| Region | Title | System | Version | Edition | Languages | Serial | Status |
|---|
 | Overlord II | XBOX360 | | Beta |      | CM-2058 |  |
| Overlord | XBOX360 | | Beta | | CM-2005 | |
| Overlord | XBOX360 | | Beta | | CM-2005 | |
| OutRun 2 | CHIHIRO | 2.000 | Original |  | GDX-0004A | |
| The Orange Box (Disc 2) | PC | | Original, EA Classics |      | VAE07705811D2/ENG, VAE07707118D2/ENG, VAX07705811D2, VAX07705811D2/AUS | ![2 and more dumps from original media [!]](/images/status/green.png "2 and more dumps from original media [!]") |
| The Orange Box
오렌지 박스 | XBOX360 | | Original | | EA-2063 | |
 | Oxford Handbook of Clinical Medicine for PDAs: Seventh Edition | PALM | 10.0.05/2007.9.7 | | | | |
| Oregano
Oregano: RISC OS Web Browser | ARCH | | Original | | | |
| Order Up! | WII | | Original | | RVL-ROXP-UKV | |
| The Operational Art of War II | PC | 1.01.02 | Xplosiv | | EI-1259-3 | |
| Oil of Ulay: Colour Collection: Colour Consultant | CDI | | Original | | | |
| Oh Yes... More Worms! Volume 1 | ACD | | Original | | | |
| Offroad Extreme! | WII | | Original | | RVL-ROFP-UKV-1 | |
| Official Xbox Starter Pack 2004 | XBOX | | Original | | IM-001 | |
| Official UK PlayStation Best Games Ever! | PSX | | | | SCED-03408 | |
| Official PlayStation 2 Magazine-UK: Crime Special
ops2m crime special | PS2 | 1.01 | | | SCED-51444 | |
| Official PlayStation 2 Magazine-UK Special Edition 20: It's Here!
ops2m special edition 20/demo | PS2 | 1.01 | | | SCED-52196 | |
| Official PlayStation 2 Magazine-UK Special Edition 16: Buyers Guide
ops2m special edition 16 | PS2 | 1.01 | | | SCED-51545 | |
| Official PlayStation 2 Magazine-UK Special Edition 15: Summer Blockbusters!
ops2m special edition 15 | PS2 | 1.00 | | | SCED-51544 | |
| Official PlayStation 2 Magazine-UK Special Edition 13: Girls! Motors! Guns! War! Monsters!
ops2m special edition 13 | PS2 | 1.00 | | | SCED-51542 | |
| Official PlayStation 2 Magazine-UK Special Edition 12: PlayStation 2 Blockbusters!
ops2m special edition 12 | PS2 | 1.01 | | | SCED-51541 | |
| Official PlayStation 2 Magazine-UK Special Edition 11: The World's Best PS2 Games Ever
ops2m special edition 11 | PS2 | 1.02 | | | SCED-51505 | |
| Official PlayStation 2 Magazine-UK Greatest Hits Volume 9: Special Edition: Buyers Guide
playstation 2 greatest hits volume 9 | PS2 | 1.00 | | | SCED-51280 | |
| Official PlayStation 2 Magazine-UK Greatest Hits Volume 8: Special Edition: Racing Games
playstation 2 greatest hits volume 8 | PS2 | 1.10 | | | SCED-50786 | |
| Official PlayStation 2 Magazine-UK Greatest Hits Volume 7: Special Edition: Sports Games
playstation 2 greatest hits volume 7 | PS2 | 1.00 | | | SCED-50785 | |
| Official PlayStation 2 Magazine-UK Greatest Hits Volume 6: Special Edition: Awards 2002
playstation2 greatest hits volume 6 | PS2 | 1.00 | | | SCED-50783 | |
| Official PlayStation 2 Magazine-UK Greatest Hits Volume 5: Special Edition: Action Heroes
playstation2 greatest hits volume 5 | PS2 | 1.00 | | | SCED-50784 | |
| Official PlayStation 2 Magazine-UK Greatest Hits Volume 4: Special Edition: Yearbook 2001
playstation2 greatest hits: vol 4 | PS2 | 1.00 | | | SCED-50164 | |
| Official PlayStation 2 Magazine-UK Greatest Hits Volume 3: Special Edition: Players Guide
playstation2 greatest hits: vol 3 | PS2 | 1.00 | | | SCED-50163 | |
| Official PlayStation 2 Magazine-UK Greatest Hits Volume 2: Special Edition: A-Z of PS2
best ps2 games ever 2 demo | PS2 | 1.00 | | | SCED-50162 | |
| Official PlayStation 2 Magazine-UK Greatest Hits Volume 1: Special Edition: Buyers Guide
playstation2 greatest hits: vol 1 | PS2 | 1.00 | | | SCED-50161 | |
 | Overlord II | XBOX360 | | Original | | CM-2057 | |
| Overlord | XBOX360 | | Original | | CM-2005 | |
| Over G Fighters | XBOX360 | | Original | | TI-2001 | |
| OutRun 2006: Coast 2 Coast | XBOX | | Original | | SE-136 | |
| The Orange Box (Disc 1) | PC | | Original, EA Classics | | 985207, VAE07705811D, VAE07705811D/ENG, VAE07707118D/ENG, VAX07705811D/AUS | |
| The Operative: No One Lives Forever (Disc 2) | PC | 1.004 | Game of the Year Edition, Game of the Year Edition (BestSeller Series), Game of the Year Edition (Covermount) | | JCPL11, S0026179, S0026696 | |
| Operation Flashpoint: Red River | XBOX360 | | Original | | CM-2104 | |
| Operation Flashpoint: Gold Upgrade | PC | 1.30 | Original, Gold Edition | | MOFUCDEU00, MOFUCDUS00 | |
| Operation Flashpoint: Elite | XBOX | | Original | | CM-090 | |
| Operation Flashpoint: Dragon Rising | XBOX360 | | Original | | CM-2065 | |
| Onechanbara: Bikini Samurai Squad | XBOX360 | | Original | | DP-2026 | |
| Omerta: City of Gangsters | XBOX360 | | Original | | KY-2021 | |
| Off-World Interceptor | 3DO | | Original | | | |
 | Over 1000 Games: The Complete Encyclopedia of Games (Disc 2) | PC | | Original | | | |
| Over 1000 Games: The Complete Encyclopedia of Games (Disc 1) | PC | | Original | | | |
| Original Xbox Game Support: December 2005 (1.2)
Prise en charge des jeux Xbox d'origine: Décembre 2005 (1.2) | XBOX360 | | Original | | | |
| Ori and the Blind Forest: Definitive Edition | PC | 5.3.2.9582331 | Limited Edition | | | |
| The Official Guide to The Daedalus Encounter: Companion Disc | PC | | Original | | | |
 | Overwatch | PC | | Origins Edition |  | | |
 | Ozzie's World | PC | | Original | | | |
| Oz: The Magical Adventure | PC | 7.0.0.198 | Rerelease | | 92785 | |
