| Region | Title | System | Version | Edition | Languages | Serial | Status |
|---|
 | Original Xbox Game Support: December 2005 (1.2)
Prise en charge des jeux Xbox d'origine: Décembre 2005 (1.2) | XBOX360 | | Original | | |  |
 | The Orion Conspiracy | PC | 1.01 | Original |  | | |
| Orly's Draw-A-Story | PC | | Original | | | |
 | Oro Negro: Juego de Guerra y Estrategia | PC | | Covermount |   | | |
| Orphen: Scion of Sorcery | PS2 | 1.00 | Original | | SLUS-20011 | ![2 and more dumps from original media [!]](/images/status/green.png "2 and more dumps from original media [!]") |
| Oscar Wilde's The Selfish Giant | PC | 2.10 | Original | | MQ 13-004-144 | |
| OSHA MHE Forklifts
OSHA MHE Forklifts: PFS Interactive Training | CDI | | Original | | | |
| Othello | PC | | Original |  | 99011 | |
| Otogi 2: Immortal Warriors | XBOX | | Original | | FS-004 | |
| Otogi: Myth of Demons | XBOX | | Original | | FS-002 | |
| Otomedius Excellent | XBOX360 | | Original | | KN-2106 | |
| Our House featuring The Family Circus | VIS | | Original | | 25-6146 | |
| Our House: Party! | WII | | Original | | RVL-SHPE-USA-B0 | |
| Our Solar System | PHOTO-CD | | | | #CD-1 | |
 | Ouro e Glória: O Caminho para El Dorado | PC | | Original |  | 906.02.0 | |
| 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 | |
| Out of This World | 3DO | RE | 3DO Maniac Pack | | | |
| Outburst | PC | | Classic Value Series | | Product# 99043 | |
| Outcast (Disc 1) | PC | | Original | | 42831-9110TC | |
| Outcast (Disc 2) | PC | | Original | | 42831-9110TC | |
| Outcry (Disc 1)
Outcry: The Dawn | PC | Version DPV 1.0 | Original | | PCO596CD | |
| Outcry (Disc 2)
Outcry: The Dawn | PC | Version DPV 1.0 | Original | | PCO596CD | |
| Outdoor Action Double Pack
Outdoor Action Double Pack: Remington Great American Bird Hunt and Shimano Xtreme Fishing | WII | | Original | | RVL-SFHE-USA-B0 | |
| Outlast: A Reading for Information Game | PC | | Original | | HH824 | |
| Outlaw Golf | XBOX | | Original | | VU-016 | |
| Outlaw Golf | GC | | Original | | DL-DOL-GOFE-USA | |
| Outlaw Golf 2 | XBOX | | Original | | TT-023 | |
| Outlaw Golf 2 | PS2 | 1.02 | Original | | SLUS 21030 | |
| Outlaw Golf: 9 Holes of X-Mas | XBOX | | Original | | VU-027 | |
| Outlaw Golf: 9 More Holes of X-Mas | XBOX | | Original | | SS-006 | |
| Outlaw Golf: Holiday Golf | XBOX | | Original | | SS-005 | |
| Outlaw Tennis | XBOX | | Original | | TT-118 | |
| Outlaw Tennis | PS2 | 1.01 | Original | | SLUS 21190 | |
| Outlaw Volleyball | XBOX | | Original | | SS-003 | |
| Outlaw Volleyball Remixed | PS2 | 1.02 | Original | | SLUS 21049 | |
| Outlaw Volleyball: Red Hot | XBOX | | Original | | SS-003 | |
| Outlaws (Demonstration Program) | PC | Demo 1.0 CD Build 3 | Demo | | 644230 | |
| Outlaws (Disc 1) | PC | 1.0 Build 3 | Original | | 9511830 | |
