| Oh-chan no Oekaki Logic | JP | 1995-09 |
Sunsoft | Commercial |
| Oh-chan no Oekaki Logic 2 | JP | 1996-09 |
Sunsoft | Commercial |
| Oh-chan no Oekaki Logic 3 | JP | 2001-02 |
Sunsoft | Commercial |
| Oha Suta Dance Dance Revolution | JP | 2000-09 |
Konami | Commercial |
| Oja Majo DoReMi Dokkan! Nijiiro ParaDice | JP | 2002-11-28 |
Bandai | Commercial |
| Ojousama Express | JP | 1998-07 |
Media Works | Commercial |
| Ojousama Express | JP | 1998-07-30 |
Media Works | Demo |
| Okappari-ou | JP | 1998-10 |
Naxat Soft | Commercial |
| Olympia, Takasago - Virtua Pachi-Slot III | JP | 1998-05-21 |
Map Japan | Commercial |
| Olympia, Yamasa - Virtua Pachi-Slot II - Jissen! Bishoujo Kouryakuhou | JP | 1997-04-18 |
Map Japan | Commercial |
| Olympic Games | EU | 1996-07 |
U.S. Gold | Commercial |
| Olympic Soccer | DE | 1996-08 |
Eidos Interactive | Commercial |
| Olympic Soccer | EU | 1996-07 |
U.S. Gold | Commercial |
| Olympic Soccer | JP | 1996-11 |
Coconuts Japan | Commercial |
| Olympic Soccer | US | 1996-07 |
Eidos Interactive | Commercial |
| Olympic Summer Games | US | 1996-06-18 |
U.S. Gold | Commercial |
| Omega Assault | EU | 2003-01 |
Phoenix Games | Commercial |
| Omega Boost | EU | 1999-09-14 |
Sony | Commercial |
| Omega Boost | JP | 1999-04-22 |
Sony | Commercial |
| Omega Boost | JP | 1999-04-22 |
Sony Computer Entertainment America | Demo |
| Omega Boost | US | 1999-09 |
Sony | Commercial |
| Omiai Commando - Ba-Couple ni Tsukkomi o | JP | 2000-03-30 |
Enix | Commercial |
| Omise de Tenshu | JP | 1999-04-08 |
Technosoft | Commercial |
| Omizu no Hanamichi | JP | 2000-08-17 |
Pony Canyon | Commercial |
| One | EU | 1998-03 |
ASC Games | Commercial |
| One | FR | 1997-11 |
ASC Games | Demo |
| One | JP | 1999-03-25 |
Capcom | Commercial |
| One | US | 1997-11-30 |
ASC Games | Commercial |
| One Piece Mansion | EU | 2001-11-16 |
Capcom | Commercial |
| One Piece Mansion | JP | 2001-06-21 |
Capcom | Commercial |
| One Piece Mansion | JP | 2001-06-21 |
Capcom Entertainment | Demo |
| One Piece Mansion | US | 2001-10-01 |
Capcom | Commercial |
| One Two Smash - Tanoshii Tennis | JP | 2000-02-24 |
Hect | Commercial |
| Ongaku Tkool - Kanadeeru 2 | JP | 1998-03-12 |
ASCII Entertainment | Commercial |
| Ongaku Tkool 3 | JP | 2001-03-08 |
Enterbrain | Commercial |
| Online Connection CD - For the PlayStation Game Console | US | |
| Demo |
| Onside Complete Soccer | EU | 1997-06 |
Telstar | Commercial |
| Ooedo Fuusui Ingaritsu - Hanabi 2 | JP | 2000-06 |
Magical Company | Commercial |
| Ooumi Nobunaga Den - Geten II | JP | 1997-06 |
I'Max | Commercial |
| Option - Tuning Car Battle | JP | 1998-01-15 |
MTO | Commercial |
| Option - Tuning Car Battle | JP | 1998-01-15 |
MTO | Demo |
| Option - Tuning Car Battle 2 | JP | 1999-02-18 |
Jaleco | Commercial |
| Option - Tuning Car Battle Spec R | JP | 2000-05-11 |
MTO | Commercial |
| Oracle no Houseki - Jewels of the Oracle | JP | 1996-12-06 |
Sunsoft | Commercial |
| Ore no Ryouri | JP | 1999-09-09 |
Sony Computer Entertainment | Commercial |
| Ore no Ryouri | JP | 1999-09-09 |
Sony Computer Entertainment | Demo |
| Ore no Shikabane o Koete Yuke | JP | 1999-06 |
