| | Date | System |
|---|
| Adventure Island III (Prototype) | | NES |
| Aero the Acro-Bat 2 (Aug 8, 1994 prototype) | 8 August 1994 | SNES |
| Akira (Prototype) | | Sega Mega Drive |
| Arcade's Greatest Hits: The Atari Collection 1 (Apr 11, 1997 prototype) | 11 April 1997 | SNES |
| Arcade's Greatest Hits: The Atari Collection 1 (Feb 10, 1997 prototype) | 10 February 1997 | SNES |
| Arcade's Greatest Hits: The Atari Collection 1 (Feb 11, 1997 prototype) | 11 February 1997 | SNES |
| Atmosfear (Jul 12, 1994 prototype) | 12 July 1994 | SNES |
| Australian Rugby League (Prototype) | | Sega Mega Drive |
| Champions World Class Soccer (Mar 18, 1994 prototype) | 18 March 1994 | Sega Mega Drive |
| Championship Surfer (Aug 15, 2000 prototype) | 15 August 2000 22:02:34 | Dreamcast |
| College Football USA 96 (Jun 21, 1995 prototype) | | Sega Mega Drive |
| Confidential Mission (Mar 3, 2001 prototype) | 3 March 2001 | Dreamcast |
| Crash Bandicoot (Feb 29, 1996 prototype) | 29 February 1996 19:02:01 | PlayStation |
| Dave Mirra Freestyle BMX (Nov 2, 2000 prototype) | 2 November 2000 11:55:22 | Dreamcast |
| Dave Mirra Freestyle BMX (Sep 20, 2000 prototype) | 20 September 2000 22:51:42 | Dreamcast |
| Demolition Racer: No Exit (Aug 2, 2000 prototype) | 2 August 2000 16:05:12 | Dreamcast |
| Doom Troopers: Mutant Chronicles (Prototype A) | | SNES |
| Doom Troopers: Mutant Chronicles (Prototype B) | | SNES |
| Dragon: The Bruce Lee Story (Oct 6, 1994 prototype) | 6 October 1994 15:01:00 | Atari Jaguar |
| Dragon: The Bruce Lee Story (Sep 26, 1994 prototype) | 26 September 1994 19:53:00 | Atari Jaguar |
| Dune II: The Battle for Arrakis (Jan 11, 1994 prototype) | 11 January 1994 | Sega Mega Drive |
| Earthworm Jim (Aug 19, 1994 prototype) | 19 August 1994 | SNES |
| Earthworm Jim (Aug 4, 1994 GameMaster prototype) | 4 August 1994 | SNES |
| Earthworm Jim 2 (Apr 24, 1995 prototype) | 24 April 1995 | SNES |
| Earthworm Jim 2 (Sep 7, 1995 prototype) | 7 September 1995 | SNES |
| Ecco 3D (May 6, 1999 prototype) | 6 May 1999 21:07:46 | Dreamcast |
| Ecco the Dolphin (Apr 21, 1993 prototype) | 21 April 1993 | Sega Mega Drive |
| Ecco the Dolphin (EPROM 20 prototype) | | Game Gear |
| Ecco the Dolphin (Jun 14, 1993 prototype) | 14 June 1993 | Game Gear |
| Ecco the Dolphin: Defender of the Future (Apr 17, 2000 2PM prototype) | 17 April 2000 14:10:10 | Dreamcast |
| Ecco the Dolphin: Defender of the Future (Apr 17, 2000 7AM prototype) | 17 April 2000 07:07:58 | Dreamcast |
| Ecco the Dolphin: Defender of the Future (Apr 19, 2000 prototype) | 19 April 2000 21:52:12 | Dreamcast |
| Ecco the Dolphin: Defender of the Future (Apr 21, 2000 prototype) | 21 April 2000 21:05:24 | Dreamcast |
| Ecco the Dolphin: Defender of the Future (Feb 17, 2000 prototype) | 17 February 2000 14:55:04 | Dreamcast |
| Ecco the Dolphin: Defender of the Future (Jan 26, 2000 prototype) | 26 January 2000 05:22:26 | Dreamcast |
| Ecco the Dolphin: Defender of the Future (Jul 6, 2000 build) | 6 July 2000 20:11:00 | Dreamcast |
| Felix the Cat (Prototype) | | Game Boy |
| Fighting Vipers 2 (Oct 8, 2000 prototype) | 8 October 2000 18:08:30 | Dreamcast |
| Flux (Apr 25, 1995 prototype) | 25 April 1995 | Sega Mega Drive |
| GT 64: Championship Edition (May 25, 1998 prototype) | 25 May 1998 | Nintendo 64 |
