XBOX 360 Titles Starting with 'O' and 'P'
- Omega Five
- Open Season
- Operation Darkness
- Orange Box, The
- Orochi Warriors
- Outfit, The
- Outpost Kaloki X
- Over G Fighters
- Overlord
- Pac-Man
- Pac-Man: Championship Edition
- Paperboy
- PDC World Championship Darts 2008
- Penny Arcade Adventures: On The Rain-Slick Precipice Of Darkness - Episode One
- Penny Arcade Adventures: On The Rain-Slick Precipice Of Darkness - Episode Two
- Perfect Dark Zero
- Peter Jackson's King Kong
- Phantasy Star Universe
- Phantasy Star Universe: Ambition Of The Illuminus
- Pimp My Ride
- Pinball FX
- Pirates Of The Caribbean: At World's End
- Pirates vs. Ninjas Dodgeball
- Plunder: Age Of Booty
- Pocketbike Racer
- Poker Smash
- Portal: Still Alive
- Prey
- Prince Of Persia Classic
- Prizefighter
- Pro Evolution Soccer 2008
- Pro Evolution Soccer 2009
- Pro Evolution Soccer 6
- Pro Yakyuu Spirits 3
- Project Gotham Racing 3
- Project Gotham Racing 4
- Project Sylpheed: Arc Of Deception
- Pure
- Puzzle Arcade
- Puzzle Quest: Challenge Of The Warlords
- Puzzle Quest: Challenge Of The Warlords - Revenge Of The Plague Lord