| Burning Fists: Force Striker (Dec 7, 1993 prototype) | 7 December 1993 09:12:08 | Sega CD | Action | ✓ |
| Burning Rangers (Dec 1, 1997 prototype) | | Sega Saturn | Action | - |
| Burning Rangers (Jan 3, 1998 prototype) | | Sega Saturn | Action | - |
| Burnout (Jan 3, 2002 prototype) | 3 January 2002 | PlayStation 2 | Racing | - |
| Burnout (Mar 21, 2002 prototype) | 21 March 2002 | Xbox | Racing | - |
| Burnout (Mar 6, 2002 prototype) | 6 March 2002 | Nintendo GameCube | Racing | - |
| Burnout (Oct 1, 2001 demo) | 1 October 2001 04:35:12 | PlayStation 2 | Racing | - |
| Burnout (September 12, 2001 prototype) | 12 September 2001 17:16:54 | PlayStation 2 | Racing | - |
| Burnout 2: Point of Impact (Aug 31, 2002 22.44.32 prototype) | 31 August 2002 22:44:32 | PlayStation 2 | Racing | - |
| Burnout 2: Point of Impact (Aug 31, 2002 prototype) | 31 August 2002 | PlayStation 2 | | - |
| Burnout 2: Point of Impact (Aug 5, 2002 prototype) | 5 August 2002 18:20:32 | PlayStation 2 | Racing | - |
| Burnout 2: Point of Impact (Aug 6, 2002 demo) | 6 August 2002 13:00:34 | PlayStation 2 | | - |
| Burnout 2: Point of Impact (Jul 27, 2002 prototype) | 27 July 2002 18:53:57 | PlayStation 2 | Racing | - |
| Burnout 2: Point of Impact (Mar 28, 2003 prototype) | 28 March 2003 17:20:19 | Xbox | | - |
| Burnout 3: Takedown (Apr 28, 2004 demo) | 28 April 2004 05:19:46 | PlayStation 2 | | - |
| Burnout 3: Takedown (Jul 20, 2004 11.11 prototype) | 20 July 2004 11:11:00 | PlayStation 2 | Racing | - |
| Burnout 3: Takedown (Jul 20, 2004 11.14 prototype) | 20 July 2004 11:14:24 | PlayStation 2 | Racing | - |
| Burnout 3: Takedown (Jun 21, 2004 demo) | 21 June 2004 02:37:27 | PlayStation 2 | | - |
| Burnout 3: Takedown (Jun 22, 2004 prototype) | 22 June 2004 22:03:45 | Xbox | Racing, Action | - |
| Burnout 3: Takedown (Jun 8, 2004 prototype) | 8 June 2004 18:20:40 | PlayStation 2 | Racing | - |
| Burnout 3: Takedown (May 29, 2004 demo) | 29 May 2004 08:28:33 | PlayStation 2 | | - |
| Burnout CRASH! (Mar 1, 2011 prototype) | 1 March 2011 | PlayStation 3 | Action | - |
| Burnout Crash! (Mar 11, 2011 prototype) | 11 March 2011 | Xbox 360 | Arcade | - |
| Burnout Crash! (May 12, 2011 prototype) | 12 May 2011 | Xbox 360 | Arcade | - |
| Burnout Paradise (Feb 22, 2007 prototype) | 22 February 2007 13:20:06 | Xbox 360 | Racing | - |
| Burnout Paradise (Jan 30, 2008 prototype) | 30 January 2008 18:48:45 | Xbox 360 | Racing | - |
| Burnout Paradise (Nov 13, 2006 prototype) | 13 November 2006 16:14:46 | Xbox 360 | Racing | - |
| Burnout Paradise (Nov 2, 2007 prototype) | 2 November 2007 15:41:50 | Xbox 360 | Racing | - |
| Burnout Paradise (Nov 28, 2007 prototype) | 28 November 2007 | Xbox 360 | Racing | - |
| Burnout Paradise (Nov 30, 2007 prototype) | 30 November 2007 11:15:20 | PlayStation 3 | Racing | - |
| Burnout Paradise (Oct 31, 2007 PlayStation 3 prototype) | 31 October 2007 16:48:36 | PlayStation 3 | Racing | - |
| Burnout Paradise (Oct 31, 2007 Xbox 360 prototype) | 31 October 2007 16:48:19 | Xbox 360 | Racing | - |
| Burnout Revenge (Aug 4, 2005 prototype) | 4 August 2005 16:04:15 | PlayStation 2 | Racing | - |
| Burnout Revenge (Aug 9, 2005 prototype) | 9 August 2005 08:41:16 | PlayStation 2 | Racing | - |
| Burnout Revenge (Feb 7, 2006 prototype) | 7 February 2006 | Xbox 360 | Racing | - |
| Burnout Revenge (Jul 14, 2005 prototype) | 14 July 2005 00:48:04 | PlayStation 2 | Racing | - |
| Burnout Revenge (Jul 2, 2005 13.05 demo) | 2 July 2005 13:05:41 | Xbox | Racing | - |
| Burnout Revenge (Jul 2, 2005 6.24 demo) | 2 July 2005 06:24:41 | PlayStation 2 | Racing | - |
| Burnout Revenge (Jul 7, 2005 demo) | 7 July 2005 11:03:28 | PlayStation 2 | Racing | - |
| Burnout Revenge (Jun 10, 2005 demo) | 10 June 2005 02:23:55 | PlayStation 2 | Racing | - |
| Burnout Revenge (Jun 17, 2005 demo) | 17 June 2005 10:40:37 | Xbox | Racing | - |
| Burnout Revenge (Jun 9, 2005 demo) | 9 June 2005 11:14:15 | Xbox | Racing | - |
| Burnout Revenge (May 29, 2005 demo) | 29 May 2005 07:56:39 | Xbox | Racing | - |
| Bust A Groove 2 (May 25, 2000 prototype) | 25 May 2000 13:35:38 | PlayStation | Rhythm | - |
| Bust a Groove (Aug 27, 1998 prototype) | 27 August 1998 | PlayStation | Music, fighting | - |
| Bust a Groove (Jul 30, 1998 prototype) | 30 July 1998 21:06:02 | PlayStation | Rhythm - Dancing | - |
| Bust-A-Move '99 (Aug 28, 1998 prototype) | 28 August 1998 13:44:36 | Nintendo 64 | Puzzle | - |
| Bust-a-Move Pocket (Prototype) | | Neo Geo Pocket Color | Puzzle | - |
| Buster Bros. Collection (Jul 13, 1996 prototype) | 13 July 1996 17:01:06 | PlayStation | Compilation | - |
| Buster Bros. Collection (Sep 29, 1995 prototype) | 29 September 1995 03:57:44 | PlayStation | Compilation | - |
| Buster Brothers (Prototype) | | Game Boy | Platformer | - |
| Busy Scissors (Prototype) | | Nintendo DS | | - |
| Buzz Lightyear of Star Command (May 8, 2000 prototype) | 8 May 2000 14:39:14 | PlayStation | Action | - |
| Buzz! Junior: RoboJam (Jan 12, 2007 prototype) | 12 January 2007 17:33:14 | PlayStation 2 | Action-Strategy | - |
| Buzz! Junior: RoboJam (Mar 14, 2007 prototype) | 14 March 2007 15:02:32 | PlayStation 2 | Action-Strategy | - |
| Buzz! Master Quiz (Jul 25, 2008 prototype) | 25 July 2008 15:01:53 | PlayStation Portable | Quiz | - |
| C-12: Final Resistance (Dec 19, 2000 prototype) | 19 December 2000 15:35:28 | PlayStation | Action | - |
| C-12: Final Resistance (May 5, 2000 prototype) | 5 May 2000 | PlayStation | Action | - |
| C: The Contra Adventure (Apr 22, 1998 prototype) | 22 April 1998 20:56:26 | PlayStation | 3D Shooter, Run-N-Gun | - |
| C: The Contra Adventure (Jun 12, 1998 prototype) | 12 June 1998 17:55:10 | PlayStation | 3D Shooter, Run-N-Gun | - |
| CD-I Prototype Disc - Philips Interactive Media Systems Presents Some Technical Aspects of CD-I | 1 September 1988 | Philips CD-i | FMV | ✓ |
| CJ: Elephant Fugitive (Oct 22, 1993 prototype) | 22 October 1993 | Game Gear | Action | - |
| CJ: Elephant Fugitive (Prototype) | | Sega Master System | Action | ✓ |
