| Pac-Man World 2 | Xbox | Platformer | To Be Announced |
| Pac-Man World 3 | Xbox | Action | 11/15/2005 |
| Pac-Man World Rally | Xbox | Racing/Driving | Cancelled |
| Painkiller: Hell Wars | Xbox | First Person Shooter | 7/11/2006 |
| Panzer Dragoon Orta | Xbox | Shooter | 1/14/2003 |
| Panzer Elite Action | Xbox | Simulation | Q4 2005 |
| Pariah | Xbox | First Person Shooter | 5/3/2005 |
| Payout Poker and Casino | Xbox | Sports | To Be Announced |
| Peter Jackson's King Kong | Xbox | Action/Adventure | 11/21/2005 |
| Phantasy Star Online | Xbox | MMO | 4/15/2003 |
| Phantom Crash | Xbox | Shooter | 11/11/2002 |
| Phantom Dust | Xbox | Strategy | 3/15/2005 |
| Pillage | Xbox | Action/RPG | Cancelled |
| Pilot Down: Behind Enemy Lines | Xbox | Action/Adventure | May. 2005 |
| Pinball Hall of Fame | Xbox | Family | 11/17/2004 |
| Pirates of the Caribbean | Xbox | Action/RPG | 6/24/2003 |
| Pirates: Legend of Black Kat | Xbox | Adventure | 3/19/2002 |
| Pitfall: The Lost Expedition | Xbox | Platformer | 2/18/2004 |
| Plague of Darkness | Xbox | Action/Adventure | To Be Announced |
| Playboy: The Mansion | Xbox | Simulation | 1/25/2005 |
| PocketBike Racer | Xbox | Racing/Driving | 11/19/2006 |
| Pool Paradise | Xbox | Sports | To Be Announced |
| Pool Shark 2 | Xbox | Simulation | To Be Announced |
| Powerdrome | Xbox | Racing/Driving | 6/16/2004 |
| Predator: Concrete Jungle | Xbox | Action/Adventure | 4/26/2005 |
| Prince of Persia: Sands of Time | Xbox | Action/Adventure | 11/18/2003 |
| Prince of Persia: The Two Thrones | Xbox | Action/Adventure | 11/29/2005 |
| Prince of Persia: Warrior Within | Xbox | Action/Adventure | 11/30/2004 |
| Prisoner of War | Xbox | Action/Stealth | 8/6/2002 |
| Pro Cast Sports Fishing | Xbox | Sports | 8/26/2003 |
| Pro Evolution Soccer 5 | Xbox | Sports | Q4 2005 |
| Pro Fishing Challenge | Xbox | Sports | 8/31/2004 |
| Pro Race Driver | Xbox | Racing/Driving | 4/15/2003 |
| Project Gotham Racing | Xbox | Racing/Driving | 11/15/2001 |
| Project Gotham Racing 2 | Xbox | Racing/Driving | 11/4/2003 |
| Project Nomads | Xbox | Action/RPG | Cancelled |
| Project: Snowblind | Xbox | First Person Shooter | 2/22/2005 |
| ProStroke Golf: World Tour 2007 | Xbox | Sports | 9/9/2006 |
| Psi-Ops: The Mindgate Conspiracy | Xbox | Action/Adventure | 6/14/2004 |
| Psychonauts | Xbox | Platformer | 4/19/2005 |
| Puddle | Xbox | Action | To Be Announced |
| Pulse Racer | Xbox | Combat Racing | 12/10/2002 |
| Pump It Up: Exceed SE | Xbox | Music/Dance | 8/29/2005 |
| Pure Pinball | Xbox | Simulation | 8/4/2004 |
| Putt Nutz | Xbox | Sports | Cancelled |
| Puyo Pop Fever | Xbox | Puzzle | To Be Announced |