Best Games by Popularity: O

The Order: 1886 pits well-armed agents against nasty demons in a steampunk-style world.

One Piece: Pirate Warriors is an action game where players control the Straw Hat crew to defeat surrounding pirates. Read the Review

Players will be able to set off on grand adventures with well-beloved characters such as Luffy, Sanji, Zoro and the rest of the Straw Hat crew to explore and conquer island after island while traveling through the New World.

Orcs Must Die! 2 is an action strategy game from Robot Entertainment. Read the Review

Join Capt. Monkey D. Luffy and his Straw Hat Pirates as they search a mysterious island for treasure. Read the Review

Oneechanbara vorteX is an action game for the Xbox 360 from D3. Read the Review

Oni features fluid, dynamic animation, some exciting combat sequences, and a fairly involving story that links everything together. However, it suffers from a few very noticeable problems. Read the Review

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The plain graphics and cookie-cutter objectives can make some of the levels drag a bit, but the storyline and the sheer size of some of the game's levels make the whole package easier to swallow. Read the Review

Orcs Must Die! is a fantasy action strategy game. Read the Review

Onechanbara: Bikini Zombie Slayers is a Wii exclusive featuring the return of Aya and Saki, the last hope against a killer zombie onslaught. Read the Review