| Oz: The Magical Adventure | PC | | Original | | | |
| Overwatch | PC | | Game of the Year Edition, Legendary Edition | | 73052010US, S7302210 | |
| Overlord: Raising Hell | PS3 | 01.00 | Original | | BLUS-30143 | |
| Overlord: Dark Legend | WII | | Original | | RVL-ROAE-USA | |
| Overlord II | PC | 1.0 | Original | | MOVL2CDUS00 | |
| Overlord II | PS3 | 01.01 | Original | | BLUS-30317 | |
| Overlord II | PC | | Preview Code |   | | |
| Overlord | PC | 1.0 | Original | | MOVL1CDFC00 | |
| OverBlood | PSX | | Original | | SLUS-00464 | |
| Outwars (Disc 2) | PC | 1.0 | Original | | 0298 Part No. X03-57509 | |
| Outwars (Disc 1) | PC | 1.0 | Original | | 0298 Part No. X03-63527 | |
| Outtrigger | DC | 1.003 | Original | | 51102 | |
| OutRun 2006: Coast 2 Coast (Disc 2) | PC | | Original | | | |
| OutRun 2006: Coast 2 Coast (Disc 1) | PC | | Original | | | |
| OutRun 2006: Coast 2 Coast | PSP | 1.03 | Original | | ULUS-10064 | |
| OutRun 2006: Coast 2 Coast | PS2 | 1.01 | Original | | SLUS 21274 | |
| OutRun 2 | XBOX | | Original | | SE-054 | |
| Outlaw Volleyball: Red Hot | XBOX | | Original | | SS-003 | |
| Outlaw Volleyball Remixed | PS2 | 1.02 | Original | | SLUS 21049 | |
| Outlaw Golf: 9 More Holes of X-Mas | XBOX | | Original | | SS-006 | |
| Outlast: A Reading for Information Game | PC | | Original | | HH824 | |
| Outdoor Action Double Pack
Outdoor Action Double Pack: Remington Great American Bird Hunt and Shimano Xtreme Fishing | WII | | Original | | RVL-SFHE-USA-B0 | |
| Outcry (Disc 2)
Outcry: The Dawn | PC | Version DPV 1.0 | Original | | PCO596CD | |
| Outcry (Disc 1)
Outcry: The Dawn | PC | Version DPV 1.0 | Original | | PCO596CD | |
| Outburst | PC | | Classic Value Series | | Product# 99043 | |
| Out of This World | 3DO | RE | 3DO Maniac Pack | | | |
| Out of This World | PC | | Valueware | | CD-ICD-142-0 | |
| Out of This World | 3DO | | Original | | | |
| Out of This World | PC | | Rerelease | | CD-MMC-023-0 | |
| Our House: Party! | WII | | Original | | RVL-SHPE-USA-B0 | |
| Our House featuring The Family Circus | VIS | | Original | | 25-6146 | |
| Otogi 2: Immortal Warriors | XBOX | | Original | | FS-004 | |
| OSHA MHE Forklifts
OSHA MHE Forklifts: PFS Interactive Training | CDI | | Original | | | |
| Oscar Wilde's The Selfish Giant | PC | 2.10 | Original | | MQ 13-004-144 | |
| Orphen: Scion of Sorcery | PS2 | 1.00 | Original | | SLUS-20011 | |
| Orly's Draw-A-Story | PC | | Original | | | |
| The Orion Conspiracy | PC | 1.01 | Original | | | |
| Original Xbox Game Support: August 2006 (1.5) | XBOX360 | | | | | |
| The Original Mulan
花木兰 | PC | | Original | | | |
| The Original Links | PC | | Solid Gold Edition | | | |
| The Oregon Trail: Classic Edition | PC | 3.0.1 | SoftKey | | POT144CE-CD | |
| The Oregon Trail: Classic Edition | PC | | SoftKey | | POT144BE-CD | |
| The Oregon Trail: Classic Edition | PC | | SoftKey | | POT144EE-CD | |
| The Oregon Trail | PC | 3.0.1 | Slash | | CDRM1239790 | |
| The Oregon Trail | PC | 1.22 | Smart Saver | | ORT844AE-CD | |
| The Oregon Trail | PC | 1.21 | | | | |
| The Oregon Trail | PC | 1.2 | Original | | #HCD706 | |
| The Oregon Trail | PC | 1.2 | Original | | #HCD706 | |
| The Oregon Trail | PC | 1.1 | Original | | #HCD606 | |
| The Oregon Trail | PC | 1.0 | Original | | | |
| The Oregon Trail | WII | | 40th Anniversary Edition | | RVL-SORE-USA-B0 | |
| Oregon Trail II: 25th Anniversary Limited Edition | PC | 1.3 | Original, SoftKey | | #OTR744AE-CD | |
| Oregon Trail II + Logic Quest | PC | 1.2/1.0 | Original | | | |
| Oregon Trail II | PC | 1.32 | Rerelease | | #HCD744CE-CD | |
| Oregon Trail II | PC | 1.31 | Rerelease | | #HCD744AE-CD | |
| Oregon Trail II | PC | 1.31 | Rerelease | | HCD744BE-CD | |
| Oregon Trail II | PC | 1.3 | Smart Saver | | 0TT744AE-CD | |
| Oregon Trail II | PC | 1.3 | Smart Saver | | 381032-CD/i401ha | |
| Oregon Trail II | PC | 1.0 | Original | | | |
| The Oregon Trail 5th Edition: Adventures Along the Oregon Trail | PC | 1.1 | Rerelease, Southwestern School Set | | 380859B-CD | |
| The Oregon Trail 5th Edition: Adventures Along the Oregon Trail | PC | 1.01E | Enhanced Education Version | | 480599-CD | |
| The Oregon Trail 5th Edition: Adventures Along the Oregon Trail | PC | 1.0 | Original | | 380859-CD | |
| The Oregon Trail 5th Edition: Adventures Along the Oregon Trail | PC | 1.0 | Scholastic | | 380859-CD WP2 | |
| The Oregon Trail 5th Edition: Adventures Along the Oregon Trail | PC | 1.0 | Original | | 380859A-CD | |
| The Oregon Trail 4th Edition (Disc 3) | PC | 1.1 | Rerelease | | OTF744BE-CD3 | |
| The Oregon Trail 4th Edition (Disc 3) | PC | 1 | Original | | OTF744AE-CD3 | |
| The Oregon Trail 4th Edition (Disc 2) | PC | 1.1 | Rerelease | | OTF744BE-CD2 | |
| The Oregon Trail 4th Edition (Disc 2) | PC | 1 | Rerelease | | OTF744CE-CD2 | |
| The Oregon Trail 4th Edition (Disc 2) | PC | 1 | Original | | OTF744AE-CD2 | |
| The Oregon Trail 4th Edition (Disc 1) | PC | 1.1 | Rerelease | | OTF744BE-CD1 | |
| The Oregon Trail 4th Edition (Disc 1) | PC | 1 | Original | | OTF744AE-CD1 | |
| The Oregon Trail 3rd Edition: Pioneer Adventures (Disc 3) | PC | 1.3 | The Learning Company | | OAE744BE-CD3 | |
| The Oregon Trail 3rd Edition: Pioneer Adventures (Disc 3) | PC | 1.2 | Original | | OTA744BE-CD3 | |
| The Oregon Trail 3rd Edition: Pioneer Adventures (Disc 3) | PC | | Original | | OTA744AE-CD3 | |