| Cabbage Patch Kids: Adventures in the Park (Aug 21, 1984 prototype) | 21 August 1984 | Atari 2600 | Platformer | ✓ |
| Cabbage Patch Kids: Adventures in the Park (ColecoVision prototype A) | | ColecoVision | Platformer | - |
| Cabbage Patch Kids: Adventures in the Park (ColecoVision prototype B) | | ColecoVision | Platformer | - |
| Cabbage Patch Kids: Adventures in the Park (Jul 27, 1984 prototype) | 27 July 1984 | Atari 2600 | Platformer | ✓ |
| Cabbage Patch Kids: Adventures in the Park (Jun 14, 1984 prototype) | 14 June 1984 | Atari 2600 | Platformer | ✓ |
| Cabbage Patch Kids: Adventures in the Park (Jun 1984 prototype) | | Atari 2600 | Platformer | ✓ |
| Cabbage Patch Kids: Adventures in the Park (Jun 29, 1984 prototype) | 29 June 1984 | Atari 2600 | Platformer | ✓ |
| Cabbage Patch Kids: Adventures in the Park (Jun 30, 1984 build) | 30 June 1984 | ColecoVision | Platformer | - |
| Cabbage Patch Kids: Adventures in the Park (May 24, 1984 prototype) | 24 May 1984 | Atari 2600 | Platformer | ✓ |
| Cabbage Patch Kids: Adventures in the Park (Sep 13, 1984 prototype A) | 13 September 1984 | Atari 2600 | Platformer | ✓ |
| Cabbage Patch Kids: Adventures in the Park (Sep 13, 1984 prototype B) | 13 September 1984 | Atari 2600 | Platformer | ✓ |
| Cabbage Patch Kids: Adventures in the Park (Sep 4, 1984 prototype) | 4 September 1984 | Atari 2600 | Platformer | ✓ |
| Cabbage Patch Kids: Adventures in the Park (Sep 7, 1984 prototype) | 7 September 1984 | Atari 2600 | Platformer | ✓ |
| Cadillac (sample) | | NES | | - |
| Caesar's Palace (Prototype B) | | NES | Gambling | - |
| Caesars Palace (Jul 29, 1997 prototype) | 29 July 1997 23:11:44 | PlayStation | Gambling | - |
| Caesars World of Gambling (Feb 5, 1992 prototype) | 5 February 1992 10:59:34 | Philips CD-i | Gambling | - |
| Cake-ya San Monogatari: Oishii Sweets o Tsukurou (Prototype A) | | Nintendo 3DS | Cooking | - |
| Cake-ya San Monogatari: Oishii Sweets o Tsukurou (Prototype B) | | Nintendo 3DS | Cooking | - |
| Cake-ya San Monogatari: Oishii Sweets o Tsukurou (Prototype C) | | Nintendo 3DS | Cooking | - |
| California Games II (Cartridge Prototype) | | SNES | Sports | - |
| California Speed (Apr 26, 1999 prototype) | 26 April 1999 | Nintendo 64 | Racing | ✓ |
| Call of Duty (Aug 20, 2003 prototype) | 20 August 2003 | PC | First-Person Shooter | - |
| Call of Duty (Aug 30, 2003 prototype) | 30 August 2003 | PC | First-Person Shooter | - |
| Call of Duty (Oct 21, 2005 prototype) | 21 October 2005 | N-Gage | FPS | - |
| Call of Duty 2 (DLC Invasion Pack prototype) | | Xbox 360 | First-Person Shooter | - |
| Call of Duty 2 (DLC Skirmish Pack prototype) | | Xbox 360 | First-Person Shooter | - |
| Call of Duty 2 (Oct 5, 2005 prototype) | 5 October 2005 | Xbox 360 | Action | - |
| Call of Duty 2 (Oct 9, 2005 prototype) | 9 October 2005 | Xbox 360 | Action | - |
| Call of Duty 2 (Sep 21, 2005 prototype) | 21 September 2005 | Xbox 360 | Action | - |
| Call of Duty 2 (Sep 22, 2005 prototype) | 22 September 2005 | Xbox 360 | Action | - |
| Call of Duty 2 (Sep 26, 2005 prototype) | 26 September 2005 | Xbox 360 | Action | - |
| Call of Duty 2: Big Red One (Oct 19, 2005 prototype) | 19 October 2005 | PlayStation 2 | First-Person Shooter | - |
| Call of Duty 3 (DLC Bravo Map Pack prototype) | | Xbox 360 | First-Person Shooter | - |
| Call of Duty 4: Modern Warfare (Apr 11, 2007 prototype) | 11 April 2007 | Xbox 360 | Shooter | - |
| Call of Duty 4: Modern Warfare (DLC Winter Crash Bonus Map prototype) | | Xbox 360 | First-Person Shooter | ✓ |
| Call of Duty 4: Modern Warfare (July 25, 2007 Multiplayer Prototype) | 25 July 2007 12:34:56 | Xbox 360 | FPS | - |
| Call of Duty 4: Modern Warfare (Jun 11, 2007 prototype) | 11 June 2007 | Xbox 360 | Shooter | - |
| Call of Duty 4: Modern Warfare (Mar 23, 2007 prototype) | 23 March 2007 | Xbox 360 | Shooter | - |
| Call of Duty 4: Modern Warfare (May 4, 2007 prototype) | 4 May 2007 | Xbox 360 | Shooter | - |
| Call of Duty 4: Modern Warfare (Sep 7, 2007 prototype) | 7 September 2007 | Xbox 360 | Shooter | - |
| Call of Duty Ghosts (September 23, 2013 Beta) | 23 September 2013 | Xbox 360 | First-person shooter | - |
| Call of Duty: Black Ops (Sep 4, 2010 Multiplayer Prototype) | 4 September 2010 02:08:37 | Xbox 360 | FPS | - |
| Call of Duty: Black Ops (Sep 6, 2010 Multiplayer Prototype) | 6 September 2010 02:11:27 | Xbox 360 | FPS | - |
| Call of Duty: Black Ops - Cold War (Jun 4, 2020 prototype) | 4 June 2020 | PC | First-Person Shooter | - |
| Call of Duty: Black Ops 4 (Feb 23, 2017 prototype) | 23 February 2017 | PlayStation 4 | First-Person Shooter | - |
| Call of Duty: Black Ops 4 (Mar 2, 2017 prototype) | 2 March 2017 | PlayStation 4 | First-Person Shooter | - |
| Call of Duty: Black Ops 4 (Mar 3, 2017 prototype) | 3 March 2017 | PlayStation 4 | First-Person Shooter | - |
| Call of Duty: Black Ops 4 (Mar 7, 2017 prototype) | 7 May 2017 | PlayStation 4 | First-Person Shooter | - |
| Call of Duty: Black Ops 4 (Sep 12, 2018 prototype) | 12 September 2018 | PC | First-Person Shooter | - |
| Call of Duty: Black Ops Declassified (Oct 2, 2015 prototype) | 2 October 2015 | PlayStation Vita | First-Person Shooter | - |
| Call of Duty: Black Ops II (Aug 21, 2012 Multiplayer Prototype) | 21 August 2012 12:00:58 | Xbox 360 | FPS | - |
| Call of Duty: Black Ops II (Feb 1, 2012 prototype) | 1 February 2012 04:21:05 | Xbox 360 | First Person Shooter | - |
| Call of Duty: Black Ops II (Jan 31, 2012 Multiplayer Prototype) | 31 January 2012 20:04:52 | Xbox 360 | FPS | - |
| Call of Duty: Black Ops II (Jul 23, 2012 Prototype) | 23 July 2012 06:09:40 | Xbox 360 | FPS | - |
| Call of Duty: Black Ops II (July 20, 2012 Multiplayer Prototype) | 20 July 2012 23:39:14 | Xbox 360 | FPS | - |
| Call of Duty: Black Ops II (Nov 15, 2011 Singleplayer/Multiplayer Prototype) | 15 November 2011 01:09:58 | Xbox 360 | FPS | - |
| Call of Duty: Black Ops III (Apr 13, 2015 prototype) | 13 April 2015 | PlayStation 4 | First-Person Shooter | - |
| Call of Duty: Black Ops III (Aug 26, 2015 prototype) | 26 August 2015 | PC | First-Person Shooter | - |
