| UEFA Champions League 2004 – 2005 | Xbox | Sports | Feb. 2005 |
| UEFA Euro 2004 | Xbox | Sports | 5/4/2004 |
| UFC: Tapout | Xbox | Sports | 2/28/2002 |
| UFC: Tapout 2 | Xbox | Fighting | 3/20/2003 |
| Ultimate Beach Soccer | Xbox | Sports | 10/13/2003 |
| Ultimate Blade of Darkness | Xbox | Action | Q4 2002 |
| Ultimate Pro Pinball | Xbox | Action | 10/31/2006 |
| Ultimate Spider-Man | Xbox | Action | 9/20/2005 |
| Ultra Bust-A-Move | Xbox | Puzzle | 11/3/2004 |
| Underworld | Xbox | Action/Adventure | Cancelled |
| Unholy | Xbox | Action/Adventure | To Be Announced |
| Unreal Championship | Xbox | Action | 10/8/2002 |
| Unreal Championship 2: The Liandri Conflict | Xbox | Action/Shooter | 4/18/2005 |
| Unreal II: The Awakening | Xbox | First Person Shooter | 2/10/2004 |
| Urban Chaos: Riot Response | Xbox | First Person Shooter | 6/13/2006 |
| US Open | Xbox | Sports | Cancelled |
| USS Antarctica | Xbox | Action/Adventure | To Be Announced |