| The Oregon Trail 3rd Edition: Pioneer Adventures (Disc 3) | PC | | Original | | OTA744AE-CD3 | |
| The Oregon Trail 3rd Edition: Pioneer Adventures (Disc 2) | PC | 1.3 | The Learning Company | | OAE744BE-CD2 | |
| The Oregon Trail 3rd Edition: Pioneer Adventures (Disc 2) | PC | 1.2 | Original | | OTA744BE-CD2 | |
| The Oregon Trail 3rd Edition: Pioneer Adventures (Disc 2) | PC | | Original | | OTA744AE-CD2 | |
| The Oregon Trail 3rd Edition: Pioneer Adventures (Disc 1) | PC | 1.3 | The Learning Company | | OAE744BE-CD1 | |
| The Oregon Trail 3rd Edition: Pioneer Adventures (Disc 1) | PC | 1.2a | Bundle Version Compaq Presario OEM | | | |
| The Oregon Trail 3rd Edition: Pioneer Adventures (Disc 1) | PC | 1.2 | Original | | OTA744CE-CD1 | |
| The Oregon Trail 3rd Edition: Pioneer Adventures (Disc 1) | PC | 1.2 | Rerelease | | OTA744BE-CD1 | |
| The Oregon Trail 3rd Edition: Pioneer Adventures (Disc 1) | PC | 1.0 | Original | | OTA744AE-CD1 | |
| The Oregon Trail 3rd Edition: Pioneer Adventures | PC | 1.0 | DVD-ROM | | ORG811AE-DVD | |
| Order Up!! | PS3 | 01.02 | Original | | BLUS-30904 | |
| Order Up! | WII | Rev 1 | Original | | RVL-ROXE-USA | |
| Order Up! | WII | | Original | | RVL-ROXE-USA | |
| Order Up! | WII | | Beta | | | |
| Orbatak | 3DO | | Arcade CD-ROM | | | |
| The Orange Box (Disc 2) | PC | | Original | | 985217 | |
| The Orange Box | PS3 | 01.00 | Original | | BLUS-30055 | |
| Optimum Resource Sampler | PC | | Rerelease | | | |
| Optimum Resource Sampler | PC | | Original | | | |
| OptImage CD-I Starter System: Sampler Disc: Version 1.1 | CDI | | | | | |
| Opoona | WII | | Original | | RVL-RPOE-USA | |
| The Operative: No One Lives Forever (Disc 2) | PC | 1.0 | Original | | | |
| The Operative: No One Lives Forever (Disc 2) (In the Lounge with No One Lives Forever) | PC | | Bundle Version Micro-Star International OEM |  | CD-W581995-MSYZ2 | |
| The Operative: No One Lives Forever (Disc 1) (Game Disc) | MAC | 1.004 | MacPlay | | | |
| The Operative: No One Lives Forever (Disc 1) | PC | 1.004 | Game of the Year Edition | | | |
| The Operative: No One Lives Forever (Disc 1) | PC | 1.0 | Original | | | |
| The Operative: No One Lives Forever (Disc 1) | PC | | Bundle Version Micro-Star International OEM | | CD-W581995-MSYZ1, FXX08903223D1 | |
| The Operative: No One Lives Forever | PS2 | 1.50 | Original | | SLUS 20028 | |
| The Operational Art of War: Century of Warfare | PC | | Original | | | |
| Operation Omega | PC | | Original | | 7-20286-92175-1 | |
| Operation Neptune + Reader Rabbit 2 Deluxe! + Ultimate Writing & Creativity Center
The Learning Company 3-in-1 | PC | | | | | |
| Operation Neptune | PC | 1.23 | The ClueFinders: Math Ages 9-12 | | ONT744EE-CD | |
| Operation Neptune | PC | 1.22 | Original | | ONT744CE-CD | |
| Operation Flashpoint: Resistance | PC | 1.75 | Original | | MOFRCDUS00 | |
| Operation Flashpoint: Red River | PS3 | 01.01 | Original | | BLUS-30704 | |
| Operation Flashpoint: Red River | PC | | Original | | MOFP3CDUS00 | |
| Operation Flashpoint: Gold Upgrade | PC | 1.30 | Original | | MOFUCDUS00 | |
| Operation Flashpoint: Dragon Rising | PS3 | 01.01 | Original | | BLUS-30316 | |
| Operation Flashpoint: Cold War Crisis | PC | 1.0 | Original | | MOPFCDUS00 | |
| Operation Flashpoint: Cold War Crisis | PC | | Playable Demo | | POPFCDUS40 | |
| Operation Europe: Path to Victory 1939-45 | PC | | Original | | | |
| Operation Darkness | XBOX360 | | Original | | AT-2002 | |
| Operation Body Count: One Level Preview | PC | | Original | | | |
| Operation Body Count | PC | | Original | | | |
| Operation | PC | | General Mills | | AM801R5 | |
| Operation | PC | | General Mills | | AM0703R71 | |
| Open Season | WII | | Original | | RVL-ROPE-USA | |
| Oops! Prank Party | WII | Rev 1 | Original | | RVL-SPIE-USA-B0 | |
| Oops! Prank Party | WII | | Demo | | RVL-DPIE-USA-B0 | |
| OnSide Soccer | 3DO | | Unlicensed (oldergames, Good Deal Games Double Header! Two Game Set) | | | |
| Online Start-Up Disc v3.5: Broadband Only | PS2 | 1.00 | Original | | PBPX 95247 | |
| Online Start-Up Disc v3.5: Broadband Only | PS2 | 1.00 | Original | | PBPX-95246 | |
| Online Start-Up Disc v3.0 | PS2 | 1.02 | Original | | PBPX-95239 | |
| Online Start-Up Disc v3.0 | PS2 | 1.01 | | | PBPX-95242 | |
| Online Start-Up Disc v3.0 | PS2 | 1.01 | | | SCUS 97425 | |
| Online Start-Up Disc 4.0: Broadband Only | PS2 | 1.02 | Bundled with PS2 | | PBPX 95248 … | |
| Online Start-Up Disc 4.0 | PS2 | 1.00 | | | SCUS-97357 | |
| Online Connection CD: For the PlayStation Game Console | PSX | | Beta Trial Version 1.0 | | LSP-150500 … | |
| Onimusha: Warlords | PS2 | 1.00 | Original, Greatest Hits | | SLUS-20018 … | |
| Onimusha: Dawn of Dreams (Disc 2) | PS2 | 1.02 | Original | | SLUS-21362 | |
| Onimusha: Dawn of Dreams (Disc 1) | PS2 | 1.02 | Original | | SLUS-21180 | |
| Onimusha: Blade Warriors | PS2 | 1.01 | Original | | SLUS-20710 | |
| Onimusha 2: Samurai's Destiny | PS2 | 1.03 | Original | | SLUS-20393 | |
| OnHand Sports Games / Sega Swirl Lite | PALM | PDA105-01 | OnHand Double Pack (Sports Games/Astrologer) | | PDA105-01 | |
| OnHand Complete Astrologer
OnHand Complete Astrologer: Horoscopes & More! | PALM | PDA108-01 | OnHand Double Pack (Sports Games/Astrologer) | | PDA108-01 | |
| OnHand Chess / Sega Swirl Lite | PALM | PDA103-01 | Original | | PDA103-01 | |