| Call of Duty: Modern Warfare (Aug 2, 2019 prototype) | 2 August 2019 | PlayStation 4 | First-Person Shooter | - |
| Call of Duty: Modern Warfare (Sep 19, 2019 prototype) | 19 September 2019 | PC | First-Person Shooter | - |
| Call of Duty: Modern Warfare 2 (Jul 13, 2009 prototype) | 13 July 2009 | Xbox 360 | FPS | - |
| Call of Duty: Modern Warfare 2 (Jul 9, 2010 demo) | 9 July 2010 18:44:00 | Xbox 360 | First Person Shooter | - |
| Call of Duty: Modern Warfare 3 (Oct 11, 2011 Prototype) | 11 October 2011 | Xbox 360 | FPS | - |
| Call of Duty: Modern Warfare 3 (Oct 11, 2011 prototype) | 11 October 2011 00:00:00 | Xbox 360 | First Person Shooter | - |
| Call of Duty: Modern Warfare 3 (Sep 19, 2011 Prototype) | 19 September 2011 | Xbox 360 | FPS | - |
| Call of Duty: Modern Warfare 3 (Sep 19, 2011 prototype) | 19 September 2011 00:00:00 | Xbox 360 | First Person Shooter | - |
| Call of Duty: Modern Warfare Remastered (Jun 16, 2016 prototype) | 16 February 2016 | PlayStation 4 | First-Person Shooter | - |
| Call of Duty: World at War (Aug 2, 2009 Patch Data prototype) | 2 August 2009 | PlayStation 3 | Action, First-Person Shooter | - |
| Call of Duty: World at War (Mar 20, 2007 prototype) | 20 March 2007 | Xbox 360 | Shooter | - |
| Call of Duty: World at War (Mar 27, 2007 Singleplayer/Multiplayer Prototype) | 27 March 2007 11:42:01 | Xbox 360 | FPS | - |
| Call of Duty: World at War (May 11, 2007 prototype) | 11 May 2007 | Xbox 360 | Shooter | - |
| Call of Duty: World at War (May 19, 2009 prototype) | 19 May 2009 00:00:00 | Xbox 360 | First Person Shooter | - |
| Call of Duty: World at War (Sep 17, 2008 prototype) | 17 September 2008 | Xbox 360 | Shooter | - |
| Call of Duty: World at War (Sep 25, 2008 Multiplayer Prototype) | 25 September 2008 19:31:31 | Xbox 360 | FPS | - |
| Call of Juarez: Bound in Blood (Mar 7, 2009 prototype) | 7 March 2009 09:46:13 | Xbox 360 | FPS | - |
| Call of Juarez: Bound in Blood (May 16, 2009 prototype) | 16 May 2009 00:00:00 | Xbox 360 | First Person Shooter | - |
| Call of Juarez: Gunslinger (Apr 4, 2013 prototype) | 4 April 2013 | Xbox 360 | FPS | - |
| Call of Juarez: The Cartel (May 16, 2011 prototype) | 16 May 2011 00:00:00 | Xbox 360 | First Person Shooter | - |
| Cannon Fodder (Prototype) | | Game Boy Color | Action | - |
| Cannon Spike (May 15, 2000 prototype) | 15 May 2000 16:09:44 | Dreamcast | Shooter | - |
| Capcom Classics Collection Vol. 1 (Aug 16, 2005 16.13 prototype) | 16 August 2005 16:13:02 | PlayStation 2 | Compilation | - |
| Capcom Classics Collection Vol. 1 (Aug 16, 2005 23.12 prototype) | 16 August 2005 23:12:21 | Xbox | Arcade Compilation | - |
| Capcom Classics Collection Vol. 1 (May 12, 2005 prototype) | 12 May 2005 09:01:42 | Xbox | Arcade Compilation | - |
| Capcom Classics Collection Vol. 2 (Jul 5, 2006 prototype) | 5 July 2006 22:50:29 | PlayStation 2 | Compilation | - |
| Capcom Classics Collection Vol. 2 (Sep 8, 2006 prototype) | 8 September 2006 23:31:13 | Xbox | Arcade Compilation | - |
| Capcom Fighting Evolution (Jan 31, 2005 prototype) | 31 January 2005 00:31:10 | Xbox | Fighting | - |
| Capcom Fighting Evolution (Mar 23, 2005 prototype) | 23 March 2005 01:28:35 | Xbox | Fighting | - |
| Capcom Fighting Evolution (Oct 29, 2004 prototype) | 29 October 2004 16:06:49 | PlayStation 2 | Fighting | - |
| Capcom Fighting Evolution (Sep 29, 2004 prototype) | 29 September 2004 09:36:34 | PlayStation 2 | Fighting | - |
| Capcom Fighting Evolution (Sep 8, 2004 prototype) | 8 September 2004 11:35:36 | PlayStation 2 | Fighting | - |
| Capcom vs. SNK: Millennium Fight 2000 (Jul 17, 2000 prototype) | 17 July 2000 00:00:00 | Dreamcast | Fighting | - |
| Capcom vs. SNK: Millennium Fight 2000 (Sep 20, 2000 prototype) | 20 September 2000 00:00:00 | Dreamcast | Fighting | - |
| Capcom's Soccer Shootout (prototype) | | SNES | Sports - Soccer | - |
| Captain Harlock (Non Interactive Demo) | | Game Boy Advance | Role Playing | ✓ |
| Captain Novolin (Prototype) | | SNES | Educational | - |
| Captain Quazar (Sep 21, 1995 prototype) | 21 September 1995 | 3DO | Shooter | - |
| Captain Silver (Prototype) | | Sega Master System | Action | - |
| Carcassonne (Apr 19, 2007 prototype) | 19 April 2007 | Xbox 360 | Board Game | - |
| Carcassonne (Aug 22, 2007 prototype) | 22 August 2007 | Xbox 360 | Board Game | - |
| Carcassonne (Jun 4, 2007 prototype) | 4 June 2007 | Xbox 360 | Strategy, Trivia/Board Game | - |
| Cardinal Syn (Dec 14, 1997 prototype) | 15 December 1997 06:20:38 | PlayStation | Fighting | - |
| Cardinal Syn (Feb 27, 1998 prototype) | 27 February 1998 23:37:10 | PlayStation | Fighting | - |
| Care Bears (prototype) | | Atari 2600 | | ✓ |
| Carmageddon (Prototype) | | Gizmondo | Vehicular combat | ✓ |
| Carnage Heart (May 10, 1996 prototype) | 10 May 1996 10:28:48 | PlayStation | Strategy | - |
| Carnivalé (Game Boy Color prototype) | | Game Boy Color | Racing | ✓ |
| Carnivalé: Cenzo's Adventure (Jul 21, 2000 prototype) | 21 July 2000 | Nintendo 64 | Action | ✓ |
| Carol Vorderman's Sudoku (Jun 7, 2006 prototype) | 7 June 2006 16:08:20 | PlayStation 2 | Puzzle | - |
| Carrier (May 10, 1999 prototype) | 10 May 1999 | Dreamcast | Survival Horror | - |
| Cars: Mater-National Championship (Prototype) | | Nintendo Wii | Racing | - |
| Casper (Game Boy Prototype) | | Game Boy | Action adventure | - |
| Casper's Scare School: Spooky Sports Day (Aug 8, 2008 prototype) | 8 August 2008 06:21:48 | Nintendo DS | Action | - |
| Casper's Scare School: Spooky Sports Day (May 20, 2008 prototype) | 20 May 2008 12:07:36 | Nintendo DS | Action | - |
| Casper's Scare School: Spooky Sports Day (Sep 16, 2008 prototype) | 16 September 2008 06:21:48 | Nintendo DS | Action | - |
| Castle Crashers (Jul 23, 2008 prototype) | 23 July 2008 | Xbox 360 | Action role-playing, hack and slash | - |
| Castle of Illusion: Starring Mickey Mouse (May 25, 1990 prototype) | 25 May 1990 | Sega Master System | Action | - |
| Castle of Shikigami III (Feb 12, 2008 prototype) | 12 February 2008 | Nintendo Wii | Scrolling shooter | - |
