22 August 2013 01:44:00 | Xbox 360 | Vehicular Combat, Platformer, Action-Adventure | false |
| Assassin's Creed IV: Black Flag (EU Multiplayer Patch Data prototype) | | PlayStation 3 | Action Adventure | false |
| Assassin's Creed IV: Black Flag (Feb 26, 2013 Multiplayer prototype) | 26 February 2013 | Xbox 360 | Vehicular Combat, Platformer, Action-Adventure | false |
| Assassin's Creed IV: Black Flag (Feb 28, 2013 Multiplayer prototype) | 28 February 2013 | Xbox 360 | Vehicular Combat, Platformer, Action-Adventure | false |
| Assassin's Creed IV: Black Flag (Jul 15, 2013 Multiplayer prototype) | 15 July 2013 | Xbox 360 | Vehicular Combat, Platformer, Action-Adventure | false |
| Assassin's Creed IV: Black Flag (Jul 20, 2013 Multiplayer prototype) | 20 July 2013 | Xbox 360 | Vehicular Combat, Platformer, Action-Adventure | false |
| Assassin's Creed IV: Black Flag (Jul 23, 2013 prototype) | 23 July 2013 17:31:28 | Xbox 360 | Action Adventure | false |
| Assassin's Creed IV: Black Flag (Jun 28, 2013 Multiplayer prototype) | 28 June 2013 | Xbox 360 | Vehicular Combat, Platformer, Action-Adventure | false |
| Assassin's Creed IV: Black Flag (List of Unplayable Builds) | | Xbox 360 | Vehicular Combat, Platformer, Action-Adventure | false |
| Assassin's Creed IV: Black Flag (May 14, 2013 Multiplayer prototype) | 14 May 2013 | Xbox 360 | Vehicular Combat, Platformer, Action-Adventure | false |
| Assassin's Creed IV: Black Flag (May 16, 2013 prototype) | 16 May 2013 11:41:03 | Xbox 360 | Action Adventure | false |
| Assassin's Creed IV: Black Flag (May 17, 2013 prototype) | 17 May 2013 09:31:02 | Xbox 360 | Action Adventure | false |
| Assassin's Creed IV: Black Flag (May 7, 2013 prototype) | 7 May 2013 04:26:39 | Xbox 360 | Action Adventure | false |
| Assassin's Creed IV: Black Flag (Oct 3, 2013 prototype) | 3 October 2013 00:00:00 | Xbox 360 | Action Adventure | false |
| Assassin's Creed IV: Black Flag (Sep 13, 2013 Multiplayer prototype) | 13 September 2013 | Xbox 360 | Vehicular Combat, Platformer, Action-Adventure | false |
| Assassin's Creed IV: Black Flag (Sep 13, 2013 Prototype) | 13 September 2013 | PlayStation 3 | Action Adventure | false |
| Assassin's Creed IV: Black Flag (USA Multiplayer Patch Data prototype) | | PlayStation 3 | Action Adventure | false |
| Assassin's Creed: Brotherhood (Apr 15, 2011 multiplayer prototype) | 15 April 2011 | Xbox 360 | Action Adventure, Stealth | false |
| Assassin's Creed: Brotherhood (Apr 16, 2011 multiplayer prototype) | 16 April 2011 | Xbox 360 | Action Adventure, Stealth | false |
| Assassin's Creed: Brotherhood (Apr 18, 2011 10 Multiplayer prototype) | 18 April 2011 | Xbox 360 | Action Adventure, Stealth | false |
| Assassin's Creed: Brotherhood (Apr 18, 2011 17 Multiplayer prototype) | 18 April 2011 | Xbox 360 | Action Adventure, Stealth | false |
| Assassin's Creed: Brotherhood (Aug 16, 2010 Multiplayer prototype) | 16 August 2010 05:26:32 | Xbox 360 | Action Adventure, Stealth | false |
| Assassin's Creed: Brotherhood (EU Multiplayer prototype) | | PlayStation 3 | Action Adventure, Stealth | false |
| Assassin's Creed: Brotherhood (EU Patch Data 01.02 prototype) | | PlayStation 3 | Action Adventure, Stealth | false |
| Assassin's Creed: Brotherhood (EU Patch Data 02.01 A prototype) | | PlayStation 3 | Action Adventure, Stealth | false |
| Assassin's Creed: Brotherhood (EU Patch Data 02.01 B prototype) | | PlayStation 3 | Action Adventure, Stealth | false |
| Assassin's Creed: Brotherhood (Oct 11, 2010 prototype) | 11 October 2010 00:00:00 | Xbox 360 | Action Adventure | false |
| Assassin's Creed: Brotherhood (Oct 9, 2010 prototype) | 9 October 2010 | Xbox 360 | Action Adventure | false |
