| Bugs Bunny & Taz: Time Busters (Aug 5, 2000 prototype) | 5 August 2000 19:26:12 | PlayStation | Platformer | - |
| Bugs Bunny (Aug 4, 1983 prototype) | 4 August 1983 | Atari 2600 | | ✓ |
| Bugs Bunny (Jun 20, 1983 prototype) | | Atari 2600 | | ✓ |
| Build Database PS3 (A prototype) | | PlayStation 3 | | ✓ |
| Build Database PS3 (B prototype) | | PlayStation 3 | | ✓ |
| Bujingai: The Forsaken City (Nov 2, 2003 prototype) | 2 November 2003 | PlayStation 2 | | - |
| Buku Sudoku (Dec 27, 2007 prototype) | 27 December 2007 | Xbox 360 | Puzzle | - |
| Bullet Soul (Sep 14, 2010 prototype) | 14 September 2010 06:28:38 | Xbox 360 | Action | - |
| Bullet Witch (Jan 9, 2007 Prototype) | 9 January 2007 22:30:17 | Xbox 360 | Third Person Shooter | - |
| Bullet Witch (Nov 1, 2006 Prototype) | 1 November 2006 23:41:04 | Xbox 360 | Third Person Shooter | - |
| Bulletstorm (Apr 8, 2010 prototype) | 8 April 2010 23:36:38 | Xbox 360 | First Person Shooter | - |
| Bulletstorm (Dec 20, 2010 Prototype) | 20 December 2010 15:53:14 | Xbox 360 | FPS | - |
| Bulletstorm (May 15, 2010 prototype) | 15 May 2010 00:27:05 | Xbox 360 | First Person Shooter | - |
| Bully: Scholarship Edition (Debug Build) | | Nintendo Wii | Action-Adventure | - |
| Bully: Scholarship Edition (Jan 11, 2008 prototype) | 11 January 2008 | Nintendo Wii | Action-Adventure | - |
| Bully: Scholarship Edition (Late Build) | | Nintendo Wii | Action-Adventure | - |
| Bully: Scholarship Edition (Nov 13, 2007 prototype) | 13 November 2007 | Nintendo Wii | Action-Adventure | - |
| Bully: Scholarship Edition (Nov 16, 2007 prototype) | 16 November 2007 | Nintendo Wii | Action-Adventure | - |
| BurgerTime: World Tour (Jul 7, 2011 prototype) | 7 July 2011 | Xbox 360 | Action | - |
| Burn (Jan 12, 2012 prototype) | 12 January 2012 16:59:15 | Xbox 360 | Action | ✓ |
| Burn (Jan 24, 2012 prototype) | 24 January 2012 16:48:57 | Xbox 360 | Action | ✓ |
| Burn Out (Prototype) | 7 January 1995 | Atari Jaguar | Racing | - |
| 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 10, 2011 prototype) | 10 March 2011 15:57:49 | Xbox 360 | Arcade | - |
| Burnout Crash! (May 12, 2011 prototype) | 12 May 2011 15:22:18 | 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 | - |