O-chan no Oekaki Logic (Japan)
Obitus (USA)
Oda Nobunaga - Haou no Gundan (Japan)
Odekake Lester - Lelele no Le (Japan)
Oekaki Logic (Japan) (NP)
Oekaki Logic 2 (Japan) (NP)
Ogre Battle - The March of the Black Queen (USA)
Okamoto Ayako to Match Play Golf - Ko Olina Golf Club in Hawaii (Japan)
Olivia's Mystery (Japan)
Olympic Summer Games (Europe)
Olympic Summer Games (USA)
On the Ball (Europe)
On the Ball (USA)
Ongaku Tsukuru Kanaderu (Japan)
Onizuka Katsuya Super Virtual Boxing - Shin Kentou Ou Densetsu (Japan)
Oomono Black Bass Fishing - Jinzouko Hen (Japan)
Oonita Atsushi FMW - Kagekara no Chousen (Japan) (Beta)
Oonita Atsushi FMW - Kagekara no Chousen (Japan)
Oozumou Damashii (Japan)
Operation Europe - Path to Victory 1939-45 (USA)
Operation Logic Bomb (Europe)
Operation Logic Bomb (USA)
Operation Thunderbolt (USA)
Oraga Land Shusai - Best Farmer Shuukakusai (Japan) (Sample)
Oraga Land Shusai - Best Farmer Shuukakusai (Japan)
Oscar (Europe)
Oscar (USA)
Ossu!! Karate-bu (Japan)
Othello World (Japan)