| Onechanbara: Bikini Zombie Slayers | WII | | Original | | RVL-RONE-USA | |
| One Piece: Unlimited World Red | PS3 | 01.00 | Day One Edition | | BLUS-31427 … | |
| One Must Fall: Battlegrounds | PC | 2090 | Original | | | |
| Once Upon a Time | WII | Rev 1 | Original | | RVL-SUTE-USA-B0 | |
| Ominous Horizons
Ominous Horizons: A Paladin's Calling | PC | 1.0 | Original | | | |
| Omikron: The Nomad Soul (Disc 3) | PC | 1.0 | Original | | | |
| Omikron: The Nomad Soul (Disc 2) | PC | 1.0 | Original | | | |
| Omikron: The Nomad Soul (Disc 1) | PC | 1.0 | Original | | | |
| Omikron: The Nomad Soul | DC | 1.001 | Original | | T-36807N | |
| The Omega Stone: Riddle of the Sphinx II (Disc 4) | PC | 1.2.3.2 | Original | | | |
| The Omega Stone: Riddle of the Sphinx II (Disc 3) | PC | 1.2.3.2 | Original | | | |
| The Omega Stone: Riddle of the Sphinx II (Disc 2) | PC | 1.2.3.2 | Original | | | |
| The Omega Stone: Riddle of the Sphinx II (Disc 1) | PC | 1.2.3.2 | Original | | | |
| Omar Sharif on Bridge | PC | | Valueware | | CD-ICD-148-0 | |
| Olympic Summer Games | PSX | | Original | | SLUS-00148 | |
| Olympic Summer Games | 3DO | | Original | | FZ-SW0012 | |
| Olympic Soccer | SS | 2.000 | Original | | T-7904H | |
| Olympic Soccer | 3DO | | Original | | FZ-SW0011 | |
| Olympic Soccer | PSX | | Original | | SLUS-00156 | |
| Old El Paso Recipes for Family Fun | PC | | Original | | | |
| Ōkami | WII | | Original | | RVL-ROWE-USA | |
| Ohio Distinctive Software Vol. I | PC | | | | | |
| Ogre Battle: Limited Edition | PSX | | Original | | SLUS-00467 | |
| Offshore Tycoon | WII | | Original | | RVL-RXFE-USA | |
| Offroad Extreme! Special Edition | WII | | Original | | RVL-ROFE-USA-B0 | |
| Official Sega Dreamcast Magazine: Special Edition Preview PC CD-ROM | PC | | | | | |
| Official Sega Dreamcast Magazine Vol. 9: December 2000 | DC | 1.000 | | | IGN9 | |
| Official Sega Dreamcast Magazine Vol. 8: November 2000 | DC | 1.020 | | | IGN8 | |
| Official Sega Dreamcast Magazine Vol. 7: September 2000 | DC | 1.020 | | | IGN7 | |
| Official Sega Dreamcast Magazine Vol. 6: July 2000 | DC | 1.050 | | | IGN6 | |
| Official Sega Dreamcast Magazine Vol. 5: May 2000 | DC | 1.010 | | | | |
| Official Sega Dreamcast Magazine Vol. 4: March 2000 | DC | 1.020 | | | IGN3 | |
| Official Sega Dreamcast Magazine Vol. 3: January 2000 | DC | 1.010 | | | IGN2 | |
| Official Sega Dreamcast Magazine Vol. 2: November 1999 | DC | 1.020 | | | IGN1 | |
| Official Sega Dreamcast Magazine Vol. 11: February 2001 | DC | 0.500 | | | | |
| Official Sega Dreamcast Magazine Vol. 10: January 2001 | DC | 1.200 | | | IGN10 | |
| Official Lara Croft: Real Life '99 Lara: Character Images | PC | | Press Kit | | | |
| The Official Guide to Babylon 5
The Official Guide to J. Michael Straczynski's Babylon 5 | PC | | Original | | | |
| The Official Browser of Primagames.com | PC | | | | | |
| Off-World Interceptor Extreme | SS | 1.000 | Original | | T-15908H | |
| Off-World Interceptor Extreme | PSX | | Original | | SLUS-00020 | |
| Off-Road Redneck Racing | PC | | Original | | CD-C98-1259-0 | |
| Of Light and Darkness: The Prophecy (Disc 3) | PC | | Original | | CD-C95-166-2 | |
| Of Light and Darkness: The Prophecy (Disc 2) | PC | | Original | | CD-C95-166-1 | |
| Of Light and Darkness: The Prophecy (Disc 1) | PC | | Original | | CD-C95-166-0 | |
| Odyssey: The Search for Ulysses (Disc 2) | PC | | Original | | | |
| Odyssey: The Search for Ulysses (Disc 1) | PC | | Original | | | |
| ODS Robot Challenge | PC | 5.0.1r26 | Teacher's Edition | | | |
| ODS Robot Challenge | PC | | Original | | | |
| ODS Carnival Math | PC | 5.0r134 | Teacher's Edition | | | |
| ODS Carnival Math | PC | 5.0r134 | Teacher's Edition | | | |
| ODS Amazing Art Corner | PC | 5.0r134 | Teacher's Edition | | | |
| ODS Air Explorer | PC | 5.0r134 | Teacher's Edition | | | |
| ODS Air Explorer | PC | 5.0r134 | Teacher's Edition | | | |
| Odin Sphere: Leifthrasir | PS3 | 01.01 | Original | | BLUS-31601 | |
| Odin Sphere | PS2 | 1.00 | Trade Demo | | SLUS-28065 | |
| Odin Sphere | PS2 | 1.00 | Original, Greatest Hits | | SLUS 21577 … | |
| Odell Down Under | PC | | Original, SoftKey | | POD544AE-CD | |
| Oddworld: Stranger's Wrath HD | PS3 | 01.00 | Original | | BLUS-31620 | |
| Oddworld: Stranger's Wrath | XBOX | | Original | | EA-109 | |
| Oddworld: Munch's Oddysee | XBOX | | Platinum Hits | | MS-001 | |
| Oddworld: Abe's Origins | PC | | Limited Run Games | | | |
| Oddworld: Abe's Oddysee: New 'n' Tasty! | PS3 | 01.00 | Limited Edition | | BLUS-31621 | |
| Oddworld: Abe's Oddysee | PSX | Rev 2 | Greatest Hits | | SLUS-00190 | |
| Oddworld: Abe's Oddysee | PSX | Rev 1 | Original, Greatest Hits | | SLUS-00190 | |
| Oddworld: Abe's Oddysee | PC | 2.0 | Original | | 04-12608CD | |
| Oddworld: Abe's Oddysee | PC | 2.0 | Channelware | | 04-15303 | |
| Oddworld: Abe's Oddysee | PSX | | Trade Demo | | | |
| Oddworld: Abe's Oddysee | PSX | | Original | | SLUS-00190 | |
| Oddworld: Abe's Oddysee | PSX | | Demo | | SLUS-90004 | |
| Oddworld: Abe's Exoddus (Disc 2) | PSX | | Original | | SLUS-00731 … | |
| Oddworld: Abe's Exoddus (Disc 1) | PSX | | Original | | SLUS-00710 … | |
| Oddworld: Abe's Exoddus (Install) | PC | 2.0 | Original | | 04-15993CD1 | |
| Oddworld: Abe's Exoddus (Play) | PC | | Original | | 04-15993CD2 | |
| Octomania | WII | | Original | | RVL-RTKE-USA | |