| Gex 3: Deep Cover Gecko (Dec 30, 1998 prototype) | 30 December 1998 14:48:20 | PlayStation |
| Ghoul Patrol (PAL build) | | SNES |
| Granada (REV01 prototype) | | Sega Mega Drive |
| Internet Game Pack (Feb 28, 2001 prototype) | 28 February 2001 01:59:40 | Dreamcast |
| MDK2 (Mar 5, 2000 prototype) | 5 March 2000 20:59:32 | Dreamcast |
| MSR: Metropolis Street Racer (Oct 10, 2000 prototype) | 10 October 2000 07:02:32 | Dreamcast |
| MediEvil (Jul 9, 1998 prototype) | 9 July 1998 11:16:53 | PlayStation |
| MediEvil (Jun 22, 1998 prototype) | 22 June 1998 13:34:39 | PlayStation |
| MediEvil II (Dec 20, 1999 prototype) | 20 December 1999 21:37:00 | PlayStation |
| MediEvil II (Feb 29, 2000 prototype) | 29 February 2000 10:25:14 | PlayStation |
| Mickey Mania: The Timeless Adventures of Mickey Mouse (Aug 25, 1994 prototype) | 25 August 1994 10:47:00 | Sega CD |
| Mr. Tuff (Dec 5, 1994 prototype) | 5 December 1994 14:34:00 | SNES |
| NBA Jam (Apr 1993 prototype) | | Sega Mega Drive |
| NHLPA Hockey 93 (Alternate build) | | Sega Mega Drive |
| Panzer Dragoon II Zwei (Feb 5, 1996 prototype) | 5 February 1996 20:36:35 | Sega Saturn |
| Panzer Dragoon Saga (Dec 22, 1997 prototype) | 22 December 1997 | Sega Saturn |
| Panzer Dragoon Saga (Dec 30, 1997 prototype) | 30 December 1997 | Sega Saturn |
| Panzer Dragoon Saga (Nov 30, 1997 prototype) | 30 November 1997 | Sega Saturn |
| Panzer Dragoon Saga (Sep 16, 1997 prototype) | 16 September 1997 | Sega Saturn |
| Pinocchio (Apr 10, 1996 prototype) | 10 April 1996 12:13:00 | SNES |
| Pinocchio (Apr 9, 1996 prototype) | 9 April 1996 12:35:00 | SNES |
| Pinocchio (Aug 5, 1996 prototype) | 5 August 1996 12:05:00 | SNES |
| Pinocchio (Dec 12, 1995 prototype) | 12 December 1995 12:14:00 | SNES |
| Pinocchio (Dec 4, 1995 prototype) | 4 December 1995 17:03:00 | SNES |
| Pinocchio (Dec 6, 1995 prototype) | 6 December 1995 12:42:00 | SNES |
| Pinocchio (Early prototype) | | SNES |
| Pinocchio (Jan 5, 1996 prototype) | 5 January 1996 16:07:00 | SNES |
| Pinocchio (Jan 9, 1996 11.20 prototype) | 9 January 1996 11:20:00 | SNES |
| Pinocchio (Jul 26, 1995 prototype) | 26 July 1995 10:55:00 | SNES |
| Pinocchio (Mar 12, 1996 prototype) | 12 March 1996 14:48:00 | SNES |
| Pinocchio 32x (Dec 6, 1995 prototype) | 6 December 1995 15:09:00 | Sega 32X |
| Primal Rage (Prototype) | | Game Boy |
| Prince of Persia (Altered build) | | Game Boy |
| Psycho Pinball (Prototype) | | Sega Mega Drive |
| Putty Squad (Early prototype) | | Sega Mega Drive |
| Quake 3: Arena (Oct 26, 2000 prototype) | 26 October 2000 18:01:36 | Dreamcast |
| Racing Simulation 2: Monaco Grand Prix Online (Jun 5, 2001 prototype) | 5 June 2001 17:43:08 | Dreamcast |
| Radical Rex (Prototype) | | Sega Mega Drive |
| Resident Evil (Climax Game Boy prototype) | | Game Boy Color |
| Resident Evil 2 (Feb 22, 2000 prototype) | 22 February 2000 14:34:41 | Dreamcast |
| Robin Hood: Prince of Thieves (May 16, 1991 prototype) | 16 May 1991 | NES |
| Robotech: Crystal Dreams (Prototype) | | Nintendo 64 |
| Run Saber (Jan 27, 1993 prototype) | 27 January 1993 | SNES |
| Sega Multimedia Studio: Sega CD Demo (May 29, 1992 prototype) | 29 May 1992 04:04:04 | Sega CD |
| Sonic Adventure 2 (May 21, 2001 prototype) | 21 May 2001 14:15:00 | Dreamcast |
