Developed by Fluik for iOS

Office Jerk is a misc game developed by Fluik and released on iOS.

Developed by Climax Group for Wii

Overlord: Dark Legend is an action game developed by Climax Group and released on Wii.

Developed by Omega Force for PS3, PSV

One Piece: Pirate Warriors 2 is an action game developed by Omega Force and released on PlayStation 3, PlayStation Vita.

Developed by Clover Studio for PS2, PS3, Wii

Okami is an action-adventure game developed by Clover Studios for the PlayStation 2, Wii and is planned to release on PSN. It was announced at E3 2005 and released for the PS2 on April 20, 2006 in Japan, September 19, 2006 in North America and February 9, 2007 in Europe. It was later released for the Wii on April 15, 2008 in North America, June 13, 2008 in Europe and October 15, 2009 for Japan.

Developed by SuperVillain Studios for 3DS, PS3, PSV

Order Up!! is an action game developed by SuperVillain Studios and released on Nintendo 3DS, PlayStation 3, PlayStation Vita.

for PS

Osaka Naniwa Matenrow is a strategy game released on PlayStation.

Developed by Namco Bandai Games for DS

Ore-Sama Kingdom: Koi no Manga mo Debut o Mokushise! Doki Doki Love Lesson is an action game developed by Namco Bandai Games and released on Nintendo DS.

Developed by Andela ICT for iOS

Origami Break is a misc game developed by Andela ICT and released on iOS.

Developed by Hudson Soft for DS

Original Story from Fairy Tail: Gekitotsu! Kardia Daiseidou is a role-playing game developed by Hudson Soft and released on Nintendo DS.

Developed by Veiled Games for iOS

Outnumbered - 3D Multiplayer Survival is an adventure game developed by Veiled Games and released on iOS.

Developed by BlueGill Studios for iOS

Open Fire Gold is an action game developed by BlueGill Studios and released on iOS.

Developed by Fizz Software Ltd. for iOS

Outsmart is a misc game developed by Fizz Software Ltd. and released on iOS.

Developed by Ganbarion for 3DS

One Piece Unlimited Cruise SP is an action game developed by Ganbarion and released on Nintendo 3DS.

Developed by James Dailey for iOS

Online Sniper League is an action game developed by James Dailey and released on iOS.

Developed by FDI for WIN, PS

O.D.T.: Escape... Or Die Trying is an adventure game developed by FDI and released on Microsoft Windows, PlayStation.

Developed by Hydravision Entertainment for WIN, PS2, XB

Obscure is an adventure game developed by Hydravision Entertainment and released on Microsoft Windows, PlayStation 2, Xbox.

Developed by Oddworld Inhabitants, Just Add Water for WIN, PS3, PSV, X360

Oddworld: Abe's Oddysee New N' Tasty is an upcoming, full-fledged remake of the Playstation One puzzle-platformer Oddworld: Abe's Oddysee.

Developed by EA Redwood Shores for WIN

Operation Mania is a simulation game developed by EA Redwood Shores and released on Microsoft Windows.

Developed by Team Dropkick for iOS

One Life, One Chance is a racing game developed by Team Dropkick and released on iOS.

Developed by HuneX for WIN, PS2

Otometeki Koi Kakumei * Love Revo is an adventure game developed by HuneX and released on Microsoft Windows, PlayStation 2.

Developed by VeganSoft

OX word - Korean - Body is a misc game developed by VeganSoft.

Developed by IonFX for WIN

Obulis is a puzzle game developed by IonFX and released on Microsoft Windows.

Developed by Success for X360

Operation Darkness is a role-playing game developed by Success and released on Xbox 360.

Developed by City Interactive

Operation Thunderstorm is a shooter game developed by City Interactive.

Developed by Avalon Style Entertainment for WIN, PS3, X360

Off-Road Drive is a racing game developed by Avalon Style Entertainment and released on Microsoft Windows, PlayStation 3, Xbox 360.

Developed by Innovation Dreams AB

Omvänd Frågesport - Du måste svara fel is a misc game developed by Innovation Dreams AB.

Developed by ASCII Media Works for DS

Ookami to Koushinryou: Omiowataru Kaze is an adventure game developed by ASCII Media Works and released on Nintendo DS.

Developed by Xilam for GBA

Oggy and the Cockroaches is a platform game developed by Xilam and released on Game Boy Advance.

Developed by Namco Bandai Games for PSP

Ore no Imouto ga Konna ni Kawaii wake ga Nai Portable is an adventure game developed by Namco Bandai Games and released on PlayStation Portable.

Developed by Alfa System for PS, PSP

Ore no Shikabane o Koete Yuke is a role-playing game developed by Alfa System and released on PlayStation, PlayStation Portable.