| Oceans Below | PC | | Bundle Version OEM | | RVL 13-004-059 Rev. A / 2198610-590002 / I 083100 | |
| Oceans Below
The Software Toolworks Presents ... Oceans Below | MAC | | Original | | 2198620-590001 / I 073100, CDRM1103420 | |
| Ocean Commander | WII | | Original | | RVL-RQME-USA | |
| Obscure: The Aftermath
ObsCure: The Aftermath | PSP | 1.00 | Original, Test Sample | | ULUS-10484 | |
| Obscure: The Aftermath
ObsCure: The Aftermath | PS2 | 1.00 | Original | | SLUS-21709 | |
| Obscure: The Aftermath
ObsCure: The Aftermath | WII | | Original | | RVL-ROBE-USA | |
| Obscure: The Aftermath
ObsCure: The Aftermath | WII | | Beta | | | |
| Obscure (Disc 5)
ObsCure | PC | 1.0 | Original | | PCO457CD | |
| Obscure (Disc 4)
ObsCure | PC | 1.0 | Original | | PCO457CD | |
| Obscure (Disc 3)
ObsCure | PC | 1.0 | Original | | PCO457CD | |
| Obscure (Disc 2)
ObsCure | PC | 1.0 | Original | | PCO457CD | |
| Obscure (Disc 1)
ObsCure | PC | 1.0 | Original | | PCO457CD | |
| Obscure
ObsCure | PS2 | 1.00 | Original | | SLUS 20777 | |
| Obscure
ObsCure | XBOX | | Original | | MI-009 | |
| O.R.B: Off-World Resource Base | PC | 1.0 | Original | | 22434CD | |
 | Oscar the Balloonist: Discovers the Farm
小小探險家奧斯卡 農場奇遇記 | PC | | Original | | | |
| The Orange Box (Disc 2)
戰慄時空2：二部曲重裝旗艦版 | PC | | Original | | TTE0193 | |
| The Orange Box (Disc 1)
戰慄時空2：二部曲重裝旗艦版 | PC | | Original | | TTE0193 | |
 | Oyunlarla Dil Bilgisi Oyunlarla Matematik | PC | | Original |  | | |
| Oyungezer: Mart 2010 | PC | | | | | |
| Oynayarak Ogreniyorum 1
Oynayarak Öğreniyorum 1 | PC | | Original | | | |
| Operation Thunderstorm | PC | 1.0 | Original | | | |
 | Operation Neptun | PC | 1.2 | Original | | ONT844AW-CD | |
| Onsalakorv | PC | | Original | | | |
| Ollo in the Sunny Valley Fair | PC | | Original |    | | |
| Olivers Äventyr: Drakens Förbannelse | PC | | Original | | 021120110 | |
 | Official PlayStation 2 Magazine Demo 81
ops2m demo 81 spa/por | PS2 | 1.00 | | | SCED-54603 | |
| Official PlayStation 2 Magazine Demo 80
ops2m demo 80 spa/por | PS2 | 1.00 | | | SCED-54567 | |
| Official PlayStation 2 Magazine Demo 58
ops2m demo 58: spa/por | PS2 | 1.00 | | | SCED-53348 | |
 | Oro y Gloria: La Ruta hacia El Dorado | PSX | | Original | | SLES-03187 | |
| Oddworld: Munch's Oddysee | XBOX | | Original | | MS-001 | |
| Oddworld: Abe's Oddysee | PSX | | Original | | SLES-00841 | |
| Oddworld: Abe's Exoddus (Disc 2) | PSX | | Original | | SLES-11505 | |
| Oddworld: Abe's Exoddus (Disc 1) | PSX | | Original | | SLES-01505 | |
 | Odlikas za Prvake
Одликаш за Прваке | PC | | Original |  | | |
 | Overlord: Raising Hell | PC | 1.3 | Original | | | |
| Overlord II | PC | | Original | | | |
| Overlord | PC | 1.2 | Original | | | |
| Otverzhennye: Tajna temnoj rasy (Disc 2)
Отверженные: Тайна темной расы | PC | | 1C: Igrushki | | SNOW OT21 0110 IR | |
| Otverzhennye: Tajna temnoj rasy (Disc 1)
Отверженные: Тайна темной расы | PC | | 1C: Igrushki | | SNOW OT21 0110 IR | |
| Otorva v shkole
Оторва в школе | PC | | Original | | | |
| Ot zakata do rassveta
От заката до рассвета | PC | | 1C: Igroteka | | | |
| Ostrov Nanda
Остров Нанда | PC | 1.000 | Original | | | |
| Ostrov e'rotiki
Остров эротики | PC | | Original | | | |
| Osobennosti nacional'nogo razvoda (Disc 2)
Особенности национального развода | PC | | Original | | | |
| Osobennosti nacional'nogo razvoda (Disc 1)
Особенности национального развода | PC | | Original | | | |
| Orly Pervoj mirovoj
Орлы Первой мировой | PC | 02.19.07 | Original | | | |
| Order of War: Stolknovenie
Order of War: Столкновение | PC | | Igromaniya: Vybor redakcii | | | |
| Order of War: Osvobozhdenie
Order of War: Освобождение | PC | | Igromaniya: Vybor redakcii | | | |
| Orda: Severnyj veter
Орда: Северный ветер | PC | | Original | | | |
| The Orange Box (Disc 2) | PC | | Original |  | | |
| The Orange Box (Disc 2) | PC | | Rerelease |  | | |
| The Orange Box (Disc 2) | PC | | Rerelease | | | |
| The Orange Box (Disc 1) | PC | | Original | | | |
| The Orange Box (Disc 1) | PC | | Rerelease | | | |
| The Orange Box (Disc 1) | PC | | Rerelease | | | |
| Operation Flashpoint: Soprotivlenie
Operation Flashpoint: Сопротивление | PC | 1.85 | | | | |
| Operation Flashpoint: Holodnaja vojna
Операция Flashpoint: Холодная война | PC | 1.46 | Original | | | |
| Operaciya Silent Storm: Chasovye (Disc 2)
Операция Silent Storm: Часовые | PC | | 1С: Igroteka | | | |
| Operaciya Silent Storm: Chasovye (Disc 1)
Операция Silent Storm: Часовые | PC | | 1С: Igroteka | | | |
| Operaciya Silent Storm (Disc 2)
Операция Silent Storm | PC | Aug 11 2003 | 1C: Igroteka | | | |
| Operaciya Silent Storm (Disc 1)
Операция Silent Storm | PC | Aug 11 2003 | 1C: Igroteka | | | |
| Operaciya Bagration
Операция Багратион | PC | | Original | | | |
| Operaciya "X" ili novye piklyucheniya Shuricha (Disc 1)
Операция "Х" или новые приключения Шурича | PC | | 1C: Kollekciya igrushek | | | |
| Operaciya "Plastilin" (Disc 2)
Операция "Пластилин" | PC | | Original | | | |
| Operaciya "Plastilin" (Disc 1)
Операция "Пластилин" | PC | | Original | | | |
| Operaciya "Blau"
Операция "Блау" | PC | | Original | | | |
| Operaciya "Barbarossa"
Операция "Барбаросса" | PC | | Original | | | |
| Onimusha: Put' samuraya (Disc 4)
Onimusha: Путь самурая | PC | | Original | | | |
| Onimusha: Put' samuraya (Disc 3)
Onimusha: Путь самурая | PC | | Original | | | |
| Onimusha: Put' samuraya (Disc 2)