Sony | Commercial |
| Ore no Yotto - Ganbare! Nippon Challenge | JP | 1999-10 |
Tomy | Commercial |
| Ore! Tomba | JP | 1997-12-25 |
Whoopee Camp | Commercial |
| Ore! Tomba | JP | 1997-12-25 |
Whoopee Camp | Demo |
| Oro e Gloria - La Strada per El Dorado | IT | 2000-12 |
Ubisoft | Commercial |
| Oro y Gloria - La Ruta hacia El Dorado | ES | 2000-12 |
Ubisoft | Commercial |
| Osaka Naniwa Matenrou | JP | 1999-04 |
Kid Genius | Commercial |
| Oshigoto-shiki Jinsei Game - Mezase Shokugyou King | JP | 2003-09 |
Takara | Commercial |
| Otenki Kororin | JP | 2002-05-02 |
Takumi | Commercial |
| Othello World II - Yume to Michi e no Chousen | JP | 1995-12-08 |
Tsukuda Original | Commercial |
| Other Life Azure Dreams | AS | 1998-06 |
Konami | Commercial |
| Other Life Azure Dreams | JP | 1998-06 |
Konami | Commercial |
| Otogi Story - Tenshi no Shippo | JP | 2003-02-27 |
Bandai | Commercial |
| Otona no Asobi | JP | 1999-12 |
Nichibutsu | Commercial |
| Oujisama Lv1 | JP | 2002-03-20 |
KID | Commercial |
| Oujisama Lv1.5 - Oujisama no Tamago | JP | 2003-02 |
KID | Commercial |
| Oukyuu no Hihou Tension | JP | 1996-09-27 |
Vap | Commercial |
| Oumagatoki | JP | 2001-08-09 |
Victor Interactive Software | Commercial |
| Oumagatoki 2 | JP | 2001-09 |
Victor Interactive Software | Commercial |
| Our Graduation - Mahjong de Pon! Hanafuda de Koi! | JP | 2000-02 |
KID | Commercial |
| Out Live - Be Eliminate Yesterday | JP | 1997-07-24 |
Sunsoft | Commercial |
| Over Drivin' DX | JP | 1996-04 |
Electronic Arts Victor | Commercial |
| Over Drivin' DX - Rally Edition | JP | 1996-03 |
Electronic Arts | Commercial |
| Over Drivin' II | JP | 1997-07-03 |
Electronic Arts | Commercial |
| Over Drivin' III - Hot Pursuit | JP | 1998-09-23 |
Electronic Arts | Commercial |
| Over Drivin' III - Hot Pursuit | JP | 1998-09-23 |
Electronic Arts | Demo |
| Over Drivin' IV | JP | 1999-06-17 |
Electronic Arts | Commercial |
| Over Drivin' IV | JP | 1999-06-17 |
Electronic Arts | Demo |
| OverBlood | DE | 1997-06 |
Electronic Arts | Commercial |
| OverBlood | EU | 1997-06 |
Electronic Arts | Commercial |
| OverBlood | FR | 1997-06 |
Electronic Arts | Commercial |
| OverBlood | JP | 1996-07 |
Hamster Corporation | Commercial |
| OverBlood | US | 1997-05-18 |
Electronic Arts | Commercial |
| OverBlood 2 | DE | 1999-11 |
Event | Commercial |
| OverBlood 2 | EU | 1999-11 |
Event | Commercial |
| OverBlood 2 | IT | 1999-11 |
EON | Commercial |
| OverBlood 2 | JP | 1998-07-23 |
Riverhill Soft | Commercial |
| OverBlood 2 | JP | 1998-07-23 |
Evolution Games | Demo |
| OverBlood 2 - The East Edge File | JP | |
| Commercial |
| Overboard! | EU | 1997-10 |
Psygnosis | Commercial |
| Oyaji no Jikan - Nee-chan Hanafuda de Shoubu ya! | JP | 2000-02 |
Visit | Commercial |
| Oyaji no Jikan - Nee-chan Mahjong de Shoubu ya! | JP | 2001-08 |
Visit | Commercial |
| Oyaji no Jikan - Nee-chan Tsuri Iku de! | JP | 2000-02 |
Visit | Commercial |
| Oyako Entertainment Series - TV Kamishibai Vol. 1 | JP | 1999-12 |
Konami | Commercial |
| Oz no Mahoutsukai - Another World - Rung Rung | JP | 2000-06 |
Affect | Commercial |