Section - PC Cheats
PC Cheats
- O.D.T.
- O.R.B.
- O.R.B. - Off-World Resource Base
- Obscure
- Ocean Trader
- Odd World: Abe's Oddysey
- OddBallz
- Oddworld 2: Abe's Exoddus
- Oddworld: Abe's Exodus
- Oddworld: Abe's Oddysee
- Odell Down Under
- Odium
- ODT Escape: Or Die Trying
- Offensive
- Officers
- Official Formula 1 Racing
- Official Hamster Republic RPG Creation Engine
- Official Team Manager (EA Sports)
- Oh No! More Lemmings
- Oil Tycoon
- Oldtimer
- Omikron: The Nomad Soul
- Once Upon A Knight
- One Must Fall 2097
- One must Fall: 2097
- One Must Fall: Battlegrounds
- One Piece Grand Battle
- One Step Beyond
- Oni
- Onimusha 3: Demon Siege
- Onimusha: Warlords
- Open Season
- Operation Blockade
- Operation Bodycount
- Operation Carnage
- Operation Flashpoint
- Operation Flashpoint -- Game of the Year Edition
- Operation Flashpoint: Cold War Crisis
- Operation Flashpoint: Red Hammer
- Operation Flashpoint: Red Hammer: The Soviet Campaign
- Operation Flashpoint: Resistance
- Operation Meteorit
- Operation Meteorite
- Operation Steel Tide
- Operation Thunderbolt
- Operation Tiger Hunt
- Operation Wolf
- Operation: Inner Space
- Operational Art of War 2, The
- Operative, The: No One Lives Forever
- Oregon Trail
- Oregon Trail 2
- Oregon Trail 3 Anniversary
- Oregon Trail 3: 150th Anniversary
- Origin of the Species
- Original War
- Oscar
- Otto Matic
- Out of the Park Baseball 6
- Out of the Park Baseball Manager 2006
- Out of this World
- Out To Lunch
- Outbound
- Outbreak
- Outbreakers
- Outcast
- Outdoor Life Sportsman's Challenge
- Outdoor Life: Sportsman's Challenge
- Outer Ridge
- Outforce
- Outlaw Chopper
- Outlaw Golf
- Outlaws
- Outlive
- Outpost
- Outpost 2
- Outpost 2: Divided Destiny
- Outrun
- OutRun 2006: Coast 2 Coast
- Outwars
- Over the Hedge
- Overboard!
- Overdrive
- Overkill
- Overload
- Overlord
- Oxyd
- Oxyd Extra
- Oxyd Magnum
- Oyomesan wa Hime Fujo