Onimusha: Путь самурая | PC | | Original | | | |
| Onimusha: Put' samuraya (Disc 1) (Igrovoj)
Onimusha: Путь самурая | PC | | Original | | | |
| Onimusha: Put' samuraja
Onimusha: Путь самурая | PC | | Original | | | |
| Ona: Sbornik e'roticheskix igr
Она: Сборник эротических игр | PC | | Original | | 10-20999 | |
| On-Robot
Он-Робот | PC | 1.14SB | 1C: Igrushki | | | |
| Oficery: Special'noe izdanie
Офицеры: Специальное издание | PC | 1.18.2 | Original | | | |
| Obscure II
ObsCure II | PC | 1.0.0.0 | Original | | | |
| Obscure (Disc 4)
ObsCure | PC | | Original | | | |
| Obscure (Disc 3)
ObsCure | PC | | Original | | | |
| Obscure (Disc 2)
ObsCure | PC | | Original | | | |
| Obscure (Disc 1)
ObsCure | PC | | Original | | | |
| Obscure
ObsCure | PS2 | 1.01 | Original | | SLES-53322 | |
| Obratnyj otschet
Обратный отсчет | PC | v.1 1.06.10.22 | Original | | | |
| Oblachno, vozmozhny osadki v vide frikadelek
Облачно, возможны осадки в виде фрикаделек | PSP | 1.00 | Original | | ULES-01361 | |
| Obitel' t'my: Sumerki
Обитель тьмы: Сумерки | PC | 1.1 | Original | | | |
| Obitaemyj ostrov: Zemlyanin
Обитаемый остров: Землянин | PC | | Original | | | |
| Obitaemyj ostrov: Chuzhoj sredi chuzhix
Обитаемый остров: Чужой среди чужих | PC | | Original | | | |
| Obitaemyj ostrov
Обитаемый остров | PC | | Original | | | |
| Ob"ekt 69: Mest' Krassera
Объект 69: Месть Крассера | PC | | Original | | | |
| Ob"ekt 69: Kasablanka
Объект 69: Касабланка | PC | | Original | | RUSSOBIT-M 2003/408 | |
| O.R.B.: Orbital'nye Resursnye Bazy
О.Р.Б.: Орбитальные Ресурсные Базы | PC | 1.03 | 1C: Kollekciya igrushek | | | |
 | Overlord
BGamer 153 (Side A) | PC | | Covermount | | | |
| OutRun 2006: Coast 2 Coast | PC | | Top Games | | SEGA-PC029 | |
 | Overlord | PC | 1.2 | Original | | MOVL1CDPL00 (DVD), POVL1CDPL03 (Box) | |
| OutRun 2006: Coast 2 Coast | PC | | eXtra Klasyka XK HIT | | TS OCC PL | |
| Ortofrajda | PC | | | | | |
| Opowieści z Narnii: Lew, Czarownica i Stara Szafa (Disc 4) | PC | | Original | | | |
| Opowieści z Narnii: Lew, Czarownica i Stara Szafa (Disc 3) | PC | | Original | | | |
| Opowieści z Narnii: Lew, Czarownica i Stara Szafa (Disc 2) | PC | | Original | | | |
| Opowieści z Narnii: Lew, Czarownica i Stara Szafa (Disc 1) | PC | | Original | | | |
| Opowieści z Narnii: Lew, Czarownica i Stara Szafa | PS2 | 1.00 | Original | | SLES-53713 | |
| Opowieści z Narnii: Książe Kaspian | PC | | Covermount | | | |
| Oksfordzka Encyklopedia Historii Świata. Tom II | PC | | Covermount | | SELL 0108 | |
| Oksfordzka Encyklopedia Historii Świata | PC | | Covermount | | SELL 0103 | |
| Ognisty Podmuch: Fire Captain (Disc 2) (Dysk z Grą) | PC | | Covermount | | | |
| Ognisty Podmuch: Fire Captain (Disc 1) (Dysk Instalacyjny) | PC | | Covermount | | | |
| Obrońca | PC | | FajnaGra.pl | | | |
| O! Rety! Psoty Dudusia Wesołka | PC | | Playada Gier | | P_20265_03A_PL | |
 | De Overval: Over Dwangmiddelen en Getuigenverhoor | CDI | | Original | | ovrvl 01 | |
| Operation Flashpoint: Cold War Crisis | PC | | The Games Collection | | | |
| Open Universiteit: Practicum Toxicologische Histopathologie
Open University: Practical Toxicological Histopathology | CDI | | Original | | 4589 | |
| Op Jacht naar Vernuft | CDI | | | | | |
| De Ontdekker en het Mysterie van de Diamanten Scarabee
The Explorer and the Mystery of the Diamond Scarab | WII | | Original | | RVL-SODP-EUR-B0 | |
| Ontdek het Onbekende Nederland | CDI | 1.06 | Original | | 814 0104 | |
| Ontdek de Interactieve Wereld van Neckermann | CDI | | Original | | | |
| Omgaan met Steriele Medische Hulpmiddelen
Omgaan met Steriele Medische Hulp-Middelen | CDI | | Original | | | |
| Omgaan met Steriele Medische Hulpmiddelen | CDI | | Demo | | | |
| Official PlayStation 2 Magazine Demo 101
ops2m demo 101 eur | PS2 | 1.00 | | | SCED-55120 | |
| Oddworld: Abe's Exoddus (Installatie Disk) | PC | 2.0 | Budget | | MMICDR 5280 | |
 | Online Start-Up Disc v1.0
Disco de Inicio en Línea v1.0 | PS2 | 1.00 | Original | | PBPX 95250 … | |
 | OutRun 2006: Coast 2 Coast | PSP | 1.00 | Original | | ULKS 46087 | |
| Operation Flashpoint: Dragon Rising
오퍼레이션 플래시포인트: 드래곤 라이징 | PS3 | 01.01 | Original | | BLKS 20157 | |
| Onimusha: Warlords | PS2 | 1.00 | Original | | SLPM 67507 | |
| One Piece: Round the Land!
원피스 라운드 더 랜드! | PS2 | 1.00 | Original | | SLKA 25208 | |
| One Piece: Pirates Carnival
원피즈 해적카니발 | PS2 | 1.01 | Original | | SLKA 25351 | |
| One Piece: Grand Battle! Rush
원피스 그랜드배틀! RUSH | PS2 | 1.00 | Original | | SLKA 25299 | |
| One Piece: Grand Adventure
원피스: 그랜드 배틀 어드벤처 | PS2 | 1.00 | Original | | SLKA 25388 | |
| Off-World Interceptor
혹성질주 | 3DO | | Original | | GDT-GA241 | |
| Odin Sphere
오딘 스피어 | PS2 | 1.00 | Sample | | SCKA 20107 | |
 | One Piece: Romance Dawn: Bouken no Yoake
ワンピース ＲＯＭＡＮＣＥ ＤＡＷＮ 冒険の夜明け | PSP | 1.01 | Original | | ULJS 00550 … | |
 | Ozzie's World
オジィーズワールド | PC | | Original | | ASOW-71110 | |
| Ozaki Yutaka: Eyes: "Hakushi no Sanran" Yori
尾崎 豊 ｅｙｅｓ「白紙の散乱」より | PHOTO-CD | | | | CAT.908753-7 | |
| Oz no Mahoutsukai: Another World: Rung Rung
オズの魔法使い ～Ａｎｏｔｈｅｒ Ｗｏｒｌｄ～ ルングルング | PSX | | Original | | SLPS 02335 | |
| Oyako Entertainment Series: TV Kamishibai Vol. 1
親子エンタテインメントシリーズ ～てれび紙芝居Ｖｏｌ．１～ | PSX | | Original | | SLPM 86393 | |
| Oyako de Asobo: Miffy no Omochabako
おやこ で あそぼ ミッフィーの おもちゃばこ | WII | | Original | | RVL-R3UJ-JPN-B0 | |
| Oyaji no Jikan: Nee-chan Tsuri Iku de!
