| Title | Year | Publisher | Serial | Rating |
| Oddworld: Abe's Oddysee - New 'n' Tasty! | 2019 | Limited Run Games | BLUS-31621 | 10.0 |
| Oddworld: Stranger's Wrath HD | 2019 | Limited Run Games | BLUS-31620 | none |
| Odin Sphere: Leifthrasir | 2016 | Atlus | BLUS-31601 | 9.3 |
| One Piece: Unlimited World Red | 2014 | Bandai Namco Games | BLUS-31427 | 7.0 |
| Operation Flashpoint: Dragon Rising | 2009 | Codemasters | BLUS-30316 | 8.0 |
| Operation Flashpoint: Red River | 2011 | Codemasters | BLUS-30704 | none |
| Orange Box, The | 2007 | EA Games | BLUS-30055 | 9.1 |
| Order Up!! | 2012 | Ignition Entertainment | BLUS-30904 | 8.0 |
| Overlord II | 2009 | Codemasters | BLUS-30317 | 10.0 |
| Overlord: Raising Hell | 2008 | Codemasters | BLUS-30143 | none |
