| R: Racing Evolution | Xbox | Racing/Driving | 12/9/2003 |
| Racing Evoluzione | Xbox | Racing/Driving | Cancelled |
| RalliSport Challenge | Xbox | Racing/Driving | 3/7/2002 |
| RalliSport Challenge 2 | Xbox | Racing/Driving | 5/4/2004 |
| Rally Fusion:Race of Champions | Xbox | Racing/Driving | 11/12/2002 |
| Rally Trophy | Xbox | Racing/Driving | Mar. 2002 |
| Rapala Pro Fishing | Xbox | Sports | 8/31/2004 |
| Rapala Trophies | Xbox | Action | 4/3/2007 |
| Rayman 3 Hoodlum Havoc | Xbox | Platformer | 3/19/2003 |
| Rayman 4 | Xbox | Platformer | Cancelled |
| Rayman Arena | Xbox | Platformer | 9/24/2002 |
| Raze’s Hell | Xbox | Action/Shooter | 4/25/2005 |
| Ready 2 Rumble | Xbox | Sports | To Be Announced |
| Real World Golf | Xbox | Sports | 4/11/2006 |
| Red Dead Revolver | Xbox | Action/Shooter | 5/3/2004 |
| Red Faction II | Xbox | First Person Shooter | 4/1/2003 |
| Red Ninja: End of Honor | Xbox | Action/Stealth | 3/29/2005 |
| RedCard Soccer 20-03 | Xbox | Sports | 6/25/2002 |
| Reign of Fire | Xbox | Action | 11/6/2002 |
| Rent a Hero No. 1 | Xbox | Action/Adventure | Cancelled |
| Reservoir Dogs | Xbox | Action/Shooter | 10/24/2006 |
| Resonance | Xbox | Survival/Horror | Q2 2005 |
| Retribution | Xbox | First Person Shooter | 2007 |
| Return to Castle Wolfenstein: Tides of War | Xbox | First Person Shooter | 5/6/2003 |
| Richard Burns Rally | Xbox | Racing/Driving | To Be Announced |
| RoadKill | Xbox | Combat Racing | 10/13/2003 |
| Robin Hood: Defender of the Crown | Xbox | Action/Adventure | 9/30/2003 |
| Robocop | Xbox | First Person Shooter | 6/23/2003 |
| Robot Wars | Xbox | Action | To Be Announced |
| Robotech: Battlecry | Xbox | Action | 9/23/2002 |
| Robotech: Invasion | Xbox | Action/Shooter | 10/6/2004 |
| Robots | Xbox | Action | 2/25/2005 |
| Rocky | Xbox | Fighting | 11/12/2002 |
| Rocky Legends | Xbox | Sports | 9/28/2004 |
| Rogue Ops | Xbox | Action/Stealth | 10/28/2003 |
| Rogue Trooper | Xbox | Action/Shooter | 5/23/2006 |
| Roll Call | Xbox | Action/Adventure | 2005 |
| RollerCoaster Tycoon | Xbox | Simulation | 3/25/2003 |
| Rolling | Xbox | Sports | Q4 2002 |
| Room Zoom | Xbox | Racing/Driving | 7/10/2004 |
| Rugby 06 | Xbox | Sports | 2/14/2006 |
| Rugby 2005 | Xbox | Sports | 3/8/2005 |
| Rugby Challenge 2006 | Xbox | Sports | Q4 2005 |
| Rugby League | Xbox | Sports | To Be Announced |
| Run Like Hell | Xbox | Action | 4/8/2003 |
| Runebrid | Xbox | RPG | Q4 2001 |