おやじの時間 ね～ちゃん釣り行くで！ | PSX | | Original | | SLPS 02590 | |
| Oyaji Hunter Mahjong
おやじハンター・マージャン | 3DO | | Original, Sample | | IMP-SF0703 | |
| OverTop
オーバートップ | NGCD | | Original | | ADCD-011 | |
| OverBlood 2: The "East Edge" File
オーバーブラッド２ －Ｔｈｅ ＂Ｅａｓｔ Ｅｄｇｅ＂ Ｆｉｌｅ－ | PSX | | Premium Disc | | SLPM 80270 | |
| OverBlood 2 (Disc 2)
オーバーブラッド２ | PSX | | Original | | SLPS 01262 | |
| OverBlood 2 (Disc 1)
オーバーブラッド２ | PSX | | Original | | SLPS 01261 | |
| OverBlood 2
オーバーブラッド２ | PSX | | Special Movie-ban | | PAPX 90046 … | |
| OverBlood
オーバーブラッド | PSX | | Original, PlayStation the Best | | SLPS 00392 … | |
| OverBlood
オーバーブラッド | PSX | | Major Wave | | SLPM 86641 | |
| Over the Monochrome Rainbow featuring Shogo Hamada | PS2 | 1.40 | Original | | SLPM 65271 | |
| Over G: Energy Airforce | XBOX360 | | Original | | TI-2001 | |
| Over Drivin' IV
オーバードライビンⅣ | PSX | | Taikenban Disc | | SLPM 80437 | |
| Over Drivin' IV
オーバードライビンⅣ | PSX | | Original | | SLPS 02099 | |
| Over Drivin' III: Hot Pursuit
オーバードライビンⅢ | PSX | | Original | | SLPS 01593 | |
| Over Drivin' III: Hot Pursuit
オーバードライビンⅢ | PSX | | Taikenban Disc | | SLPM 80298 | |
| Over Drivin' II
オーバードライビンⅡ | PSX | | Original | | SLPS 00895 | |
| Over Drivin' DX: Rally Edition
オーバードライビンＤＸ ラリーエディション | PSX | | Hibaihin | | SLPM 80032 | |
| Over Drivin' DX
オーバードライビンＤＸ | PSX | | Original | | SLPS 00327 | |
| Outtrigger
アウトトリガー | DC | 1.008 | Original | | HDR-0118 | |
| OutRun 2 SP
アウトラン２ スペシャルツアーズ | PS2 | 1.03 | Shokai Genteiban | | SLPM 66628 | |
| OutRun 2
アウトラン２ | XBOX | | Shokai Genteiban | | SE-054 | |
| Outer World
アウター・ワールド | 3DO | | Original | | FZ-SJ3451 | |
| Outdoor Wander Land
アウトドアワンダーランド | MAC | | Original | | ILL-940715 | |
| Out Live: Be Eliminate Yesterday
アウトライブ Ｂｅ Ｅｌｉｍｉｎａｔｅ Ｙｅｓｔｅｒｄａｙ | PSX | | Original | | SLPS 00746 | |
| Ousama Monogatari
王様物語 | WII | | Original | | RVL-RO3J-JPN-B0 | |
| Ousama Monogatari
王様物語 | WII | | Beta | | | |
| Ouran Koukou Host Club
桜蘭高校ホスト部 | PS2 | 1.01 | Genteiban | | SLPM 66737 | |
| Ouran Koukou Host Club
桜蘭高校ホスト部 | PS2 | 1.01 | Original | | SLPM 66738 | |
| Our Graduation: Mahjong de Pon! Hanafuda de Koi! (Disc 2) (Hanafuda de Koi!)
アワー グラデュエーション ～麻雀でポン 花札でコイ～ | PSX | | Original | | SLPS 02577 | |
| Our Graduation: Mahjong de Pon! Hanafuda de Koi! (Disc 1) (Mahjong de Pon!)
アワー グラデュエーション ～麻雀でポン 花札でコイ～ | PSX | | Original | | SLPS 02576 | |
| Oukoku no Grand Chef
王国のグランシェフ | 3DO | | Original | | FZ-SJ4252 | |
| Ouka: Kokoro Kagayakaseru Sakura
桜華 ～心輝かせる桜～ | PS2 | 1.01 | Original | | SLPM 66406 | |
| Ougon no Kizuna
黄金の絆 | WII | | Original | | RVL-RK7J-JPN | |
| Ougon Musou Kyoku Cross
黄金夢想曲 ＣＲＯＳＳ | PC | 2.00 | Original | | | |
| Ougon Kishi Garo
黄金騎士 牙狼 | PS2 | 1.01 | Genteiban | | SLPS 20462 | |
| Ougon Kishi Garo
黄金騎士 牙狼 | PS2 | 1.01 | Original | | SLPS 20463 | |
| Otousan no Tame no Tsuri: Fly Fishing-hen
お父さんのための釣り フライ フィッシング編 | PC | | Original | | TFF-058-1 | |
| Otousan no Tame no Hanafuda Tenkomori
お父さんのための花札 てんこもり | PC | | Original | | THT-063 | |
| Otomedius Gorgeous!
オトメディウス ゴージャス! | XBOX360 | | Original | | KN-2030 | |
| Otome-teki Koi Kakumei: Love Revo!!
乙女的恋革命★ラブレボ！！ | PS2 | 1.03 | Original, Love Revo Box | | SLPM 66238 … | |
| Otome-teki Koi Kakumei: Love Revo!!
