O.R.B.: Off-World Resource Base - Strategy First / Strategy First / 2002
ObsCure - Hydravision Entertainment / MC2-Microids / 2004
Obsidian - Rocket Science Games / SegaSoft / 1996
Oddworld: Abe's Exoddus - Oddworld Inhabitants / GT Interactive / 1998
Oddworld: Abe's Oddysee - Oddworld Inhabitants / GT Interactive / 1997
Oil's Well - Sierra On-Line / Sierra On-Line / 1984
Omega Stone, The - Omni Creative / The Adventure Company / 2003
Omikron: The Nomad Soul - Quantic Dream / Eidos Interactive / 1999
One Must Fall 2097 - Diversions Entertainment / Epic Megagames / 1994
One-on-One - Electronic Arts / Electronic Arts / 1984
Oni - Bungie Studios / Gathering of Developers / 2001
Onimusha 3: Demon Siege - Capcom / Capcom / 2005
Onimusha: Warlords - Capcom Production Studio 2, Typhoon Games / Capcom / 2003
Operation Blockade - Screaming Games / Infogrames / 2002
Operation Europe: Path to Victory 1939-45 - KOEI / KOEI / 1994
Operation Flashpoint: Cold War Crisis - Bohemia Interactive / Codemasters / 2001
Operation Flashpoint: Red Hammer - Bohemia Interactive / Codemasters / 2001
Operation Flashpoint: Resistance - Bohemia Interactive / Codemasters / 2002
Operation Stealth - Delphine Software / Interplay / 1990
Operative: No One Lives Forever, The - Monolith Productions / Fox Interactive / 2000
Original War - ALTAR interactive / Virgin Interactive / 2001
Out of This World - Delphine Software / Interplay / 1991
Outcast - Appeal / Infogrames / 1999
Outforce, The - O3 Games / Infinite Loop / 2000
Outlaws - LucasArts Entertainment / LucasArts Entertainment / 1997
Outpost - Sierra On-Line / Sierra On-Line / 1994
Over the Reich - Big Time Software / Avalon Hill / 1996
Overlord - Triumph Studios / Codemasters / 2007

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