PlayStation 4 - O
- Octodad - Dadliest Catch
- Oddworld - Abe's Oddysee - New 'n' Tasty
- Okage - Shadow King
- OlliOlli
- OlliOlli 2 - Welcome To Olliwood
- One Piece - Burning Blood
- One Piece - Pirate Warriors 3
- One Tap Hero
- One Upon Light
- Order - 1886
- Organ Trail - Complete Edition
- Organic Panic
- Outlast
- Outlast - Whistleblower
- Overlord - Fellowship of Evil