| Outlaws (Disc 1) | PC | 1.0 Build 3 | Bundle Version Diamond OEM | | 644430 | |
| Outlaws (Disc 1) | PC | 2.0 | Rerelease | | 9511830 | |
| Outlaws (Disc 1) | PC | 2.0 | Rerelease | | 9511830 | |
| Outlaws (Disc 1) | PC | 2.0 | Rerelease | | 9511830 | |
| Outlaws (Disc 2) | PC | 1.0 Build 3 | Original | | 9511831 | |
| Outlaws (Disc 2) | PC | 1.0 Build 3 | Bundle Version Diamond OEM | | 644431 | |
| Outlaws (Disc 2) | PC | 2.0 | Rerelease | | 9511831 | |
| Outlaws (Disc 2) | PC | 2.0 | Rerelease | | 9511831 | |
| Outlaws (Disc 2) | PC | 2.0 | Rerelease | | 9511831 | |
| Outlaws: Cidade Sem Lei (Disc 1) | PC | 2.0 | Original | | 0806.05.0 | |
| Outlaws: Cidade Sem Lei (Disc 2) | PC | 2.0 | Original | | 0806.06.0 | |
| Outlive | PC | 1.01 | Original | | | |
| Outpost | PC | | Original | | S725430 | |
| Outpost | PC | 1.1 | Rerelease | | S725431 | |
| Outpost | PC | 1.5 | Rerelease, Sierra Originals | | | |
| Outpost 2: Divided Destiny | PC | 1.2.0.5 | Original | | | |
| Outpost 2: Divided Destiny | PC | 1.2.0.5 | Original | | | |
| OutRun 2 | XBOX | | Original | | SE-054 | |
| OutRun 2006: Coast 2 Coast | PS2 | 1.01 | Original |  | SLUS 21274 | |
| OutRun 2006: Coast 2 Coast | PSP | 1.03 | Original | | ULUS-10064 | |
| OutRun 2006: Coast 2 Coast (Disc 1) | PC | | Original |  | | |
| OutRun 2006: Coast 2 Coast (Disc 2) | PC | | Original | | | |
| Outtrigger | DC | 1.003 | Original | | 51102 | |
| Outwars (Disc 1) | PC | 1.0 | Original | | 0298 Part No. X03-63527 | |
| Outwars (Disc 2) | PC | 1.0 | Original | | 0298 Part No. X03-57509 | |
| Over 1000 Games: The Complete Encyclopedia of Games (Disc 1) | PC | | Original | | | |
| Over 1000 Games: The Complete Encyclopedia of Games (Disc 2) | PC | | Original | | | |
 | Over 1000 Games: The Complete Encyclopedia of Games: Volume II (Disc 1)
Over 1000 Games Volume 2 | PC | | Original | | | |
| Over 1000 Games: The Complete Encyclopedia of Games: Volume II (Disc 2)
Over 1000 Games Volume 2 | PC | | Original | | | |
| Over 200 Programs for Windows
STG Computers LTD Windows Extra CD-ROM | PC | | Original | | | |
| OverBlood | PSX | | Original | | SLUS-00464 | |
| Overlord | PC | 1.0 | Original | | MOVL1CDFC00 | |
| Overlord II | PC | | Preview Code |     | | |
| Overlord II | PS3 | 01.01 | Original | | BLUS-30317 | |
| Overlord II | PC | 1.0 | Original | | MOVL2CDUS00 | |
| Overlord: Dark Legend | WII | | Original | | RVL-ROAE-USA | |
| Overlord: Raising Hell | PS3 | 01.00 | Original | | BLUS-30143 | |
| Overwatch | PC | | Game of the Year Edition, Legendary Edition | | 73052010US, S7302210 | |
| Owlboy (Game Disc) | PC | 0.0.6152.604 | IndieBox | | | |
| Oz: The Magical Adventure | PC | | Original | | | |
| Oz: The Magical Adventure | PC | 7.0.0.198 | Rerelease | | 92785 | |
| Ozzie's World | PC | | Original | | | |
