Games

Ojarumaru: Tsukiyo ga Ike no Takaramono

2000

Game Boy Color

OloFight

1999

Amiga · Amiga CD32

Fighting

Olympic Games: Atlanta 1996

1996

3DO Interactive Multiplayer

Simulator · Sport

Olympic Soccer

1996 · Silicon Dreams Studios

PlayStation · Sega Saturn · 3DO Interactive Multiplayer

Sport

Olympic Summer Games: Atlanta '96

1996 · Eidos Interactive

PlayStation · Sega Saturn · 3DO Interactive Multiplayer

Sport

One Piece: Maboroshi no Grand Line Boukenki!

2002 · Alpha Unit

Game Boy Color

One Piece: Yume no Luffy Kaizoku-dan Tanjou!

2001 · Alpha Unit

Game Boy Color

Role-playing (RPG)

Onee-san to Issho! Kisekae Paradise

1995 · B.S.S

3DO Interactive Multiplayer

Simulator

Oneesan to Issho! Janken Paradise

1994

3DO Interactive Multiplayer

Card & Board Game

Onside Soccer

2007 · Elite Systems

3DO Interactive Multiplayer

Sport

Opossum Country

2020 · Ben Jelter

Game Boy Color · Game Boy

Adventure · Indie

Oriental Blue

Red Entertainment

64DD

Role-playing (RPG)

Oscar

1993

Amiga · Super Nintendo Entertainment System · Amiga CD32

Platform

Oshinui Tune

2025 · megamittz

Game Boy Color · Game Boy

Shooter

Othello Millennium

1999

Game Boy Color

Strategy · Card & Board Game

Otto's Ottifanten: Kommando Stortebeker

2001 · Kritzelkratz 3000

Game Boy Color

Platform

Ou Dorobou Jing: Angel Version

1999

Game Boy Color

Role-playing (RPG)

Ou Dorobou Jing: Devil Version

1999 · C. P. Brain

Game Boy Color

Role-playing (RPG)

Oukoku no Grand Chef

1996

3DO Interactive Multiplayer

OutRun GB

2025 · Rocketship Park

Game Boy Color

Racing · Arcade

Overkill & Lunar - C

1993

Amiga CD32

Shooter · Arcade

Overserved: Food Fighters!

2026 · FULLSET

Nintendo 64 · Dreamcast · Sega Saturn · PlayStation 4 · +5

Strategy · Puzzle · Arcade · Sport · Indie

Owarai Yoiko no Game-dou: Oyaji Sagashite 3-choume

1999

Game Boy Color

Oyaji Hunter Mahjong

1995 · WARP

3DO Interactive Multiplayer

Card & Board Game