Ogre Battle 64: Person of Lordly Caliber
2
Tactical - RPG | 1 player | 2000
One Piece: Grand Adventure
4
Fighting | 2 players | 2006
Operation Wolf
1
Shooter | 1 player | 1990
Out Run 3-D
1
Racing | 1 player | 1989
Othello
1
Board game - Reflexion | 2 players | 1990
Olympic Summer Games
1
Sports | 1 player | 1996
One Piece: Pirates' Carnival
5
Party game | 4 players | 2006
One Piece: Grand Battle
3
Fighting | 2 players | 2005
Office Yeo In Cheon Ha
Party game | 1 player | 2001
Ojanko High School
1
Reflexion | 1 player | 1988
Ojanko Yakata - Shobatsuki Mahjong sen
Reflexion | 1 player | 1986
Ojanko Yakata 2bankan - Shobatsuki Mahjong sen
Reflexion | 1 player | 1987
Ojyousan
Reflexion | 1 player | 1987
Omega Fighter
3
Shoot'em up | 2 players | 1989
Onna Sansirou - Typhoon Gal
1
Action | 2 players | 1985
Operation Thunderbolt
3
Shooter | 2 players | 1988
Orange Club - Maru-hi Kagai Jugyou
Reflexion | 1 player | 1988
Orbit
Puzzle | 1 player | 1978
Ordyne
4
Shoot'em up | 2 players | 1988
One Piece: Grand Adventure
10
Fighting | 2 players | 2006
Otocky
Shoot'em up | 1 player | 1987
Ooumi Nobunaga Den: Geten II
Strategy - Tactical | 1 player | 1997
Olympic Gold: Barcelona '92
2
Sports | 4 players | 1992
Olympic Summer Games: Atlanta 96
Sports | 8 players | 1996
Olympic Soccer
Sports | 4 players | 1996
Outtrigger
2
FPS | 4 players | 2001
Off-World Interceptor
1
Other - Racing | 2 players | 1994
One Piece: Round the Land!
2
Action - Platformer - Beat'em up | 1 player | 2004
Operation Air Assault 2
Action | 1 player | 2007
Obliterate
Action - Shooter | 1 player | 2007
One Piece: Pirates' Carnival
3
Party game | 4 players | 2006
Olympic Summer Games
1
Sports | 4 players | 1996
Ocean Commander
Shoot'em up | 1 player | 2006
Oriental Blue: Ao no Tengai
1
RPG | 1 player | 2003
Okage: Shadow King
RPG | 1 player | 2001
One Piece: Dragon Dream!
1
Action | 1 player | 2005
One Piece Grand Battle! 3
1
Fighting | 2 players | 2003
One Piece Grand Battle! Rush
3
Fighting | 2 players | 2005
Oishinbo: Kyukyoku no Menu 3bon Syoubu
Adventure | 1 player | 1989
Oni II: Innin Densetsu
RPG | 1 player | 1992
Oni III: Kuro no Hakaishin
1
RPG | 1 player | 1993
Oni IV: Kijin no Ketsuzoku
1
RPG | 1 player | 1994
Oni V: Innin wo Tsugumono
RPG | 1 player | 1995
Oni IV: Kijin no Ketsuzoku
RPG | 1 player | 1994
Ottifanten: Kommando Störtebeker
1
Action - Platformer | 1 player | 2001
Onegai Monsters
Adventure - RPG | 1 player | 1999
Operation WinBack 2: Project Poseidon
2
Action | 4 players | 2006
Operation Air Assault
Simulation | 1 player | 2005
Outlaw Golf
Sports | 4 players | 2003
Outlaw Golf 2
3
Sports | 4 players | 2005