| Title |
Year |
Genre |
| O*G*A Onigokko Royale - Hunter wa Field de Koi o Suru |
2013 |
Adventure |
| Oben |
2009 |
Adventure |
| Obscure - The Aftermath |
2009 |
Adventure |
| Off Road |
2008 |
Racing |
| Okashi na Shima no Peter Pan - Sweet Never Land |
2011 |
Adventure |
| Omerta - Chinmoku no Okite - The Legacy |
2014 |
Adventure |
| OMG-Z |
2011 |
Action |
| Omochabako no Kuni no Alice - Wonderful Wonder World |
2011 |
Adventure |
| Omoi no Kakera - Close To |
2011 |
Adventure |
| Omoide ni Kawaru-Kimi - Memories Off |
2009 |
Adventure |
| One Epic Game |
2011 |
Action |
| One Piece - Romance Dawn - Bouken no Yoake |
2012 |
RPG |
| One Two Boat Racing |
2010 |
Arcade |
| Onechanbara Special |
2011 |
Action |
| Onigokko! Portable |
2013 |
Adventure |
| Online Chess Kingdoms |
2007 |
Chess |
| Onore no Shinzuru Michi o Yuke |
2009 |
Action |
| Ooedo Senryoubako |
2006 |
Arcade |
| Ookami Kakushi |
2009 |
Adventure |
| Open Season |
2006 |
Adventure |
| Orbit |
2011 |
Arcade |
| Ore ni Hatarakette Iwaretemo |
2012 |
Adventure |
| Ore ni Hatarakette Iwaretemo Otsu |
2013 |
Adventure |
| Ore no Dungeon - Desire and Adventurous Spirit |
2006 |
RPG |
| Ore no Imouto ga Konna ni Kawaii Wake ga Nai - Portable ga Tsuzuku Wake ga Nai |
2012 |
Adventure |
| Ore no Imouto ga Konna ni Kawaii wake ga Nai Portable |
2011 |
Adventure |
| Ore no Imouto Maker EX - Imouto to Koishiyo Portable |
???? |
Adventure |
| Ore no Kanojo no Uraomote - Pure Sweet Heart |
2013 |
Adventure |
| Ore no Shikabane o Koete Yuke |
2011 |
Strategy |
| Ore no Shikabane wo Koete Yuke - Koushiki Shinansho Sonochi Tayasanu Tameni 1999 Nenban |
???? |
Other |
| Ore wa Shoujo Mangaka |
2012 |
Adventure |
| Oretachi no Sabage Portable |
2008 |
Action |
| Oretachi no Sabage Versus |
2010 |
FPS |
| Othello |
2010 |
Puzzle |
| Otome wa Boku ni Koishiteru Portable - Futari no Elder |
2011 |
Adventure |
| Otome wa Boku ni Koishiteru Portable |
2010 |
Adventure |
| Otometeki Koi Kakumei * Love Revo! Portable |
2010 |
Adventure |
| Otometeki Koi Kakumei * Love Revo!! 100kg Kara Hajimaru Koi Monogatari |
2013 |
Adventure |
| Otsuge Uranai nan desu. |
2008 |
Educational |
| Ouka Sengoku Portable |
2012 |
Adventure |
| Oumagatoki - Kaidan Romance |
2012 |
Adventure |
| Oumagatoki & Tasogaredoki Twin Pack |
2013 |
Compilation |
| OutRun 2006 - Coast 2 Coast |
2006 |
Racing |
| Over the Hedge - Hammy Goes Nuts |
2006 |
Platform |
| Ozma Wars |
2011 |
Shooter |
