Obitus (US)
Oda Nobunga - Haou no Gundan (J)
Odekake Lester Lelele no Le (J)
Oekaki Logic (J) (NP)
Oekaki Logic 2 (J) (NP)
Ogre Battle (US)
Ohchan no Oekaki Logic (J)
Ohmono Black Bass Fishing - Jinzouko Hen (J)
Okamoto Ayako to Match Play Golf (J)
Olivia Pin Up SlideShow! (PD)
Olivia's Mystery (J)
Olympic Summer Games 96 (E)
Olympic Summer Games 96 (US)
On the Ball (E)
On the Ball (US)
Ongaku Tukoolu Kanadeelu (J)
Onita Atsushi FMV (J)
Onizuka Katsuya Super Virtual Boxing (J)
Operation Europe (US)
Operation Logic Bomb (US)
Operation Thunderbolt (US)
Oraga Land Syusai - Best Farmar Sensyuken (J)
Oscar (US)
Osu!! Karatebu (J)
Othello World (J)
Otoboke Ninja Colosseum (J)
Otogirisou (J)
Out of This World (Beta)
Out of This World (US)
Out to Lunch (E)
Out to Lunch (US)
Outer World (J)
Outlander (E)
Outlander (US)
Ozumou Damashii (J)
