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• Oekaki Puzzle: Superlite 1500 Series - NSTC-J (5mb) [Puzzle, Strategy & Simulation]
• Oasis Road - (NTSC-J) (125MB) [RPG]
• Ochan No Oekaki Logic - (NTSC-J) (183MB) [Puzzle, Strategy & Simulation]
• Oda Nobunaga Den - (NTSC -J) (41MB) [RPG]
• Oddworld - Abe's Oddysee - (NTSC-U) (453MB) [Platformers]
• Oddworld - Abe's Oddysée PAL (472MB) [Platformers]
• Oddworld 2 - Abe's Exoddus - (NTSC-U) (748MB) [Platformers]
• Oddworld 2 - Abe's Exoddus - (PAL) (???MB) [Platformers]
• Odo Odo Oddity NTSC-J (273MB) [Action-Adventure]
• ODT - Escape or Die Trying (NTSC-U) (381MB) [Adventure]
• Official Playstation Magazine Euro Demo 42 (With Net Yaroze Games) - (SCED-01152) - (PAL) (264MB) [Miscellaneous]
• Official Polish PlayStation Magazine Autumn/Christmas Releases [SCED-00273] (PAL) (161MB) [Miscellaneous]
• Off-World Interceptor Extreme (NTSC-U)(457MB) [Racing]
• Off-World Interceptor Extreme - (PAL)[E] (464MB) [Sports & Racing]
• Ogre Battle (Limited Edition) - The March Of The Black Queen - (NTSC-U) (???MB) [RPG]
• Oh! Bakyuuun - (NTSC-J) (163MB) [Shooters]
• Oh No! NTSC-J [SLPS-02764] (206Mb) [Action-Adventure]
• Ojamajyo Doremi Dokkan! Nijiro Paradise [J] [SLPS-03497] (241MB) [Miscellaneous]
• Ojyousama Express NSTC-J (SLPS-01495~96) (688MB) [Puzzle, Strategy & Simulation]
• Olympia Yamasa - Virtua Pachi-Slot II (Reprint) [NTSC/J] [SLPS-00714] (247mb) [Puzzle, Strategy & Simulation]
• Olympic Games [SLES-00110] (PAL/Multi-5) (296MB) [Sports]
• Olympic Soccer (NTSC-U) (339MB) [Sports & Racing]
• Olympic Summer Games - (NTSC-U) (305MB) [Sports & Racing]
• Omega Assault Pal SLES 04051 (???MB) [Shooters]
• Omega Boost - (NTSC-U) (???MB) [Shooters]
• Omega Boost - NTSC-JP (312MB) [Shooters]
• Omega Boost - PAL (Multi5) (325Mb) [Shooters]
• Omise de Tensyu [J] [SLPS-01876] (694MB) [RPG]
• One - (NTSC-U) (???MB) [Action-Adventure]
• One [NTSC-J] [SLPS-01812] (???MB) [Action-Adventure]
• ONE (PAL MULTI-4) (128 MB) [Action-Adventure]
• One Piece - Grand Battle - (PAL)[Multi-5] (309MB) [Fighters]
• One Piece - Grand Battle - (NTSC-J) (???MB) [Fighters]
• One Piece - Grand Battle 2 - (NTSC-J) (???MB) [Fighters]
• One Piece - Oceans Of Dreams (From TV Animation) - (NTSC-J) (419MB) [RPG]
• One Piece : Tobidase Kaizokudan NTSC-J [SLPS-03252] (389MB) [RPG]
• One Piece Mansion - (NTSC-U) (???MB) [Puzzle, Strategy & Simulation]
• One Piece - Mansion [NTSC-J] [SLPM-86837](???MB) [Puzzle, Strategy & Simulation]
• One Two Smash - Tanoshii Tennis NTSC-J (21MB) [Sports]
• Ongaku Tsukuru - Kanade-Ru 2 [Miscellaneous]
• Ongaku Tsukuru 3 (NTSC-J) (4MB) [Miscellaneous]
• Oni Zero - Fukkatsu (Pandora Max Series - Vol.6) - (NTSC-J) (245MB) [RPG] * 1 MERGED MIRROR
• Option Tuning Car Battle - [SLPS-01207] (355MB) NTSC-J [Racing]
• Option Tuning Car Battle 2 NTSC-JP[SLPS-01857] [Sports & Racing]
• Option Tuning Car Battle - Spec R - (NTSC-J) (254MB) [Sports & Racing]
• Option Tuning Car Battle Spec-S - [SLPS-02587] (260MB) NTSC-J [Racing]
• Ore No Ryori NTSC-J (529MB) [Miscellaneous]
• Ore No Shikabane Wo Koeteyuke - (NTSC-J) (404MB) [RPG]
• Ore no Yacht - Ganbare Nippon Challenge - (NTSC-J) (83.6MB) [Racing]
• Ore! Tomba [NTSC-J] [SLPS-01144] (???MB) [Platformers]
• Osaka - [NTSC-J] [SLPS-01722-3] [2CD] （337 +443MB） [Puzzle, Strategy & Simulation]
• Oshigotoshiki Jinsei Game [NTSC-J] [SLPS-03056](???MB) [Miscellaneous]
• Oujisama LV1 [NTSC-J] [SLPS-03412] (319MB) [RPG]
• Oukyuu no Hihou Tension [NTSC-J] (165MB) [RPG]
• Oumagatoki (Dangerous Dusk) [SLPS-03235] [NTSC-J] (310 Mb) [Adventure]
• Oumagatoki 2 - (NTSC-J) (247MB) [Adventure]
• Out Live - Be Eliminate Yesterday - NTSC - JP [SLPS-00746] (254MB) [RPG]
• Over Drivin' II - [SLPS-00895] (NTSC-J) (339MB) [Racing]
• Over Drivin' III - Hot Pursuit - [SLPS-01593] (NTSC-J) (402MB) [Racing]
• Over Drivin' IV - [SLPS-02099] (NTSC-J) (585MB) [Racing]
• Over Drivin' Skyline Memorial [NTSC-J] [SLPS-01024] (208MB) [Racing]
• Overblood - (NTSC-U) (303MB) [Action-Adventure]
• Overblood 2 - (PAL) (716MB) [Action-Adventure]
• Overblood 2 - (NTSC-J) (???MB) [Action-Adventure]
• Overboard - (PAL) (???MB) [Action-Adventure]