| Castlevania Bloodlines (Aug 4, 1993 prototype) | 4 August 1993 | Sega Mega Drive | Platform | - |
| Castlevania Bloodlines (Oct 3, 1993 Prototype) | 3 October 1993 | Sega Mega Drive | | - |
| Castlevania Judgment (Prototype) | | Nintendo Wii | Action | - |
| Castlevania: Harmony of Despair (Demo) | | PlayStation 3 | Platformer, Action-Adventure | - |
| Castlevania: Harmony of Despair (Jul 9, 2010 prototype) | 9 July 2010 | Xbox 360 | Action Adventure | - |
| Castlevania: Lament of Innocence (Aug 14, 2003 prototype) | 14 August 2003 23:24:08 | PlayStation 2 | Action Adventure | - |
| Castlevania: Lords of Shadow (Jul 24, 2010 prototype) | 24 July 2010 | Xbox 360 | Action-adventure, Platformer | - |
| Castlevania: Lords of Shadow (Sep 13, 2010 prototype) | 13 September 2010 14:53:33 | Xbox 360 | Action | - |
| Castlevania: Resurrection (Nov 5, 1999 prototype) | 5 November 1999 | Dreamcast | Action-adventure, platforming | ✓ |
| Castlevania: Symphony of the Night (Feb 19, 2007 prototype) | 19 February 2007 | Xbox 360 | Action Adventure | - |
| Castlevania: Symphony of the Night (Game.com Prototype) | 1999 | Game.com | Action | ✓ |
| Castlevania: Symphony of the Night (Jun 17, 1997 prototype) | 18 June 1997 08:33:38 | PlayStation | Action/RPG | - |
| Castlevania: Symphony of the Night (Mar 6, 2007 prototype) | 6 March 2007 | Xbox 360 | Action | - |
| Castlevania: The Dracula X Chronicles (Jan 30, 2007 prototype) | 30 January 2007 | PlayStation Portable | Platform-adventure | - |
| Cat Trax (prototype) | | Atari 2600 | | ✓ |
| Catan (Mar 28, 2007 prototype) | 28 March 2007 | Xbox 360 | Card game | - |
| Catan (May 3, 2005 prototype) | 3 May 2005 12:16:12 | N-Gage | Turn-based strategy | - |
| Catapult (Prototype) | | Gizmondo | Action | ✓ |
| Cate West: The Vanishing Files (Prototype) | | Nintendo Wii | Mystery | - |
| Caterpillar (Jul 13, 2010 prototype) | 13 July 2010 | PlayStation Portable | | - |
| Caterpillar (Jul 16, 2010 prototype) | 16 July 2010 | PlayStation Portable | | - |
| Catrap (prototype) | | Game Boy | Puzzle | - |
| Catwoman (Jun 15, 2004 prototype) | 15 June 2004 16:36:23 | Xbox | Action-adventure | - |
| Cave Dude (Prototype) | | Game Gear | Action | ✓ |
| Caves of Fear CD (Prototype) | | Atari Jaguar CD | FMV | ✓ |
| Center Ring Boxing (Sep 26, 1995 prototype) | 26 September 1995 12:09:50 | Sega Saturn | Fighting | - |
| Centipede & Millipede (Mar 29, 2007 prototype) | 29 March 2007 | Xbox 360 | Compilation | - |
| Centipede (prototype) | | Atari 2600 | Fixed Shooter | - |
| Centurion - Defender of Rome (Apr 24, 1991 build) | 24 April 1991 16:13:40 | Sega Mega Drive | Strategy | - |
| Chakan - The Forever Man (Oct 6, 1992 build) | 6 October 1992 10:20:42 | Sega Mega Drive | Platformer | - |
| Champions World Class Soccer (Mar 18, 1994 prototype) | 18 March 1994 | Sega Mega Drive | Sports - Soccer | - |
| Champions of Norrath (Aug 20, 2003 prototype) | 20 August 2003 17:53:38 | PlayStation 2 | Action RPG | - |
| Champions of Norrath (Dec 11, 2003 prototype) | 11 December 2003 01:20:00 | PlayStation 2 | Action RPG | - |
| Champions: Return to Arms (Jul 24, 2004 prototype) | 24 July 2004 07:13:00 | PlayStation 2 | Action role-playing, hack and slash | - |
| Champions: Return to Arms (Sep 9, 2004 prototype) | 9 September 2004 19:32:00 | PlayStation 2 | Action role-playing, hack and slash | - |
| Championship Manager 2008 (Oct 15, 2007 prototype) | 15 October 2007 05:54:51 | PC | Simulation, Soccer | - |
| Championship Manager 2010 (Prototype) | | PlayStation Portable | Sports | - |
| Championship Motocross 2001 featuring Ricky Carmichael (Dec 8, 2000 prototype) | 8 December 2000 | PlayStation | Racing | - |
| Championship Surfer (Aug 15, 2000 prototype) | 15 August 2000 22:02:34 | Dreamcast | Sports - Surfing | - |
| Chaos Control (May 29, 1996 prototype) | 29 May 1996 | Sega Saturn | Rail shooter | - |
| Chaos Control (Oct 14, 1994 prototype) | 14 October 1994 | Philips CD-i | Rail shooter | - |
| Chaos Control (Oct 3, 1994 prototype) | 3 October 1994 | Philips CD-i | Rail shooter | - |
| Charge 'N Blast (Jul 11, 2000 prototype) | 11 July 2000 00:00:00 | Dreamcast | Action | - |
| Charge 'N Blast (Sep 29, 2000 prototype) | 29 September 2000 00:00:00 | Dreamcast | Action | - |
| Chase the Express (Apr 27, 2000 prototype) | 27 April 2000 15:21:32 | PlayStation | Action Adventure | - |
| Chavez (prototype) | | SNES | Sports | - |
| Checkered Flag (CES 1993 prototype) | August 1993 | Atari Jaguar | Racing | - |
| Chelnov (Jul 23, 1997 prototype) | 23 July 1997 13:41:20 | Sega Saturn | Action | ✓ |
| Chessmaster 7000 (Sep 17, 1999 prototype) | 17 September 1999 | PC | | - |
| Chessmaster Live (Dec 21, 2007 prototype) | 21 December 2007 | Xbox 360 | Trivia/Board Game | - |
| Chester Cheetah: Wild Wild Quest (Lynchmob prototype) | | SNES | | - |
| Chester Field: Ankoku Shin heno Chousen (Prototype) | | NES | Action | - |
| Chibi Maruko-chan: Mezase! Minami no Island!! (Prototype) | | SNES | Action | - |
| Chicago Enforcer (Nov 8, 2004 prototype) | 8 November 2004 | Xbox | | - |
| Chicago Enforcer (Sep 11, 2004 prototype) | 11 September 2004 01:03:07 | Xbox | First-Person Shooter | - |
| Chicago Syndicate (Jul 10, 1995 prototype) | 10 July 1995 16:29:00 | Game Gear | Beatem Up | - |
| Chicago Syndicate (Jul 11, 1995 prototype) | 11 July 1995 17:24:06 | Game Gear | Beatem Up | - |
| Chicago Syndicate (Jul 19, 1995 prototype) | 19 July 1995 16:41:32 | Game Gear | Beatem Up | - |
| Chicago Syndicate (Jul 20, 1995 prototype) | 20 July 1995 15:45:16 | Game Gear | Beatem Up | - |
| Chicago Syndicate (Jul 21, 1995 prototype B) | 21 July 1995 17:43:06 | Game Gear | Beatem Up | - |
| Chicago Syndicate (Jul 21, 1995 prototype) | 21 July 1995 11:57:16 | Game Gear | Beatem Up | - |
| Chicago Syndicate (Jul 27, 1995 prototype) | 27 July 1995 10:20:48 | Game Gear | Beatem Up | - |
| Chicago Syndicate (Jul 3, 1995 prototype) | 3 July 1995 21:26:08 | Game Gear | Beatem Up | - |
| Chicago Syndicate (Jul 5, 1995 prototype) | 5 July 1995 22:12:20 | Game Gear | Beatem Up | - |
