OH MY GODDESS! (see Ah! My Goddess)
OISHINBO
Famicom, "Oishinbo", N/A
Shinsei, 1989, Y???
ITLKE OJARUMARU
Gameboy Color, "OJARUMARU ~tsukiyo ga ike no takaramono~", N/A
Success Co., Ltd., 7/14/00, Y???
(Adventure?)
ONE PIECE
WonderSwan, "From TV animation ONEPIECE ~mezase kaizokuou!~", N/A
Bandai, SWJ-BAN02B, 7/19/00, Y3800
(Adventure Game)
Includes cards and Deluxe Play Map
Gameboy Color, "One Piece- Yume No Luffy Kaizokudan Tanjou!", N/A
Banpresto, 2001, Y????
(Role Playing Game)
Gameboy Color, "One Piece- Maboroshi no Grand Line Boukenhen!", N/A
Banpresto, 2002, Y????
(Role Playing Game)
WonderSwan Color, "One Piece- Niji no Shima Densetsu", N/A
Bandai, 2001, Y????
(Role Playing Game)
WonderSwan Color, "One Piece- Grand Battle Swan Colosseum", N/A
Bandai, 2002, Y????
(Beat-em-up)
WonderSwan Color, "One Piece- Treasure Wars", N/A
Bandai, 2002, Y????
(Action/Board Game)
WonderSwan Color, "One Piece- Treasure Wars 2 Buggy Land he Yokoso", N/A
Bandai, 2002, Y????
(Action/Board Game)
WonderSwan Color, "One Piece- Chopper no Daibouken", N/A
Bandai, 2003, Y????
(Action Role Playing)
ORGUSS
SC-3000, "Orguss", N/A
Sega, 1984, Y????
(Shooting Game)
OUTLANDERS
Famicom, "Outlanders", N/A
Victor Music Industries, Y???
(Action/RPG)
OZANARI DUNGEON
Super Famicom, "Ozanari Dungeon", N/A