乙女的恋革命★ラブレボ！！ | PS2 | 1.03 | Love Revo Box | | SLPM 66237 | |
| Otome wa Oanesama Boku ni Koi Shiteru Portable
乙女はお姉さまに恋してる Ｐｏｒｔａｂｌｅ | PSP | 1.02 | Original | | ULJM 05647 | |
| Otome wa Boku ni Koishiteru
乙女はお姉さまに恋してる | PS2 | 1.05 | Original | | SLPM 66165 | |
| Otome Koigokoro Prister
乙女恋心プリスター体験版 | PC | | Taikenban | | | |
| Otogi Story: Tenshi no Shippo
おとぎストーリー ～天使のしっぽ～ | PSX | | Original | | SLPS 03531 | |
| Oto to E no Deru Eigo Jisho No. 4: Nandemo Illust Eigo Jiten Part 2
音と絵の出る英語辞書 Ｎｏ．４ 「なんでもいらすとえいごじてん Ｐａｒｔ ２」 | FMT | | Original | | HMB-170 | |
| Oto to E no Deru Eigo Jisho No. 3: Nandemo Illust Eigo Jiten
音と絵の出る英語辞書 Ｎｏ．３ 「なんでもいらすとえいごじてん」 | FMT | | Original | | HMB-131 | |
| Oto to E no Deru Eigo Jisho No. 2: English in Dream
音と絵の出る英語辞書 Ｎｏ．２ 「Ｅｎｇｌｉｓｈ ｉｎ Ｄｒｅａｍ」 | FMT | | Original | | HMB-129 | |
| Oto to E no Deru Eigo Jisho No. 1: Start with Words
音と絵の出る英語辞書 Ｎｏ．１ 「Ｓｔａｒｔ ｗｉｔｈ Ｗｏｒｄｓ」 | FMT | | Original, Rerelease | | HMA-217 | |
| Other Life Azure Dreams
アザーライフ アザードリームス | PSX | | Original | | SLPM 86047 | |
| Othello World II: Yume to Michi e no Chousen
オセロワールドＩＩ 夢と未知への挑戦 | PSX | | Original, Fukkokuban | | SLPS 00136 … | |
| Othelanian Wars
オセラニアン・ウォーズ | PC | | Original | | | |
| Otenki Kororin
お天気ころりん | PSX | | Original | | SLPM 87047 | |
| Osouji Sentai Clean Keeper H
お掃除戦隊 くりーんきーぱーはいぱーＨ | PS2 | 1.01 | Original | | SLPM 55220 | |
| Osouji Sentai Clean Keeper
お掃除戦隊くりーんきーぱー | WII | | Original | | RVL-RC5J-JPN | |
| Oshidashi Zintrick ~ ZinTricK
押し出しジントリック | NGCD | | Original | | ADCD-104 | |
| Oshare Cooking II
おしゃれクッキングⅡ | FMT | Rev B | Original | | HMA-267B | |
| Oshare Cooking
おしゃれクッキング | FMT | Rev A | Original | | HMA-267A | |
| Osaka Naniwa Matenrou
大阪ナニワ摩天楼 | PSX | | Original | | SLPS 02013 | |
| Original War (Disc 2) (GameDisc)
オリジナル ウォー | PC | 1.02 | Original | | | |
| Original War (Disc 1) (Install Disc)
オリジナル ウォー | PC | 1.02 | Original | | | |
| Orgazumi (Disc 2)
オーガズミー | PC | | Original | | FCG014 | |
| Orgazumi (Disc 1)
オーガズミー | PC | | Original | | FCG013 | |
| Orgaslave (Side-1)
オルガスレイブ | PC | | Original | | H PT 003-1 | |
| Orgaslave (Side-2)
オルガスレイブ | PC | | Original | | H PT 003-2 | |
| Oretachi no Sabage Portable
俺たちのサバゲー ＰＯＲＴＡＢＬＥ | PSP | 1.03 | Original | | ULJS 00170 | |
| Oretachi ni Tsubasa wa Nai
俺たちに翼はない | PS3 | 01.01 | Original | | BLJM 61018 | |
| Oretachi Geesen Zoku: Yie Ar Kung Fu
オレたちゲーセン族 イー・アル・カンフー | PS2 | 1.01 | Original | | SLPM 62696 | |
| Oretachi Geesen Zoku: Trio the Punch
オレたちゲーセン族 トリオ・ザ・パンチ | PS2 | 1.02 | Original | | SLPM 62745 | |
| Oretachi Geesen Zoku: Time Pilot
オレたちゲーセン族 タイムパイロット | PS2 | 1.01 | Original | | SLPM 62644 | |
| Oretachi Geesen Zoku: Thunder Cross
オレたちゲーセン族 サンダークロス | PS2 | 1.02 | Original | | SLPM 62744 | |
| Oretachi Geesen Zoku: Terra Cresta
オレたちゲーセン族 テラクレスタ | PS2 | 1.04 | Original | | SLPM 62661 | |
| Oretachi Geesen Zoku: Super Volleyball
オレたちゲーセン族 スーパーバレーボール | PS2 | 1.04 | Original | | SLPM 62660 | |
| Oretachi Geesen Zoku: Sonic Wings
オレたちゲーセン族 ～ソニックウィングス～ | PS2 | 1.01 | Original | | SLPM 62646 | |
| Oretachi Geesen Zoku: Scramble
オレたちゲーセン族 スクランブル | PS2 | 1.01 | Original | | SLPM 62626 | |
| Oretachi Geesen Zoku: Rabio Lepus
オレたちゲーセン族 ラビオ レプス | PS2 | 1.00 | Original | | SLPM 62707 | |
| Oretachi Geesen Zoku: Quarth
オレたちゲーセン族 クォース | PS2 | 1.02 | Original | | SLPM 62704 | |
| Oretachi Geesen Zoku: Pooyan
オレたちゲーセン族 プーヤン | PS2 | 1.01 | Original | | SLPM 62731 | |
| Oretachi Geesen Zoku: Nekketsu Koukou Dodgeball-bu
オレたちゲーセン族 熱血高校ドッジボール部 | PS2 | 1.00 | Original | | SLPM 62705 | |
| Oretachi Geesen Zoku: Nekketsu Kouha Kunio-kun
オレたちゲーセン族 熱血硬派くにおくん | PS2 | 1.01 | Original | | SLPM 62706 | |
| Oretachi Geesen Zoku: Moon Cresta
オレたちゲーセン族 ムーンクレスタ | PS2 | 1.01 | Original | | SLPM 62645 | |
| Oretachi Geesen Zoku: Karate-dou
オレたちゲーセン族 空手道 | PS2 | 1.01 | Original | | SLPM 62628 | |
| Oretachi Geesen Zoku: Crazy Climber
オレたちゲーセン族 クレイジー・クライマー | PS2 | 1.01 | Original | | SLPM 62627 | |
| Oretachi Geesen Zoku: Contra
オレたちゲーセン族 魂斗羅 | PS2 | 1.00 | Original | | SLPM 62730 | |
| Oretachi Geesen Zoku: Burger Time
オレたちゲーセン族 バーガータイム | PS2 | 1.00 | Original | | SLPM 62695 | |
| Oretachi Geesen Zoku: Akumajou Dracula
オレたちゲーセン族 悪魔城ドラキュラ | PS2 | 1.01 | Original | | SLPM 62729 | |
| Ore! Tomba
オレっ！トンバ | PSX | | Taikenban | | SLPM 80165 | |
| Ore! Tomba
オレっ！トンバ | PSX | | Original | | SLPS 01144 | |
| Ore no Yotto: Ganbare! Nippon Challenge
俺のヨット ～がんばれ！ ニッポン・チャレンジ～ | PSX | | Original | | SLPS 02132 | |
| Ore no Yome: Anata dake no Hanayome
俺の嫁 ～あなただけの花嫁～ | XBOX360 | | Original | | IF-2008 | |
| Ore no Shita de Agake
俺の下であがけ | PC | System3.9 Ver.5.43 | Original | | ALB-005 | |
| Ore no Shita de Agake
俺の下で ＡＧＡＫＥ | PS2 | 1.01 | Original | | SLPS 25796 | |
| Ore no Shikabane o Koete Yuke
俺の屍を越えてゆけ | PSP | 1.01 | Original, Fukkatsu Kinen Genteiban | | UCJS 10116 … | |
| Ore no Shikabane o Koete Yuke
俺の屍を越えてゆけ | PSX | | Original, PlayStation the Best, PSone Books, PSone Books (Silver Disc) | | SCPS 10074 … | |
| Ore no Shikabane o Koete Yuke
俺の屍を越えてゆけ | PSX | | Tentou-you Movie Disc | | PCPX 96160 | |
| Ore no Ryouri
俺の料理 | PSX | | Original, PlayStation the Best | | SCPS 10099 … | |
| Ore no Ryouri
俺の料理 | PSX | | Taikenban | | PAPX 90089 | |
| Ore no Imouto Maker EX: Imouto to Koishiyo Portable
俺の妹めいかあＥＸ いもうとと恋しよっ ぽ～たぶる | PSP | 1.01 | Limited Edition | | ULJS 00357 | |
