- O.D.T. (PS1)
- Obduction (PS4)
- Obliteracers (PS4)
- Obscure: The Aftermath (PSP)
- Observation (PS4)
- Observer (PS4)
- Observer: System Redux (PS5)
- Obsidian (PC)
- Oceanhorn 2: Knights of the Lost Realm (PS5)
- Octahedron (PS4)
- Octodad: Dadilest Catch (PS Vita)
- Octodad: Dadliest Catch (PS4)
- Octopath Traveler (PS4)
- Octopath Traveler (PS5)
- Octopath Traveler II (PS4)
- Octopath Traveler II (PS5)
- Oddballers (PS4)
- Oddworld: Abe's Exoddus (PS1)
- Oddworld: Abe's Oddysee (PS1)
- Oddworld: Abe's Oddysee New N' Tasty! (PS3)
- Oddworld: Munch's Oddysee HD (PS3)
- Oddworld: Munch's Oddysee HD (PS Vita)
- Oddworld: New 'n' Tasty (PS4)
- Oddworld: New 'N' Tasty! (PS Vita)
- Oddworld: Soulstorm (PS4)
- Oddworld: Soulstorm (PS5)
- Oddworld: Stranger's Wrath HD (PS3)
- Oddworld: Stranger's Wrath HD (PS Vita)
- Odin Sphere (PS2)
- Odin Sphere: Leifthrasir (PS3)
- Odin Sphere: Leifthrasir (PS4)
- Odin Sphere: Leifthrasir (PS Vita)
- Off The Grid (PS5)
- Off-World Interceptor Extreme (PS1)
- Ogre Battle: The March of the Black Queen (PS1)
- Oh, Deer! (PS Mobile)
- Oh...Sir! The Insult Simulator (PS4)
- Okabu (PS3)
- Okage: Shadow King (PS2)
- Okami (PS2)
- Okami HD (PS3)
- Okami HD (PS4)
- Okami Sequel (PS5)
- Old Man's Journey (PS4)
- Old Time Hockey (PS4)
- Olija (PS4)
- OlliOlli (PS3)
- OlliOlli (PS4)
- OlliOlli (PS Vita)
- OlliOlli 2: Welcome to Olliwood (PS4)
- OlliOlli 2: Welcome to Olliwood (PS Vita)
- OlliOlli World (PS4)
- OlliOlli World (PS5)
- OlliOlli World: Finding the Flowzone (PS4)
- OlliOlli World: Finding the Flowzone (PS5)
- OlliOlli World: VOID Riders (PS4)
- OlliOlli World: VOID Riders (PS5)
- Olympic Games Tokyo 2020: The Official Video Game (PS4)
- Olympic Soccer: Atlanta 1996 (PS1)
- Olympic Summer Games (PS1)
- Omega Assault (PS1)
- Omega Boost (PS1)
- Omega Quintet (PS4)
- Omega Strikers (PS5)
- Omensight (PS4)
- OMG HD Zombies! (PS Vita)
- OMG-Z (PS Minis)
- Omno (PS4)
- Omori (PS4)
- One (PS1)
- One Epic Game (PS Minis)
- One Move Away (PS5)
- One Night Stand (PS4)
- One Piece Mansion (PS1)
- One Piece Odyssey (PS4)
- One Piece Odyssey (PS5)
- One Piece: Burning Blood (PS4)
- One Piece: Grand Cruise (PS4)
- One Piece: Grand Kingdom (PS4)
- One Piece: Pirate Warriors (PS3)
- One Piece: Pirate Warriors 2 (PS3)
- One Piece: Pirate Warriors 2 (PS Vita)
- One Piece: Pirate Warriors 3 (PS3)
- One Piece: Pirate Warriors 3 (PS4)
- One Piece: Pirate Warriors 3 (PS Vita)
- One Piece: Pirate Warriors 4 (PS4)
- One Piece: Unlimited World Red (PS3)
- One Piece: Unlimited World Red (PS Vita)
- One Piece: Unlimited World Red - Deluxe Edition (PS4)
- One Piece: World Seeker (PS4)
- One Punch Man: A Hero Nobody Knows (PS4)
- One Upon Light (PS4)
- One Way Trip (PS4)
- One Way Trip (PS Vita)
- Onechanbara Z2: Chaos (PS4)
- Onee Chanbara Origin (PS4)
- OneShot: World Machine Edition (PS4)
- ONI: Road to be the Mightiest Oni (PS4)
- ONI: Road to be the Mightiest Oni (PS5)
- Onimusha: Warlords (PS4)
- Onimusha: Way of the Sword (PS5)
- Oninaki (PS4)
- Online Chess Kingdoms (PSP)
- Onrush (PS4)
- Open Me (PS Vita)
- Open Roads (PS4)
- Open Roads (PS5)
- Open Season (PSP)
- Operation Abyss: New Tokyo Legacy (PS Vita)
- Operation Babel: New Tokyo Legacy (PS Vita)
- Operation Flashpoint: Dragon Rising (PS3)
- Operation Flashpoint: Red River (PS3)
- Operation: Tango (PS4)
- Operation: Tango (PS5)
- Operencia: The Stolen Sun (PS4)
- Orbit (PS Minis)
- Orc Attack: Flatulent Rebellion (PS3)
- Orcs Must Die 3 (PS4)
- Orcs Must Die 3 (PS5)
- Orcs Must Die Unchained (PS4)
- Order Up!! (PS3)
- Ore no Ryouri (PS1)
- Oreshika: Tainted Bloodlines (PS Vita)
- Orgarhythm (PS Vita)
- Orphan (PS4)
- Othercide (PS4)
- Oure (PS4)
- Out of Ammo (PS4)
- Outbreak: Shades of Horror Chromatic Split (PS5)
- Outcast: A New Beginning (PS5)
- Outcast: Second Contact (PS4)
- Outer Wilds (PS4)
- Outer Wilds (PS5)
- Outland (PS3)
- Outlast (PS4)
- Outlast II (PS4)
- Outlast: Whistleblower (PS4)
- Outriders (PS4)
- Outriders (PS5)
- OutRun 2006: Coast 2 Coast (PS2)
- OutRun 2006: Coast 2 Coast (PSP)
- OutRun Online Arcade (PS3)
- Outward (PS4)
- Over Jump Rally (PC)
- Over the Hedge: Hammy Goes Nuts! (PSP)
- OverBlood (PS1)
- OverBlood 2 (PS1)
- Overcooked (PS4)
- Overcooked 2 (PS4)
- Overcooked: All You Can Eat (PS4)
- Overcooked: All You Can Eat (PS5)
- Overkill's The Walking Dead (PS4)
- Overland (PS4)
- Overland (PS5)
- Overlord II (PS3)
- Overlord: Fellowship of Evil (PS4)
- Overlord: Raising Hell (PS3)
- Overpass (PS4)
- Overpass 2 (PS5)
- Override 2: Super Mech League (PS4)
- Override 2: Super Mech League (PS5)
- Override: Mech City Brawl (PS4)
- Overruled! (PS4)
- Overwatch (PS4)
- Overwatch 2 (PS4)
- Overwatch 2 (PS5)
- Owlboy (PS4)
- Oxenfree (PS4)
- Oxenfree II: Lost Signals (PS4)
- Oxenfree II: Lost Signals (PS5)