Best Games by Popularity: O
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Orion: Dino Horde
- Release Date: Apr 15, 2013
- Gentre: Sci-Fi First-Person Shooter
Orion: Dino Horde (formerly known as Orion: Dino Beatdown) is an open world, class-based cooperative survival Sci-Fi FPS.
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Ocean City Racing
- Release Date: May 20, 2013
- Gentre: Racing
Ocean City Racing is an open-world indie driving game powered by the Unreal Engine 3 featuring the biggest, most detailed open-world environment, advanced driving physics, and high-quality visuals.
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Of Orcs and Men
- Release Date: Oct 11, 2012
- Gentre: Action Role-Playing
Of Orcs and Men is a role-playing game that places players in the role of an elite Orc soldier. Read the Review
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Overlord II
- Release Date: Jun 23, 2009
- Gentre: Fantasy Action Adventure
Overlord II is the sequel to the original fantasy action adventure game. Read the Review
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The Orange Box
- Release Date: Oct 10, 2007
- Gentre: Sci-Fi First-Person Shooter
The Orange Box includes the original Half Life 2, Episodes One and Two, Team Fortress 2, and an additional single-player game called Portal. Read the Review
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Omerta: City of Gangsters
- Release Date: Jan 31, 2013
- Gentre: Strategy
Omerta - City of Gangsters is a simulation game with tactical turn-based combat where players take the role of a fresh-from-the-boat immigrant with dreams of the big life who must work his way up the criminal hierachy of 1920's Atlantic City. Read the Review
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Oddworld: Abe's Oddysee
- Release Date: Oct 31, 1997
- Gentre: 2D Platformer
Abe's is the ideal platformer, balancing its action and puzzle elements perfectly to make the game intelligent, engaging, and, best yet, fun. Read the Review
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Orcs Must Die! 2
- Release Date: Jul 30, 2012
- Gentre: Action
Orcs Must Die! 2 is an action strategy game from Robot Entertainment. Read the Review
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Outcast
- Release Date: Jul 31, 1999
- Gentre: Adventure
The story helps make even its silliest puzzle seem relevant and the game comprises an enormous world populated with interesting characters. Read the Review
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Omikron: The Nomad Soul
- Release Date: Nov 2, 1999
- Gentre: Adventure
Omikron's purported innovation and originality amount to nothing more than the senseless combination of unrelated but very familiar play styles. Read the Review
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Obsidian
- Release Date: Dec 31, 1996
- Gentre: Adventure
From beginning to end, Obsidian is an entertaining, surreal romp. Read the Review
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The Operational Art of War II: Modern Battles 1956 - 2000
- Release Date: Apr 30, 1999
- Gentre: Strategy
The Operational Art of War II is a continuation and enhancement, not a radical revision, of designer Norm Koger's ambitious operational wargame. Read the Review
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The Operational Art of War, Vol. 1
- Release Date: May 31, 1998
- Gentre: Strategy
The Operational Art of War is a class act all the way, offering almost every feature a wargamer could want. Read the Review
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One Must Fall: Battlegrounds
- Release Date: Dec 19, 2003
- Gentre: 3D Fighting
There certainly isn't anything else out there that's quite like it, so fans of other fighting games should give it a look. Read the Review
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