| Abducted | Xbox | Survival/Horror | To Be Announced |
| Ace Combat Assault Horizon | Xbox | Action | To Be Announced |
| Advent Rising | Xbox | Action | 5/31/2005 |
| Aeon Flux | Xbox | Action/Adventure | 11/15/2005 |
| Aggressive Inline | Xbox | Extreme Sports | 7/30/2002 |
| Airforce Delta Storm | Xbox | Action | 11/15/2001 |
| Alias | Xbox | Action | 4/6/2004 |
| Alien Hominid | Xbox | Platformer | May. 2005 |
| Aliens vs Predator: Extinction | Xbox | Real Time Strategy | 7/29/2003 |
| All-Star Baseball 2003 | Xbox | Sports | 2/28/2002 |
| All-Star Baseball 2004 | Xbox | Sports | 2/27/2003 |
| All-Star Baseball 2005 | Xbox | Sports | 3/23/2004 |
| Alter Echo | Xbox | Action/Adventure | 8/18/2003 |
| America's Army: Rise of a Soldier | Xbox | First Person Shooter | 11/15/2005 |
| America's Ten Most Wanted | Xbox | First Person Shooter | 2004 |
| American Chopper | Xbox | Racing/Driving | 12/3/2004 |
| American Chopper 2: Full Throttle | Xbox | Racing/Driving | 11/16/2005 |
| AMF Bowling 2004 | Xbox | Sports | 12/1/2003 |
| AMF Xtreme Bowling 2006 | Xbox | Sports | 6/30/2006 |
| Amped | Xbox | Extreme Sports | 11/20/2001 |
| Amped 2 | Xbox | Sports | 10/28/2003 |
| AND 1 Streetball | Xbox | Sports | 6/6/2006 |
| Animaniacs: The Great Edgar Hunt | Xbox | Action/Adventure | Cancelled |
| Antz Extreme Racing | Xbox | Racing/Driving | 8/27/2002 |
| APEX | Xbox | Racing/Driving | 2/18/2003 |
| Apocaylptica | Xbox | Action/Adventure | 11/4/2003 |
| Apprentice Knight | Xbox | Action | To Be Announced |
| Aquaman: Battle for Atlantis | Xbox | Action/Adventure | 7/15/2003 |
| Arctic Thunder | Xbox | Racing/Driving | 11/15/2001 |
| Area 51 | Xbox | First Person Shooter | 4/25/2005 |
| Arena Football | Xbox | Sports | 2/7/2006 |
| Armada 2: Exodus | Xbox | Shooter | 1/1/2003 |
| Armed & Dangerous | Xbox | Action/Shooter | 12/2/2003 |
| Army Men Major Malfunction | Xbox | Action/Shooter | 4/11/2006 |
| Army Men: Sarge’s War | Xbox | Action/Shooter | 8/2/2004 |
| Arx Fatalis | Xbox | RPG | 12/23/2003 |
| Asylum | Xbox | Survival/Horror | Cancelled |
| Atari Anthology | Xbox | Compilations | 11/16/2004 |
| ATV Quad Power Racing 3 | Xbox | Racing/Driving | Q2 2005 |
| ATV: Quad Power Racing 2 | Xbox | Racing/Driving | 1/28/2003 |
| Auto Modellista | Xbox | Racing/Driving | 1/21/2004 |
| Avatar: The Last Airbender | Xbox | Action/Adventure | 10/10/2006 |
| Azurik: Rise of Perathia | Xbox | Action | 12/15/2001 |