| Game | Cheats List | |||
| Oasis | Savegame | |||
| Obludia | Hints | |||
| Obscure | Trainers, Savegame, No-intro patch, Hints | |||
| Obscure 2 | Trainers | |||
| Obscure: The Aftermath | Savegame, Hints | |||
| Obsidian | Savegame, UHS Module | |||
| Obulis | Hints | |||
| Ocean Trader | Hex Cheats | |||
| Oddworld 2: Abe's Exoddus | Cheat Codes, Hints, Savegame | |||
| Oddworld: Abe's Exoddus | Cheats, Walkthrough | |||
| Oddworld: Abe's Oddysee | Cheat Codes | |||
| Oddworld: Munch's Oddysee | Hints | |||
| Oddworld: Stranger's Wrath | HTrainer, Hints | |||
| Oddworld Stranger's Wrath HD | Trainer | |||
| Odell Down Under | Hints | |||
| Odium | Cheat Codes | |||
| Odium: Gorky 17 | Trainer, No-intro patch | |||
| O.D.T. | Cheat Codes | |||
| Odyssey | Cheat | |||
| Odyssey: The Search for Ulysses | UHS Module | |||
| Offensive | Cheat Codes | |||
| Official Formula 1 Racing | Cheat Codes | |||
| Official Hamster Republic RPG Creation Engine | Cheat Codes | |||
| Official Team Manager | Cheat Codes | |||
| Offroad | Savegame, Trainer, Cheat Codes | |||
| Off-Road Drive | Trainer | |||
| Off-Road Redneck Racing | Unlocker | |||
| Offspring Fling | Hints | |||
| Of Light and Darkness | Walkthrough | |||
| Of Orcs and Men | Trainer | |||
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