Ogre Battle – The March of the Black Queen (USA)

Oekaki Logic (Japan) (NP)

Out of This World (USA)

Otogirisou (Japan)

Othello World (Japan)

Odekake Lester – Lelele no Le (Japan)

Oscar (Europe)

Operation Thunderbolt (USA)

Out to Lunch (USA)

Obitus (USA)

On the Ball (USA)

Outlander (USA)

Outer World (Japan)

Oscar (USA)

Ongaku Tsukuru Kanaderu (Japan)

Operation Logic Bomb (USA)

Olympic Summer Games (Europe)

Out of This World (USA) (Beta)

On the Ball (Europe)

Otoboke Ninja Colosseum (Japan)

Ossu!! Karate-bu (Japan)

Oonita Atsushi FMW – Kagekara no Chousen (Japan)

Operation Logic Bomb (Europe)

Oekaki Logic 2 (Japan) (NP)