| Assassin's Creed: Brotherhood (PAL Patch Data 02.01 prototype) | | PlayStation 3 | Action-Adventure | false |
| Assassin's Creed: Brotherhood (PAL QA Patch Data 1.01 prototype) | | PlayStation 3 | Action-Adventure | false |
| Assassin's Creed: Brotherhood (USA Multiplayer prototype) | | PlayStation 3 | Action Adventure, Stealth | false |
| Assassin's Creed: Brotherhood (USA Patch Data 01.02 prototype) | | PlayStation 3 | Action Adventure, Stealth | false |
| Assassin's Creed: Revelations (Europe Multiplayer prototype) | | PlayStation 3 | Action Adventure | false |
| Assassin's Creed: Revelations (Jun 20, 2011 Multiplayer prototype) | 20 June 2011 | Xbox 360 | Action Adventure | false |
| Assassin's Creed: Revelations (Mar 29, 2011 Multiplayer prototype) | 29 March 2011 | Xbox 360 | Action Adventure | false |
| Assassin's Creed: Revelations (Oct 5, 2011 prototype) | 5 October 2011 22:41:15 | Xbox 360 | Action Adventure | false |
| Assassin's Creed: Revelations (USA Multiplayer prototype) | | PlayStation 3 | Action Adventure | false |
| Assassin's Creed: Rogue (A prototype) | | PlayStation 3 | Action-Adventure | false |
| Assassin's Creed: Rogue (Apr 1, 2014 prototype) | 1 April 2014 | Xbox 360 | Action Adventure | false |
| Assassin's Creed: Rogue (Apr 11, 2014 prototype) | 11 April 2014 | Xbox 360 | Action Adventure | false |
| Assassin's Creed: Rogue (Apr 26, 2014 prototype) | 26 April 2014 | Xbox 360 | Action Adventure | false |
| Assassin's Creed: Rogue (Apr 5, 2014 prototype) | 5 April 2014 | Xbox 360 | Action Adventure | false |
| Assassin's Creed: Rogue (Aug 22, 2014 prototype) | 22 August 2014 | PlayStation 3 | Action-Adventure | false |
| Assassin's Creed: Rogue (Aug 25, 2014 prototype) | 25 August 2014 | PlayStation 3 | Action-Adventure | false |
| Assassin's Creed: Rogue (Aug 26, 2014 prototype) | 26 August 2014 | PlayStation 3 | Action-Adventure | false |
| Assassin's Creed: Rogue (Jul 11, 2014 prototype) | 10 July 2014 | Xbox 360 | Action-Adventure | false |
| Assassin's Creed: Rogue (Jul 18, 2014 prototype) | 18 July 2014 | Xbox 360 | Action-Adventure | false |
| Assassin's Creed: Rogue (Jul 19, 2014 prototype) | 19 July 2014 | Xbox 360 | Action-Adventure | false |
| Assassin's Creed: Rogue (Jul 22, 2014 prototype) | 22 July 2014 | Xbox 360 | Action-Adventure | false |
| Assassin's Creed: Rogue (Jul 31, 2014 prototype) | 31 July 2014 | PlayStation 3 | Action-Adventure | false |
| Assassin's Creed: Rogue (Jul 9, 2014 prototype) | 9 July 2014 | Xbox 360 | Action-Adventure | false |
| Assassin's Creed: Rogue (May 10, 2014 prototype) | 10 May 2014 | Xbox 360 | Action Adventure | false |
| Assassin's Creed: Rogue (May 19, 2014 prototype) | 19 May 2014 14:41:19 | Xbox 360 | Action Adventure | false |
| Assassin's Creed: Rogue (May 2, 2014 prototype) | 2 May 2014 | Xbox 360 | Action Adventure | false |
| Assassin's Creed: Rogue (Oct 14, 2014 DLC Activities Pack prototype) | 14 October 2014 | Xbox 360 | Action-Adventure | false |
| Assassin's Creed: Rogue (Oct 14, 2014 DLC Collectibles Pack prototype) | 14 October 2014 | Xbox 360 | Action-Adventure | false |
| Assassin's Creed: Rogue (Oct 14, 2014 DLC Resource Pack prototype) | 14 October 2014 | Xbox 360 | Action-Adventure | false |
| Assassin's Creed: Rogue (Oct 14, 2014 DLC Technology Pack prototype) | 14 October 2014 | Xbox 360 | Action-Adventure | false |
| Assassin's Creed: Rogue (Oct 14, 2014 DLC The Templar Legacy Pack prototype) | 14 October 2014 | Xbox 360 | Action-Adventure | false |
| Assassin's Creed: Rogue (Oct 6, 2014 prototype) | 6 October 2014 | PlayStation 3 | Action-Adventure | false |