| Chicago Syndicate (Jul 6, 1995 prototype) | 6 July 1995 22:12:46 | Game Gear | Beatem Up | - |
| Chicago Syndicate (Jun 1, 1995 prototype) | 1 June 1995 19:02:08 | Game Gear | Beatem Up | - |
| Chicago Syndicate (Jun 12, 1995 prototype) | 12 June 1995 18:08:16 | Game Gear | Beatem Up | - |
| Chicago Syndicate (Jun 14, 1995 prototype) | 14 June 1995 19:14:42 | Game Gear | Beatem Up | - |
| Chicago Syndicate (Jun 19, 1995 prototype) | 19 June 1995 21:28:26 | Game Gear | Beatem Up | - |
| Chicago Syndicate (Jun 20, 1995 prototype) | 20 June 1995 19:59:32 | Game Gear | Beatem Up | - |
| Chicago Syndicate (Jun 22, 1995 prototype) | 22 June 1995 17:45:20 | Game Gear | Beatem Up | - |
| Chicago Syndicate (Jun 26, 1995 prototype) | 26 June 1995 18:45:58 | Game Gear | Beatem Up | - |
| Chicago Syndicate (Jun 28, 1995 prototype) | 27 June 1995 23:26:34 | Game Gear | Beatem Up | - |
| Chicago Syndicate (Jun 29, 1995 prototype B) | 29 June 1995 22:41:06 | Game Gear | Beatem Up | - |
| Chicago Syndicate (Jun 29, 1995 prototype) | 29 June 1995 00:31:34 | Game Gear | Beatem Up | - |
| Chicago Syndicate (Jun 30, 1995 prototype B) | 30 June 1995 16:10:36 | Game Gear | Beatem Up | - |
| Chicago Syndicate (Jun 5, 1995 prototype) | 5 June 1995 21:41:40 | Game Gear | Beatem Up | - |
| Chicago Syndicate (Jun 7, 1995 prototype) | 7 June 1995 09:13:40 | Game Gear | Beatem Up | - |
| Chicago Syndicate (Jun 8, 1995 prototype) | 8 June 1995 17:45:00 | Game Gear | Beatem Up | - |
| Chicago Syndicate (Mar 20, 1995 prototype) | 20 March 1995 | Game Gear | Action | - |
| Chicago Syndicate (May 5, 1995 prototype) | 5 May 1995 17:53:08 | Game Gear | Beatem Up | - |
| Chicane: Jenson Button Street Racing (Prototype) | | Gizmondo | Racing | - |
| Chicken Run (Jul 7, 2000 prototype) | 7 July 2000 | PlayStation | Action Adventure | - |
| Chicken Run (Oct 16, 2000 prototype) | 16 October 2000 16:08:30 | Dreamcast | Action Adventure | - |
| Chicken Run (Sep 30, 2000 prototype) | 30 September 2000 18:08:52 | PlayStation | Action Adventure | - |
| Chili Con Carnage (Sep 23, 2006 prototype) | 23 September 2006 20:19:43 | PlayStation Portable | Action | - |
| Chill (Jan 19, 1998 prototype) | 19 January 1998 15:27:47 | Sega Saturn | Sports | ✓ |
| Chill (Sep 30, 1997 prototype) | 30 September 1997 17:11:54 | PlayStation | Sports - Snowboarding | - |
| Chime (May 28, 2009 prototype) | 28 May 2009 | Xbox 360 | Rhythm | - |
| Chip 'N Dale: Rescue Rangers (Prototype) | | NES | Action | - |
| Chip's Challenge (v0.924B prototype) | | NES | Puzzle | ✓ |
| Choplifter HD (Aug 5, 2011 prototype) | 5 August 2011 20:38:50 | Xbox 360 | Shoot Em Up | - |
| Choplifter HD (Dec 7, 2011 prototype) | 7 December 2011 | Xbox 360 | Shoot Em Up | - |
| Choplifter III (Prototype A) | | SNES | Shoot 'Em Up | - |
| Choplifter III (Prototype B) | | SNES | Shoot 'Em Up | - |
| Choplifter! (Jul 1, 1986 prototype) | 1 July 1986 | Sega Master System | Action | - |
| Choplifter! (SG-1000 Prototype) | | SG-1000 | Action | - |
| Choplifter! (Sega Master System Prototype) | | Sega Master System | Action | - |
| Choro Q (Aug 14, 2004 prototype) | 14 August 2004 18:17:49 | PlayStation 2 | Racing, Role-playing | - |
| Chou Majin Eiyuuden Wataru: Mazekko Monster (Prototype) | | Game Boy | Role Playing | - |
| Chouon Senshi Borgman (Prototype) | | Sega Master System | Action | - |
| Chrime (Jul 22, 2009 prototype) | 22 July 2009 | Xbox 360 | Rhythm | - |
| Chromehounds (May 17, 2006 prototype) | 17 May 2006 22:22:02 | Xbox 360 | Action | - |
| Chromehounds (May 31, 2006 prototype) | 31 May 2006 | Xbox 360 | Action, Strategy, Simulation | - |
| Chrono Cross (Apr 11, 2000 prototype) | 11 April 2000 17:45:00 | PlayStation | Role Playing | - |
| Chrono Cross (Mar 8, 2000 prototype) | 8 March 2000 14:05:00 | PlayStation | Role Playing | - |
| Chrono Trigger (Nov 17, 1994 prototype) | 17 November 1994 | SNES | RPG | - |
| ChuChu Rocket! (Apr 28, 2000 build) | 28 April 2000 | Dreamcast | Puzzle | - |
| ChuChu Rocket! (Jan 27, 2000 prototype) | 27 January 2000 | Dreamcast | Puzzle | - |
| Chuck E. Cheese's Party Games (May 10, 2010 prototype) | 10 May 2010 | Nintendo Wii | Simulator, minigames | - |
| Chuck Rock (Prototype) | | Game Gear | Action | - |
| Chuck Rock (prototype) | | SNES | Platformer | - |
| Chuck Yeager's Fighter Combat (Prototype) | | NES | Shooting | ✓ |
| Chucky: Wanna Play? (May 6, 2011 prototype) | 6 May 2011 17:46:22 | Xbox 360 | Action | ✓ |
| Cipher Complex (Feb 23, 2009 prototype) | 23 February 2009 18:04:37 | Xbox 360 | Stealth | ✓ |
| Cipher Complex (Nov 18, 2009 prototype) | 18 November 2009 | Xbox 360 | Stealth | ✓ |
| Circuit Breakers (Jan 23, 1998 prototype) | 23 January 1998 | PlayStation | | - |
| Circuit Breakers (Mar 31, 1998 prototype) | 31 March 1998 00:36:38 | PlayStation | Racing | - |
| Circus Maximus: Chariot Wars (Nov 16, 2001 prototype) | 16 November 2001 19:10:06 | Xbox | Racing | - |
| Citizen X (Jan 8, 1993 prototype) | 8 January 1993 11:02:37 | Sega CD | FMV | ✓ |
| City Builder (Nov 24, 2009 prototype) | 24 November 2009 | Nintendo Wii | Simulator | - |
| ClaDun x2 (Oct 2, 2010 prototype) | 2 October 2010 10:50:39 | PlayStation Portable | Action role-playing game | - |
| Clash at Demonhead (Japanese prototype) | | NES | Platformer | - |
| Clash of the Titans (Dec 6, 2009 prototype) | 6 December 2009 | Xbox 360 | Action-adventure | - |
| Clay Fighter: Extreme (Apr 4, 1997 prototype) | 4 April 1997 17:12:50 | PlayStation | Fighting | ✓ |
| ClayFighter (Prototype) | | SNES | Fighting | - |
| ClayFighter 2: Judgment Clay (Apr 28, 1995 prototype) | 28 April 1995 | Sega 32X | Fighting | ✓ |
| ClayFighter 63 1/3 (Aug 21, 1997 prototype) | 21 August 1997 07:16:21 | Nintendo 64 | Fighting | - |
| Claymates (Prototype A) | | SNES | Platformer | - |
| Clive Barker's Jericho (Aug 31, 2007 prototype) | 31 August 2007 | Xbox 360 | | - |
| Clive Barker's Jericho (Jun 18, 2007 prototype) | 18 June 2007 | Xbox 360 | First-person shooter
survival horror | - |
