| Art of Fighting (prototype) | |
| Bass Masters Classic (prototype) | |
| Battlefield Hardline (Jan 18, 2015 Multiplayer prototype) | 18 January 2015 23:04:13 |
| Beaterator (May 9, 2008 prototype) | 9 May 2008 |
| Bounced (Prototype) | |
| Bud Redhead - The Time Chase (Early Beta) | 4 October 2002 |
| Bud Redhead: The Time Chase (Project "B") - (Alpha) | 6 April 2001 |
| C: The Contra Adventure (0.8 Prototype) | |
| C: The Contra Adventure Prototype | |
| Cadillacs and Dinosaurs: The Second Cataclysm (Nov 8, 1994 prototype) | 5 November 1994 13:17:45 |
| Champions World Class Soccer (SNES prototype) | |
| Contra III: The Alien Wars (Lab Loaner Prototype) | |
| Contra: Legacy of War (Sample Prototype) | |
| Crimson Skies: High Road to Revenge (E3 prototype) | |
| Cyber Spin (prototype) | |
| Fatal Fury 2 (Prototype) | |
| Goal! (prototype) | |
| Gorby no Pipeline Daisakusen (prototype) | |
| Grand Theft Auto: Chinatown Wars (US 1.0 prototype) | |
| Grand Theft Auto: London 1969 (Apr 11, 1999 prototype) | 11 April 1999 |
| Hot Wheels Track Attack (Pre-Alpha) | |
| Hot Wheels: Stunt Track Challenge (Sep 29, 2004 prototype) | |
| International Track & Field 2000 (40% prototype) | |
| Loadstar: The Legend of Tully Bodine (Sep 14, 1994 prototype) | 14 September 1994 01:06:22 |
| Malice (prototype) | 6 January 2003 |
| Marble Madness (prototype) | |
| Mario Kart 7 (E3 2011 kiosk demo) | |
| Minecraft (June 28, 2010 & June 30, 2010 prototype) | 30 June 2010 |
| Minecraft (May 28, 2009 prototype) | 28 May 2009 |
| Mortal Kombat (Jan 27, 1994 prototype) | 27 January 1994 22:26:42 |
| Need for Speed Underground 2 (Sep 27, 2004 prototype) | 27 September 2004 |
| Nintendo DS press kit (Keep Evolving) | |
| Off the Wall (Jun Amanai Prototype) | |
| Probotector (Sample Prototype) | |
| Probotector (Test Prototype) | |
| Probotector II: Return of the Evil Forces (Sample Prototype) | |
| RalliSport Challenge 2 (Jan 6, 2004 prototype) | 6 January 2004 |
| Samurai Shodown (Oct 21, 1994 prototype) | 21 October 1994 07:07:03 |
| Shift 2: Unleashed (Mar 2, 2011 prototype) | |
| SimCopter 64 (Dec 26, 1997 prototype) | 26 December 1997 |
| Super Battletank 2 (prototype) | |
| Super C Prototype | |
| TOCA Race Driver 3 (AU Review prototype) | |
| Terminator 2: Judgment Day (prototype) | |
| Thrasher Presents: Skate and Destroy (prototype) | |
| Tornado Outbreak (July 2008 prototype) | |
| Treasurebear (Kickstarter Demo) | |
| Twinkle Popo (prototype) | |