| Assassin's Creed: Rogue (Sep 21, 2014 prototype) | 21 September 2014 | Xbox 360 | Action-Adventure | false |
| Assassin's Creed: Rogue (Sep 22, 2014 prototype) | 22 September 2014 | PlayStation 3 | Action-Adventure | false |
| Assassin's Creed: Rogue (Sep 23, 2014 13.28 prototype) | 23 September 2014 13:28:49 | PlayStation 3 | Action-Adventure | false |
| Assassin's Creed: Rogue (Sep 23, 2014 prototype) | 23 September 2014 | PlayStation 3 | Action-Adventure | false |
| Assassin's Creed: Rogue (Sep 24, 2014 09.28 prototype) | 24 September 2014 09:28:49 | PlayStation 3 | Action-Adventure | false |
| Assassin's Creed: Rogue (Sep 24, 2014 prototype) | 24 September 2014 | PlayStation 3 | Action-Adventure | false |
| Assassin's Creed: Rogue (Sep 3, 2014 A prototype) | 3 September 2014 | PlayStation 3 | Action-Adventure | false |
| Assassin's Creed: Rogue (Sep 3, 2014 B prototype) | 3 September 2014 | PlayStation 3 | Action-Adventure | false |
| Assassin's Creed: Rogue (Sep 4, 2014 prototype) | 4 September 2014 | PlayStation 3 | Action-Adventure | false |
| Assassin's Creed: Rogue (Sep 8, 2014 A prototype) | 8 September 2014 | PlayStation 3 | Action-Adventure | false |
| Assassin's Creed: Rogue (Sep 8, 2014 B prototype) | 8 September 2014 | PlayStation 3 | Action-Adventure | false |
| Assassin's Creed: Rogue (Sep 9, 2014 A prototype) | 9 September 2014 | PlayStation 3 | Action-Adventure | false |
| Assassin's Creed: Rogue (Sep 9, 2014 B prototype) | 9 September 2014 | PlayStation 3 | Action-Adventure | false |
| Assassin's Creed: Rogue Assets of Incomplete Builds | | PlayStation 3 | Action-Adventure | false |
| Assault Heroes (DLC TEST PACK 2 prototype) | | Xbox 360 | Shoot Em Up | true |
| Assault Heroes (Mar 30, 2007 prototype) | 30 March 2007 | Xbox 360 | Shoot Em Up | false |
| Assault Heroes 2 (Mar 4, 2008 prototype) | 4 March 2008 | Xbox 360 | Shoot Em Up | false |
| Assault Rigs (Jan 8, 1996 prototype) | 8 January 1996 14:57:58 | PlayStation | Vehicular Combat | false |
| Assault Rigs (Oct 10, 1995 prototype) | 10 October 1995 15:37:54 | PlayStation | Vehicular Combat | false |
| Assault: Retribution (Sep 3, 1998 prototype) | 3 September 1998 17:15:48 | PlayStation | Action | false |
| Packaging Sources | | PlayStation 2 | Racing | false |
| Jun 22, 2000 Asset Disc | | Dreamcast | | false |
| Press Kit | | PlayStation 2 | Music | false |
| Agetec PS2 Graphic Assets | | PlayStation 2 | | false |
| BioShock 3D Assets | | Brew | | false |
| Art Info | | PlayStation 2 | | false |
| Call of Duty 2 Dev Maps | | Xbox 360 | Action | false |
| Call Of Duty Black Ops Press Disc | | Other | FPS | false |
| Assets Disc | | PlayStation 2 | | false |
| Press CD | | PlayStation | | false |
| Hi-res Disc August 99 | | PlayStation | | false |
| Hi-res Disc July 99 | | PlayStation | | false |
| Press Disc July 99 | | PlayStation | | false |
| Press Disc November 99 | | PlayStation | | false |
| Asset Disc | | PlayStation 2 | | false |
| Daxter Press Disc | | PlayStation Portable | Action | false |
| Diablo III Beta Press Kit | | PC | Role-Playing, Action-Adventure | false |
| Diablo III Blizzcon 2010 Press Kit | | PC | Role-Playing, Action-Adventure | false |
| Diablo III Blizzcon 2011 Press Kit | | PC | Role-Playing, Action-Adventure | false |
| Diablo III E3 2013 Press Kit | | Other | Role-Playing, Action-Adventure | false |
| Diablo III Gamescom 2010 Press Kit | | PC | Role-Playing, Action-Adventure | false |
| Diablo III Launch Press Kit | | PC | Role-Playing, Action-Adventure | false |
| Diablo III PAX East 2013 Press Kit | | PlayStation 3 | Role-Playing, Action-Adventure | false |