| Clock Tower (Jul 18, 1997 prototype) | 18 July 1997 10:36:48 | PlayStation | Survival Horror | - |
| Clock Tower (Jul 5, 1997 prototype) | 5 July 1997 02:18:24 | PlayStation | Survival horror | - |
| Clock Tower (Prototype) | | SNES | Survival Horror | - |
| Clock Tower 2: The Door of the Fear (Sep 30, 1996 prototype) | 30 September 1996 13:52:50 | PlayStation | Survival Horror | - |
| Clockwork Knight (Feb 6, 1995 prototype) | 6 February 1995 11:01:43 | Sega Saturn | Platformer | - |
| Clockwork Knight - Pepperouchau's Adventure Sample (Nov 15, 1994 build) | 14 November 1994 | Sega Saturn | Platformer | - |
| Clockwork Knight 2 (Aug 30, 1995 prototype) | 30 August 1995 14:53:35 | Sega Saturn | Action | - |
| Clockwork Knight: Pengin War (Oct 21, 1995 prototype) | 21 October 1995 04:00:09 | Sega Saturn | Action | ✓ |
| Cloning Clyde (Jul 1, 2006 prototype) | 1 July 2006 | Xbox 360 | Adventure, Puzzle, Platformer | - |
| Close Combat: First to Fight (Mar 13, 2005 prototype) | 13 March 2005 | Xbox | FPS | - |
| Cloudberry Kingdom (Feb 9, 2011 prototype) | 9 February 2011 | Xbox 360 | Platformer | - |
| Club Drive (Prototype) | | Atari Jaguar | Racing | - |
| Cluedo (Sep 16, 1994 prototype) | 16 September 1994 | Philips CD-i | Mystery | - |
| Coaster Works (Nov 27, 2000 prototype) | 27 November 2000 00:00:00 | Dreamcast | Simulator | - |
| Cobra Command (Oct 10, 1992 prototype) | 10 October 1992 02:51:06 | Sega CD | Shooting | - |
| Cocoto Kart Racer (Jul 6, 2004 prototype) | 6 July 2004 | Xbox | Racing | ✓ |
| Cocoto Kart Racer (Prototype) | | Nintendo DS | Racing | - |
| Code Lyoko: Quest for Infinity (Sep 21, 2007 prototype) | 21 September 2007 | Nintendo Wii | Action-adventure | - |
| Coffeetime Crosswords (Dec 13, 2007 prototype) | 13 December 2007 06:21:05 | Xbox 360 | Puzzle | - |
| Cold Winter (Feb 9, 2005 prototype) | 9 February 2005 04:24:55 | PlayStation 2 | First-person shooter | - |
| Colin McRae Rally (Sep 15, 1999 prototype) | 15 September 1999 16:01:14 | PlayStation | Racing | - |
| Colin McRae Rally 04 (Jul 16, 2003 prototype) | 16 July 2003 | PlayStation 2 | Racing | - |
| Colin McRae Rally 2.0 (May 2, 2000 prototype) | 2 May 2000 | PlayStation | Racing | - |
| Colin McRae Rally 2005 (Jul 29, 2004 prototype) | 29 July 2004 | PlayStation 2 | Racing | - |
| Colin McRae Rally 2005 (Jun 30, 2004 prototype) | 30 June 2004 12:35:43 | Xbox | Racing | - |
| Colin McRae Rally 3 (Aug 13, 2002 prototype) | 13 August 2002 16:13:05 | Xbox | Racing | - |
| Colin McRae Rally 3 (Aug 19, 2002 prototype) | 19 August 2002 10:56:31 | Xbox | Racing | - |
| Colin McRae Rally 3 (Sep 29, 2002 prototype) | 29 September 2002 11:36:58 | Xbox | Racing | - |
| College Football USA 96 (Jun 21, 1995 prototype) | | Sega Mega Drive | Sports - Football | - |
| College Football's National Championship (Apr 13, 1994 prototype) | 13 April 1994 21:36:44 | Sega Mega Drive | Sports - Football | - |
| College Football's National Championship (Apr 18, 1994 prototype) | 19 April 1994 11:09:46 | Sega Mega Drive | Sports - Football | - |
| College Football's National Championship (Apr 19, 1994 prototype) | 19 April 1994 11:08:08 | Sega Mega Drive | Sports - Football | - |
| College Football's National Championship (Apr 29, 1994 prototype) | 29 April 1994 16:25:22 | Sega Mega Drive | Sports - Football | - |
| College Football's National Championship (Jun 1, 1994 prototype) | 1 June 1994 09:38:52 | Sega Mega Drive | Sports - Football | - |
| College Football's National Championship (Jun 14, 1994 prototype) | 14 June 1994 11:46:30 | Sega Mega Drive | Sports - Football | - |
| College Football's National Championship (Jun 15, 1994 prototype) | 15 June 1994 19:40:02 | Sega Mega Drive | Sports - Football | - |
| College Football's National Championship (Jun 18, 1994 prototype) | 21 June 1994 09:02:12 | Sega Mega Drive | Sports - Football | - |
| College Football's National Championship (Jun 20, 1994 prototype) | 20 June 1994 07:25:38 | Sega Mega Drive | Sports - Football | - |
| College Football's National Championship (Jun 3, 1994 prototype) | 3 June 1994 15:17:06 | Sega Mega Drive | Sports - Football | - |
| College Football's National Championship (Jun 7, 1994 prototype) | 7 June 1994 09:49:08 | Sega Mega Drive | Sports - Football | - |
| College Football's National Championship (Jun 8, 1994 prototype) | 8 June 1994 09:29:54 | Sega Mega Drive | Sports - Football | - |
| College Football's National Championship (May 11, 1994 prototype A) | 11 May 1994 14:28:22 | Sega Mega Drive | Sports - Football | - |
| College Football's National Championship (May 17, 1994 prototype A) | 17 May 1994 09:11:48 | Sega Mega Drive | Sports - Football | - |
| College Football's National Championship (May 20, 1994 prototype) | 20 May 1994 17:21:32 | Sega Mega Drive | Sports - Football | - |
| College Football's National Championship (May 25, 1994 prototype) | 25 May 1994 14:15:58 | Sega Mega Drive | Sports - Football | - |
| College Football's National Championship (May 3, 1994 prototype) | 3 May 1994 15:19:14 | Sega Mega Drive | Sports - Football | - |
| College Football's National Championship (May 31, 1994 prototype) | 31 May 1994 18:54:48 | Sega Mega Drive | Sports - Football | - |
| College Football's National Championship (May 6, 1994 prototype) | 6 May 1994 15:43:48 | Sega Mega Drive | Sports - Football | - |
| Colliderz (Jun 13, 1997 prototype) | 13 June 1997 16:30:12 | Sega Saturn | Action | ✓ |
| Colony Wars: Red Sun (Jan 11, 2000 prototype) | 11 January 2000 18:41:36 | PlayStation | Action | - |
| Colony Wars: Red Sun (Nov 16, 1999 prototype) | 16 November 1999 10:36:04 | PlayStation | Action | - |
| Color Cross (Prototype A) | | Nintendo DS | Puzzle | - |
| Color Cross (Prototype B) | | Nintendo DS | Puzzle | - |
| Color Cross (Prototype C) | | Nintendo DS | Puzzle | - |
| Color Cross (Prototype D) | | Nintendo DS | Puzzle | - |
| Color Cross (Prototype E) | | Nintendo DS | Puzzle | - |
| Colors (2600 prototype) | | Atari 2600 | | ✓ |
| Colors (Prototype) | | Gizmondo | Third-person shooter | ✓ |
