Game Boy

Oni V: Innin no Tsugumono

Pandora Box · 1995

Operation C

Konami · 1991

Opossum Country

Ben Jelter · 2020

Orpheus: To Hell and Back

StudioLoading · 2025

Othello

Kawada · 1986

Otogi Banashi Taisen

Sun L · 1995

Out of Gas

FCI · 1992

Oyatsu Quiz: Mogu-mogu Q - The Quiz Game

Starfish

Pachi-slot Kids 3

Aisystem Tokyo · 1995

Pachinko CR Daiku no Gen-san GB

Nippon Telenet · 1998

Pachinko Time

Marionette · 1989

Pachio-kun: Puzzle Castle

Marionette · 1994

Painter Momopie

Sigma Ent. Inc. · 1990

Panel no Ninja Kesamaru

SAS Sakata · 1992

Parasol Henbee: Niji no Daibouken

SAS Sakata · 1990

Patlabor: The Mobile Police

Yutaka · 1990

Pawapuro GB

Konami Computer Entertainment Nagoya · 1998

Peetan

Nippon Columbia · 1984

Penta Dragon

Japan Art Media · 1992

Personal Organizer and Phone Book

Imagineering, Inc. · 1991

Picross 2

Jupiter Corporation · 1996

Pine Creek

Carmelo Electronics · 2019

Pocket Bomberman

Hudson Soft · 1997

Pocket Kyoro-chan

Jupiter Corporation · 1998