| Dino 2 Playstation Source Code | | PlayStation | | true |
| Makai Senki Disgaea Digital Genga-shuu | | PlayStation 2 | Tactical role-playing game, Entertainment, Speculative fiction, Fantasy, Societal | false |
| Electronic Press Kit | | PlayStation 2 | | false |
| Message Files | | SNES | RPG | false |
| Midway E3 2005 Disc | | PlayStation 2 | | false |
| Fallout 3 Australia Press Event Assets | | Other | Role-Playing, First-Person Shooter | false |
| Frogger 2 Dev Archives | | PC | Action | false |
| GameNation E3 2002 Media Kit | | Other | | false |
| NintendoGamecubePreview | | Nintendo GameCube | | true |
| Gangs of London Press Disc | | PlayStation Portable | Action | false |
| Gears of War Microsoft's Internal Archive Leak | | Other | Third-person shooter | false |
| Half-Life 2 E3 2003 Footage CD | | PC | Shooter | false |
| Heavy Rain Asset Disc | | PlayStation 3 | Interactive drama, action-adventure | false |
| Hexplore 1997 ECTS Preview Assets Disk | | PC | Role-playing video game, action, adventure, puzzle | false |
| Manual Sources | | PC | | false |
| Jimmy Neutron vs. Jimmy Negatron GBA Assets | | Game Boy Advance | Action | false |
| Jimmy Neutron vs. Jimmy Negatron GBA Source Code | | Game Boy Advance | Action | false |
| PC Design Document | | PC | Action | false |
| Killzone: Liberation Press Disk | | PlayStation Portable | FPS | false |
| Konami Artwork - Various Titles | | PlayStation | | false |
| Konami E3 2003 Electronic Press Kit | | Other | | false |
| Konami E3 2004 Press Asset Disc | | Other | | false |
| Konami Tokyo Game Show 2004 Asset Disc | | Other | | false |
| LEGO Batman 3: Beyond Gotham Press Kit | | Other | Platformer, Action-Adventure | false |
| Print Preview Assets | | Xbox 360 | | false |
| Eidos Assets | | PlayStation 2 | Action Adventure | false |
| Left 4 Dead Assets for Media | | Other | Action, First-Person Shooter | false |
| Lego Racers: The Video Game FMV Assets | | Other | | true |
| Lego Racers: The Video Game Pitch Documents | | Nintendo DS | | true |
| LittleBigPlanet Media Assets | | PlayStation 3 | | false |
| Lollipop Chainsaw Press Disk | | Other | Action | false |
| Press Kit | | PlayStation 2 | | false |
| Electronic Press Kit | | PlayStation 2 | | false |
| Mario Kart: Double Dash!! Press Kit (French) | | Nintendo GameCube | | false |
| Artwork Disc | | Nintendo 64 | | false |
| Mountain Bike Adrenaline Press Kit | | Other | Sports | false |
| Press Kit | | PlayStation | Sports - Basketball | false |
| Asset CD | | PlayStation 2 | | false |
| PlayStation E3 2000 Press Disc 1 | | PlayStation | | false |
| Power Source (ECTS 98 Press CD 1) | | PlayStation | | false |
| Power Source (ECTS 98 Press CD 2) | | PlayStation | | false |
| Primal Press Disc | | PlayStation 2 | Action-adventure | false |
| Primal Video Demo Disc | | PlayStation 2 | Action-adventure | false |
| RTX Red Rock Art Asset June 2003 | | PlayStation 2 | Action Adventure | false |
| Launch Press Kit | | PlayStation 2 | | false |
| Summer 99 Digital Press Kit | | PlayStation | | false |
| May 2001 Press Kit | | Game Boy Advance | | false |
| SCEE E3 May 2001 Press Information | | Other | | false |
| Manual Sources | | PC | FPS | false |
| Press Kit | | PlayStation 2 | | false |
| PAL Press CD | | PlayStation | | false |
| StarCraft II: Wings of Liberty Launch Press Kit | | PC | Real-time strategy | false |
| Level Pack | | Game Boy Color | | true |
| Tekken: Dark Resurrection Press Disk | | PlayStation Portable | Fighting | false |
| Press Disk | | PlayStation 2 | Action-Adventure | false |
| Game Boy and NES source code | | NES | Platformer | false |
| PR Asset Discs | | PlayStation 2 | | false |