| Colors of Modern Rock (Feb 22, 1993 prototype) | 22 February 1993 12:16:20 | Sega CD | Video | - |
| Colosseum: Road to Freedom (Mar 17, 2005 prototype) | 17 March 2005 12:50:32 | PlayStation 2 | | - |
| Columbus: Ougon no Yoake (Prototype) | | NES | Role Playing | - |
| Columns (Jun 21, 1990 build) | 21 June 1990 10:20:50 | Sega Mega Drive | Puzzle | - |
| Columns (Prototype) | | Sega Master System | Puzzle | - |
| Combat Elite: WWII Paratroopers (Apr 27, 2004 prototype) | 27 April 2004 14:13:14 | PlayStation 2 | Third-person shooter | - |
| Combat Elite: WWII Paratroopers (May 13, 2004 prototype) | 11 May 2004 | PlayStation 2 | Action role-playing game | - |
| Combat II (Jun 1, 1983 prototype) | 1 June 1983 | Atari 2600 | Flight Simulator | ✓ |
| Combat II (Prototype) | | Atari 2600 | Flight Simulator | ✓ |
| Combat Wings: The Great Battles of WWII (May 14, 2012 prototype) | 14 May 2012 | Xbox 360 | Flight Combat | - |
| Comic Jumper: The Adventures of Captain Smiley (Jun 10, 2010 prototype) | 10 June 2010 | Xbox 360 | Action | - |
| Comix Zone (Apr 4, 1995 prototype) | 4 April 1995 | Sega Mega Drive | Beatem Up | - |
| Comix Zone (Jul 12, 1995 prototype FULSCR) | 12 July 1995 11:33:30 | Sega Mega Drive | Beatem Up | - |
| Comix Zone (Jul 12, 1995 prototype) | 12 July 1995 11:33:30 | Sega Mega Drive | Beatem Up | - |
| Comix Zone (Jun 1, 1995 prototype B) | 31 May 1995 23:27:12 | Sega Mega Drive | Beatem Up | - |
| Comix Zone (Jun 1, 1995 prototype C) | 1 June 1995 15:53:58 | Sega Mega Drive | Beatem Up | - |
| Comix Zone (Jun 1, 1995 prototype D) | 1 June 1995 19:53:42 | Sega Mega Drive | Beatem Up | - |
| Comix Zone (Jun 12, 1995 prototype) | 12 June 1995 12:38:40 | Sega Mega Drive | Beatem Up | - |
| Comix Zone (Jun 2, 1995 prototype B) | 2 June 1995 12:51:04 | Sega Mega Drive | Beatem Up | - |
| Comix Zone (Jun 2, 1995 prototype) | 2 June 1995 02:56:36 | Sega Mega Drive | Beatem Up | - |
| Comix Zone (Jun 28, 1995 prototype) | 28 June 1995 15:27:48 | Sega Mega Drive | Beatem Up | - |
| Comix Zone (Jun 3, 1995 prototype) | 3 June 1995 16:06:36 | Sega Mega Drive | Beatem Up | - |
| Comix Zone (Jun 5, 1995 prototype) | 5 June 1995 11:00:14 | Sega Mega Drive | Beatem Up | - |
| Comix Zone (Jun 6, 1995 prototype) | 6 June 1995 11:00:14 | Sega Mega Drive | Beatem Up | - |
| Comix Zone (Jun 9, 1995 prototype) | 9 June 1995 09:10:44 | Sega Mega Drive | Beatem Up | - |
| Comix Zone (Mar 27, 2009 prototype) | 27 March 2009 | Xbox 360 | Action-Brawler | - |
| Comix Zone (May 26, 1995 prototype) | 26 May 1995 14:31:46 | Sega Mega Drive | Beatem Up | - |
| Comix Zone (May 30, 1995 prototype) | 30 May 1995 12:41:54 | Sega Mega Drive | Beatem Up | - |
| Comix Zone (May 31, 1995 prototype) | 31 May 1995 15:49:04 | Sega Mega Drive | Beatem Up | - |
| Command & Conquer Red Alert 3: Commander's Challenge (Jul 30, 2009 prototype) | 30 July 2009 | Xbox 360 | Real-Time Strategy | - |
| Command & Conquer: Red Alert (Oct 11, 1996 prototype) | 11 October 1996 | PC | RTS | - |
| Command & Conquer: Red Alert 3 (Oct 12, 2008 prototype) | 12 October 2008 03:56:32 | Xbox 360 | Action | - |
| Command & Conquer: Red Alert 3 (Oct 8, 2008 prototype) | 8 October 2008 | Xbox 360 | RTS | - |
| Command and Conquer: Commando (Jul 14, 1997 prototype) | 14 July 1997 12:06:20 | PlayStation | Adventure | ✓ |
| Commanders: Attack (Nov 26, 2007 prototype) | 26 November 2007 | Xbox 360 | Turn Based | - |
| Commando (Apr 29, 1988 prototype) | 29 April 1988 | Atari 7800 | Shooter | - |
| Commandos 2 (Nov 28, 2002 prototype) | 28 November 2002 | Game Boy Advance | Action | ✓ |
| Commandos 2: Men of Courage (Aug 12, 2002 prototype) | 12 August 2002 13:06:55 | Xbox | Real-Time Strategy | - |
| Commandos: Strike Force (Feb 28, 2005 prototype) | 28 February 2005 19:11:24 | PlayStation 2 | FPS | - |
| Community Games Player Pack (May 27, 2009 prototype) | 27 May 2009 | Xbox 360 | Compilation | - |
| Complete Onside Soccer (Feb 27, 1996 prototype) | 27 February 1996 18:29:38 | PlayStation | Sports - Soccer | - |
| Compton's Interactive Encyclopedia (Oct 27, 1992 prototype) | 27 October 1992 03:25:22 | Philips CD-i | Reference | - |
| Computer BattleTech (Jan 22, 1998 prototype) | 22 January 1998 | PC | Strategy | ✓ |
| Conan (Aug 28, 2007 prototype) | 28 August 2007 | Xbox 360 | Action | - |
| Conan (Sep 17, 2007 prototype) | 17 September 2007 23:42:30 | Xbox 360 | Action | - |
| Condemned 2: Bloodshot (Dec 12, 2007 prototype) | 12 December 2007 | Xbox 360 | Survival Horror | - |
| Condemned 2: Bloodshot (Dec 8, 2007 prototype) | 8 December 2007 00:00:00 | Xbox 360 | Action Adventure | - |
| Condemned 2: Bloodshot (Feb 17, 2008 prototype) | 17 February 2008 | Xbox 360 | Action Adventure | - |
| Condemned 2: Bloodshot (Feb 3, 2008 prototype) | 3 February 2008 | Xbox 360 | Survival horror | - |
| Condemned: Criminal Origins (Aug 11, 2005 prototype) | 11 August 2005 | Xbox 360 | Shooter | - |
| Confidential Mission (Mar 3, 2001 prototype) | 3 March 2001 | Dreamcast | Shooter | - |
| Confidential Mission (Mar 9, 2001 prototype) | 9 March 2001 17:00:37 | Dreamcast | Shooter | - |
| Conflict Zone: Modern War Strategy (Apr 22, 2000 prototype) | 22 April 2000 10:17:30 | PlayStation 2 | Real-time Strategy | - |
| Conflict Zone: Modern War Strategy (Aug 8, 2000 prototype) | 8 August 2000 12:38:06 | PlayStation 2 | Real-time Strategy | - |
| Conflict: Denied Ops (Nov 15, 2007 prototype) | 15 November 2007 12:53:13 | PlayStation 3 | Tactical Shooter | - |
| Conflict: Global Terror (Aug 9, 2005 prototype) | 9 August 2005 09:18:41 | PlayStation 2 | Tactical shooter | - |
| Conflict: Vietnam (Jul 27, 2004 prototype) | 27 July 2004 12:19:18 | PlayStation 2 | Third-person shooter | - |
| Conflict: Vietnam (Prototype) | | Gizmondo | Tactical shooter | ✓ |
| Congo's Caper (Prototype) | | SNES | Action | - |
| Congo: The Movie - The Lost City of Zinj (Feb 13, 1996 prototype) | 13 February 1996 15:37:42 | Sega Saturn | First Person Shooter | - |
| Conker Live & Reloaded (Mar 14, 2005 prototype) | 14 March 2005 | Xbox | Action platform | - |
