| TÍTULO | PUBL | ESTUDIO | |
|---|---|---|---|
| O.D.T.: Escape... Or Die Trying | 1998 | Psygnosis | |
| ObsCure | 2004 | Microids | |
| Oddworld: Abe's Exoddus | 1998 | GT Interactive | |
| Oddworld: Abe's Oddysee | 1997 | GT Interactive | |
| Oddworld: Munch's Oddysee | 2002 | Microsoft Game Studios | |
| Odisea: La búsqueda de Ulises | 2000 | Cryo Interactive | |
| Omerta: City of Gangsters | 2013 | Kalypso Media | |
| Oni | 2000 | Gathering of Developers | |
| Onimusha: Dawn of Dreams | 2006 | Capcom | |
| Operation Flashpoint: Dragon Rising | 2009 | Codemasters | |
| Orcs Must Die! | 2011 | Robot Entertainment | |
| Orcs Must Die! 2 | 2012 | Robot Entertainment | |
| Original War | 2001 | Virgin Interactive | |
| Oro y gloria: La ruta hacia El Dorado | 2000 | Ubisoft | |
| Outlaws | 1997 | LucasArts | |
| OutRun 2 | 2004 | Sega | |
| OutRun 2006: Coast to Coast | 2006 | Sega | |
| Overlord | 2007 | Codemasters | |
| Overlord II | 2009 | Codemasters | |
| Overwatch | 2016 | Blizzard Entertainment |