| Press Assets 2003 | | PlayStation 2 | | false |
| The Sims 2 Exclusive Woolworths Preview Disc | | Other | Simulator | false |
| The Sims 2 Press Kit | | PC | Simulator | false |
| August 28, 2007 Design Document | | Nintendo Wii | Action | false |
| July 2006 Design Document | | Nintendo Wii | Action | false |
| GBA Source Code | | Game Boy Advance | Racing | true |
| Art Disc | | PlayStation | | false |
| UFO: Aftershock Fansite Kit | | PC | Strategy, Role-Playing | false |
| Uncharted 2: Among Thieves Media Disk | | PlayStation 3 | Action-adventure, third-person shooter | false |
| Uncharted: Drake’s Fortune Press Disk | | PlayStation 3 | Shooter | false |
| Universal Interactive Studios Confidential Asset Disc | | PlayStation 2 | | false |
| Press Disc | | Other | | false |
| August 2000 Press Kit | | PlayStation | Rhythm | false |
| Disc CD | | PlayStation 2 | Fighting | false |
| Asset CD | | Xbox | | false |
| Asterix & Obelix XXL (Feb 25, 2004 prototype) | 25 February 2004 | Nintendo GameCube | Action | false |
| Asterix & Obelix XXL (Prototype A) | | Game Boy Advance | Action | false |
| Asterix & Obelix XXL (Prototype B) | | Game Boy Advance | Action | false |
| Asterix (Aug 1, 1983 prototype) | | Atari 2600 | | false |
| Asterix (Feb 16, 1994 prototype) | 16 February 1994 11:05:14 | Game Gear | Action Platformer | false |
| Asterix (Feb 22, 1994 prototype) | 22 February 1994 09:14:06 | Game Gear | Action Platformer | false |
| Asterix (Jan 25, 1994 prototype) | 25 January 1994 16:53:24 | Game Gear | Action Platformer | false |
| Asterix (Jul 27, 1983 prototype) | | Atari 2600 | | false |
| Asterix (Localization prototype) | | Game Boy | Platformer | false |
| Asterix (Mar 11, 1993 prototype) | 11 March 1993 | SNES | Action | false |
| Asterix (Mar 15, 1994 prototype) | 15 March 1994 11:54:48 | Game Gear | Action Platformer | false |
| Asterix (Mar 16, 1994 prototype) | 16 March 1994 16:58:18 | Game Gear | Action Platformer | false |
| Asterix (Mar 3, 1994 prototype) | 3 March 1994 10:02:44 | Game Gear | Action Platformer | false |
| Asterix (Prototype A) | | Game Boy | Action | false |
| Asterix (Prototype B) | | Game Boy | Action | false |
| Asteroids & Deluxe (Oct 3, 2007 prototype) | 3 October 2007 13:42:37 | Xbox 360 | Shoot em Up | false |
| Asteroids (Atari 7800 prototype) | | Atari 7800 | Shoot 'em up | false |
| Asteroids (Game Boy Prototype) | | Game Boy | Arcade | false |
| Asteroids 2000 (Jul 20, 1994 prototype) | 20 July 1994 | Atari Jaguar | Shooter | true |
| Astro Boy: The Video Game (Jul 27, 2009 prototype) | 27 July 2009 | Nintendo Wii | Action | false |
| Astro Chase (Oct 25, 1983 prototype) | | Atari 2600 | | true |
| Astro Warrior & Pit Pot (Prototype) | | Sega Master System | Sports | false |
| AstroPop (Feb 22, 2006 prototype) | 22 February 2006 | Xbox 360 | Puzzle | false |
| Astrocade (Aug 1, 1994 prototype) | 1 August 1994 | Sega Saturn | Puzzle | true |
| Astropop (Unknown prototype) | | Xbox 360 | Puzzle | false |
| Astérix & Obélix XXL 2: Mission: Las Vegum (Feb 25, 2005 prototype) | 25 February 2005 02:53:23 | PlayStation 2 | Action | false |
| Asura's Wrath (Dec 2, 2011 prototype) | 2 December 2011 06:31:57 | PlayStation 3 | Action | false |
| AtSimple DS Series Vol. 1: The Misshitsu kara no Dasshutsu (prototype) | | Nintendo DSi | Trivia/Board Game | false |
| Atari Classics Evolved (Oct 1, 2007 prototype) | 1 October 2007 | PlayStation Portable | Compilation | false |
| Atari Classics Evolved (Oct 31, 2007 prototype) | 31 October 2007 10:47:12 | PlayStation Portable | Compilation | false |
| Atari Karts (Prototype) | | Atari Jaguar | Racing | false |