| Conker's Bad Fur Day (Aug 26, 2000 prototype) | 26 August 2000 | Nintendo 64 | Platform | - |
| Conker's Bad Fur Day (Oct 25, 2000 prototype) | 25 October 2000 | Nintendo 64 | Platform | - |
| Conker: Live & Reloaded (debug build) | | Xbox | Action platform | - |
| Connie Talbot: Over the Rainbow (Jan 29, 2009 prototype) | 29 January 2009 | Nintendo Wii | Music | ✓ |
| Conquest Earth (Aug 18, 1997 prototype) | 18 August 1997 | PC | | - |
| Conspiracy: Weapons of Mass Destruction (Feb 6, 2005 prototype) | 7 February 2005 13:34:56 | PlayStation 2 | First-person shooter | - |
| Constantine (Nov 18, 2004 prototype) | 18 November 2004 | PlayStation 2 | Action-Adventure | - |
| Constantine (Nov 24, 2004 prototype) | 24 November 2004 15:27:08 | Xbox | Action-Adventure | - |
| Contact (Apr 27, 2006 prototype) | 27 April 2006 | Nintendo DS | RPG | - |
| Contra (Oct 25, 2006 prototype) | 25 October 2006 | Xbox 360 | Action | - |
| Contra (Sample Prototype) | | NES | side scrolling shooter | - |
| Contra (Test Prototype) | | NES | run-n-gun | - |
| Contra 4 (April 5, 2007 prototype A) | 5 April 2007 | Nintendo DS | | - |
| Contra 4 (April 5, 2007 prototype B) | 5 April 2007 | Nintendo DS | | - |
| Contra 4 (August 7, 2007 prototype) | 7 August 2007 | Nintendo DS | | - |
| Contra 4 (August 8, 2007 18:30:54 prototype) | 8 August 2007 18:30:54 | Nintendo DS | | - |
| Contra 4 (August 8, 2007 18:47:29 prototype) | 8 August 2007 18:47:29 | Nintendo DS | | - |
| Contra 4 (August 8, 2007 21:39:53 prototype) | 8 August 2007 21:39:53 | Nintendo DS | | - |
| Contra 4 (February 7, 2007 prototype) | 7 February 2007 | Nintendo DS | | - |
| Contra 4 (January 23, 2008 prototype A) | 23 January 2008 | Nintendo DS | | - |
| Contra 4 (January 23, 2008 prototype B) | 23 January 2008 | Nintendo DS | | - |
| Contra 4 (July 9, 2007 prototype) | 9 July 2007 | Nintendo DS | | - |
| Contra 4 (June 27, 2007 Prototype) | 27 June 2007 22:19:55 | Nintendo DS | run-n-gun | - |
| Contra 4 (June 28, 2007 prototype) | 28 June 2007 | Nintendo DS | | - |
| Contra 4 (March 16, 2007 prototype) | 16 March 2007 | Nintendo DS | | - |
| Contra 4 (March 27, 2007 prototype) | 27 March 2007 | Nintendo DS | | - |
| Contra 4 (March 7, 2007 prototype) | 7 March 2007 | Nintendo DS | | - |
| Contra Advance (Review Prototype) | | Game Boy Advance | run-n-gun | - |
| Contra Evolution (Feb 10, 2010 prototype) | 10 February 2010 10:49:51 | Xbox 360 | 3D Shooter, Run-N-Gun | ✓ |
| Contra III: The Alien Wars (Review Prototype) | | SNES | run-n-gun | - |
| Contra IV: The Alien Wars (Regional Intermediate Prototype) | | SNES | run-n-gun | - |
| Contra Spirits (Sample Prototype) | | SNES | run-n-gun | - |
| Contra: Legacy of War (Aug 23, 1996 prototype) | 23 August 1996 19:41:38 | PlayStation | Run-n-gun | - |
| Contra: Legacy of War (Jan 28, 1997 Prototype) | 28 January 1997 | Sega Saturn | Run-n-gun | - |
| Contra: Legacy of War (Oct 3, 1996 prototype) | 3 October 1996 04:12:38 | PlayStation | 3D Shooter, Run-N-Gun | - |
| Contra: Shattered Soldier (Jul 1, 2002 prototype) | 1 July 2002 11:15:30 | PlayStation 2 | Run and gun | - |
| Contra: Shattered Soldier (May 8, 2002 prototype) | 8 May 2002 14:52:40 | PlayStation 2 | Shoot em Up | - |
| Controller Pak Test Program v5.4 (Prototype) | | Nintendo 64 | Diagnostic | ✓ |
| Controller Test Cartridge | | SNES | Hardware Diagnostics | - |
| Cool Boarders 2001 (Aug 21, 2000 prototype) | 21 August 2000 11:20:14 | PlayStation | Snowboarding | - |
| Cool Boarders 3 (Jul 1, 1998 prototype) | 1 July 1998 18:57:10 | PlayStation | Sports - Snowboarding | - |
| Cool Boarders Burrrn (Aug 19, 1999 prototype) | 19 August 1999 18:20:13 | Dreamcast | Sports - Snowboarding | - |
| Cool Boarders Burrrn (Jun 22, 1999 prototype) | 22 June 1999 19:57:34 | Dreamcast | Sports - Snowboarding | - |
| Cool Cool Jam (Demo) | | Neo Geo Pocket Color | Rhythm | - |
| Cool Spot (European build) | | Sega Mega Drive | Platform | - |
| Cool Spot (Mega Drive prototype) | | Sega Mega Drive | Platform | - |
| Cooly Skunk (Prototype) | | SNES | Action | ✓ |
| Corn Buster (Prototype) | | SNES | Action | ✓ |
| Corpse Party: Sweet Sachiko’s Hysteric Birthday Bash (Trial demo) | | PlayStation Portable | Adventure | - |
| Corridor 8 (prototype) | | PC | | ✓ |
| Corvette (Aug 4, 2003 prototype) | 4 August 2003 21:01:08 | Xbox | Racing | - |
| Cosmic Carnage (Oct 11, 1994 prototype) | 11 October 1994 06:32:32 | Sega 32X | Fighter (2D) | - |
| Cosmic Carnage (Oct 13, 1994 prototype) | 13 October 1994 06:42:58 | Sega 32X | Fighter (2D) | - |
| Cosmic Carnage (Oct 4, 1994 prototype) | 4 October 1994 09:43:02 | Sega 32X | Fighter (2D) | - |
| Cosmic Carnage (Oct 5, 1994 prototype) | 5 October 1994 09:17:16 | Sega 32X | Fighter (2D) | - |
| Cosmic Carnage (Oct 7, 1994 prototype) | 7 October 1994 09:40:00 | Sega 32X | Fighter (2D) | - |
| Cosmic Carnage (Sep 21, 1994 prototype) | 26 September 1994 06:41:50 | Sega 32X | Fighter (2D) | - |
| Cosmic Carnage (Sep 26, 1994 prototype) | 27 September 1994 19:41:46 | Sega 32X | Fighter (2D) | - |
| Cosmic Carnage (Sep 28, 1994 prototype) | 3 October 1994 08:39:24 | Sega 32X | Fighter (2D) | - |
| Cosmic Carnage (Sep 6, 1994 prototype) | 6 September 1994 14:24:30 | Sega 32X | Fighter (2D) | - |
| Cosmic Swarm (prototype) | | Atari 2600 | Fixed Shooter | - |
| Cosmo Tank (US Prototype) | | Game Boy | Action | - |
| Cosmos Chaos (prototype) | | Nintendo DS | Edutainment | - |
| Costume Quest (Aug 22, 2010 prototype) | 22 August 2010 | Xbox 360 | Action & Adventure | - |
| Countdown Vampires (Feb 15, 2000 prototype) | 15 February 2000 13:14:48 | PlayStation | Survival Horror | - |
| Counter-Strike (Oct 22, 2003 prototype) | 22 October 2003 | Xbox | First-Person Shooter | - |
| Counter-Strike (Sep 5, 2003 prototype) | 5 September 2003 02:52:45 | Xbox | First-Person Shooter | - |
| Counter-Strike: Condition Zero (Sep 24, 2003 prototype) | 24 September 2003 | PC | Shooter | - |
| Counter-Strike: Global Offensive (Aug 8, 2011 prototype) | 8 August 2011 | PC | First-Person Shooter | - |