| Oekaki Puzzle 5 (SuperLite 1500 Series)
| 4944076001812 | SLPM-86800 | 2001-4-26
|
| Oekaki Puzzle Battle Vol. 1: Yuusha-Oh GaoGaiGar Version
| 4526519000424 | NTR-P-AMRJ | 2005-12-8
|
| Oekaki Puzzle Shuu (SuperLite 3in1 Series)
| 4944076002109 | SLPM-86955 | 2002-1-24
|
| Off the Wall
| | | 1989-0-0
|
| Off-Road Challenge
| 031719198023 | | 1998-6-30
|
| Off-World Interceptor
| 765979610503 | | 1994-0-0
|
| Off-World Interceptor Extreme
| 765979710502 | | 1997-5-27
|
| Off-World Interceptor Extreme
| 765979210507 | | 1995-5-0
|
| Off-World Interceptor Extreme
| 4988017203583 | SLPS-00122 | 1995-11-22
|
| Offroad Extreme! Special Edition
| 815315000535 | | 2007-11-23
|
| Ogani
| 4517451002300 | | 2005-9-16
|
| Ogawa Noriko No・Ri・Ko
| 4988607250010 | HCD8001 | 1988-12-4
|
| Ogre Battle
| 730865510054 | SLUS-00467 | 1997-11-17
|
| Ogre Battle 64: Person of Lordly Caliber
| 4902370503838 | NUS-NOBJ-JPN | 1999-7-14
|
| Ogre Battle 64: Person of Lordly Caliber
| 730865730032 | | 2000-10-5
|
| Ogre Battle: The March of the Black Queen
| 719631000142 | SNS-OB-USA | 1995-5-0
|
| Oh No!
| 4988126510312 | SLPS-02764 | 2000-11-16
|
| Oh! Bakyuuun
| 4907892010819 | SLPS-02680 | 2000-4-20
|
| Oha Star Dance Dance Revolution GB
| 4542084000065 | CGB-BD5J-JPN | 2001-2-8
|
| Oha-Studio Dance Dance Revolution
| 4542084000003 | SLPM-86603 | 2000-9-14
|
| Ohanaya-san Monogatari GBA
| 4988026810826 | | 2002-7-19
|
| Ohenro-San: Hosshin no Dojo
| 4580144130055 | | 2003-4-24
|
| Oide yo Doubutsu no Mori
| 4902370512656 | NTR-P-ADMJ | 2005-11-23
|
| Oishinbo: DS Recipe Shuu
| 4582224496372 | NTR-P-AOEJ | 2007-3-8
|
| Oja Majo Do-Re-Mi Dokkaan! Nijiiro Para-dice
| 4543112136640 | SLPS-03497 | 2002-11-28
|
| Ojaru-Maru DS: Ojaru to Okeiko Aiueo
| 4527823994782 | NTR-P-YO6J | 2007-12-20
|
| Ojarumaru: Gekkoichou Sanpo de Ojaru
| 4536478000526 | AGB-BOJJ-JPN | 2003-9-5
|
| Ojousama Express
| 4942330412312 | SLPS-01495-6 | 1998-7-30
|
| Ojousama Kumikyoku: Sweet Concert
| 4562168541291 | SLPM-66726 | 2007-4-26
|
| Ojousama Kumikyoku: Sweet Concert (Special Pack Edition)
| 4562168541307 | PIO-07105 | 2007-4-26
|
| Ojousama Sousamou
| 4904323270194 | FXNHE616 | 1996-5-31
|
| Okage: Shadow King
| 711719712923 | SCUS-97129 | 2001-10-2
|
| Okami
| 013388260591 | SLUS-21115 | 2006-9-19
|
| Okami
| 013388350070 | | 2008-4-15
|
| Okappari Ou
| 4988658987095 | SLPS-01524 | 1998-8-6
|
| Okuman Chouja Game: Nottori Daisakusen!
| 4904880138692 | | 2001-11-30
|
| Okusama wa Oneechan!?
| 4560100334079 | | 2004-12-10
|
| Olivia's Mystery
| 4994964112083 | SHVC-ZY | 1994-2-10
|
| Olympia Takasa Virtua Pachi-Slot III
| 4933766922094 | SLPS-01386 | 1998-5-21
|
| Olympia Takasa Virtua Pachi-Slot III (Reprint)
| 4933766200017 | SLPS-02931 | 2000-9-14
|
| Olympia Yamasa Virtua Pachi-Slot II: Jissen! Bishoujo Kouryaku Hou
| 4933766921066 | SLPS-00714 | 1997-4-18
|
| Olympia Yamasa Virtua Pachi-Slot II: Jissen! Bishoujo Kouryaku Hou (Reprint)
| 4933766923053 | SLPS-02932 | 2000-9-14
|
| Olympic Gold: Barcelona '92
| 743175790160 | T-79016 | 1992-0-0
|
| Olympic Hockey Nagano '98
| 031719197132 | | 1998-2-23
|
| Olympic Hockey Nagano 98
| 4988602462357 | NUS-NHNJ-JPN | 1998-7-16
|
| Olympic IQ
| | TC-015 | 1991-0-0
|
| Olympic Soccer
| 4953507961076 | SLPS-00523 | 1996-11-8
|
| Olympic Soccer
| 037988830473 | | 1996-4-12
|
| Olympic Soccer
| 743175952711 | | 1996-6-18
|
| Olympic Soccer
| 743175952797 | | 1996-5-0
|