| Sonic Chaos (Jul 13, 1993 prototype) | 13 July 1993 | Sega Master System |
| Sonic Chaos (Jun 30, 1993 prototype) | 30 June 1993 | Sega Master System |
| Sonic Chaos (May 17, 1993 prototype) | 17 May 1993 | Game Gear |
| Sonic the Hedgehog 2 (Aug 21, 1992 prototype) | 21 August 1992 | Sega Mega Drive |
| Sonic the Hedgehog 2 (Sep 14, 1992 prototype) | 14 September 1992 | Sega Mega Drive |
| Sonic the Hedgehog 3 (Nov 3, 1993 prototype) | 3 November 1993 | Sega Mega Drive |
| Sonic the Hedgehog CD (Aug 1, 1993 prototype) | 1 August 1993 16:24:41 | Sega CD |
| Sonic the Hedgehog CD (Aug 19, 1993 prerelease) | 19 August 1993 15:31:21 | Sega CD |
| Sonic the Hedgehog CD (Aug 6, 1993 16:54 prototype) | 6 August 1993 16:54:39 | Sega CD |
| Sonic the Hedgehog CD (Dec 4, 1992 prototype) | 4 December 1992 16:34:01 | Sega CD |
| Sonic the Hedgehog CD (Jul 12, 1993 06:37 prototype) | 12 July 1993 06:47:09 | Sega CD |
| Sonic the Hedgehog CD (Jun 21, 1993 prototype) | 21 June 1993 10:12:41 | Sega CD |
| Sonic the Hedgehog CD (May 12, 1993 prototype) | 12 May 1993 01:03:14 | Sega CD |
| Sonic the Hedgehog CD (Oct 13, 1993 prerelease) | 13 October 1993 00:39:11 | Sega CD |
| Sonic the Hedgehog Pocket Adventure (Oct 22, 1999 prototype) | 22 October 1999 | Neo Geo Pocket Color |
| Spirou (Mega Drive Prototype) | | Sega Mega Drive |
| Splitz (Altered build) | | Game Boy |
| Star Trek: Deep Space Nine – Crossroads of Time (Jul 3, 1995 prototype) | 3 July 1995 | SNES |
| Star Wars (Jan 25, 1993 prototype) | 25 January 1993 | Sega Mega Drive |
| Street Fighter II: Champion Edition (Jul 30, 1993 prototype) | 30 July 1993 | Sega Mega Drive |
| Street Fighter II: Champion Edition (Mar 25, 1993 prototype) | 25 March 1993 | Sega Mega Drive |
| Street Racer (Mar 21, 1995 prototype) | 21 March 1995 | Sega Mega Drive |
| Stunt GP (Jan 19, 2000 prototype) | 19 January 2000 12:53:10 | Dreamcast |
| Super Bomberman 2 (Prototype) | | SNES |
| Super Bomberman 3 (Prototype) | | SNES |
| Super Off Road (Game Boy Prototype) | | Game Boy |
| Super Star Wars: Return of the Jedi (Prototype) | | SNES |
| Superman: Battle for Metropolis (Jan 12, 2001 prototype) | 12 January 2001 04:23:00 | Game Boy Color |
| Tee Off (Dec 8, 1999 prototype) | 8 December 1999 13:41:02 | Dreamcast |
| The Death and Return of Superman (Aug 8, 1994 build) | 8 August 1994 | SNES |
| The Flintstones (Nov 5, 1992 prototype) | 5 November 1992 | Sega Mega Drive |
| The Flintstones (Ocean) (Prototype) | | Sega Mega Drive |
| The Jungle Book (WCES 1994 prototype) | | Sega Mega Drive |
| The Next Tetris: On-Line Edition (Dec 4, 2000 prototype) | 4 December 2000 14:49:00 | Dreamcast |
| Tintin in Tibet (Prototype) | | Sega Mega Drive |
| Tom vs. Jerry: The Chase is On! (Apr 28, 1995 prototype) | 28 April 1995 | SNES |
| Tom vs. Jerry: The Chase is On! (Jul 11, 1994 prototype) | 11 July 1994 | SNES |
| Tomb Raider III (Oct 5, 1998 prototype) | 5 October 1998 15:23:46 | PlayStation |
| Tony Hawk's Pro Skater 2 (Sep 25, 2000 prototype) | 25 September 2000 18:07:52 | Dreamcast |
| Vanishing Point (Oct 25, 2000 prototype) | 25 October 2000 11:29:14 | Dreamcast |
| WWF Royal Rumble (May 17, 2000 prototype) | 17 May 2000 11:06:52 | Dreamcast |
| World of Illusion starring Mickey Mouse & Donald Duck (Prototype B) | | Sega Mega Drive |
