| Region | Title | System | Version | Edition | Languages | Serial | Status |
|---|
 | Ocean/Infogrames Show Case December 1997 | PC | | |  | |  |
 | The Official Browser of Primagames.com | PC | | | | | |
 | Official Demo Disc Retail Edition February 02
official demo disc retail edition february 02 | PS2 | 1.02 | |     | SCED-50732 | |
 | Official PlayStation 2 Magazine Demo 32
PlayStation 2 Revista Oficial: Portugal 9 | PS2 | 1.00 | | | SCED-51657 | |
| Official PlayStation 2 Magazine Demo 37
PlayStation 2 Magazine CD 37 Septembre 2003 | PS2 | 1.00 | | | SCED-51563 | |
 | Official PlayStation 2 Magazine Demo 77
ops2m germany 10-2006 | PS2 | 1.00 | | | SCED-54056 | |
 | Official PlayStation 2 Magazine Demo 81
ops2m demo 81 spa/por | PS2 | 1.00 | | | SCED-54603 | |
| Official PlayStation 2 Magazine Demo 82
ops2m germany 02-2007 | PS2 | 1.01 | | | SCED-54642 | |
| Official PlayStation 2 Magazine Demo 83
ops2m germany 2007/03 | PS2 | 1.01 | | | SCED-54692 | |
| Official PlayStation 2 Magazine French Christmas Special Demo
ops2m french christmas special demo | PS2 | 1.00 | | | SCED-53854 | |
 | Official PlayStation 2 Magazine-UK Greatest Hits Volume 1: Special Edition: Buyers Guide
playstation2 greatest hits: vol 1 | PS2 | 1.00 | | | SCED-50161 | |
| 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 5: Special Edition: Action Heroes
playstation2 greatest hits volume 5 | PS2 | 1.00 | | | SCED-50784 | |
| 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 8: Special Edition: Racing Games
playstation 2 greatest hits volume 8 | PS2 | 1.10 | | | SCED-50786 | |
| 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 Special Edition 12: PlayStation 2 Blockbusters!
ops2m special edition 12 | PS2 | 1.01 | | | SCED-51541 | |
| 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 16: Buyers Guide
ops2m special edition 16 | PS2 | 1.01 | | | SCED-51545 | |
| Official PlayStation 2 Magazine-UK Special Edition: Yearbook 2002
Best PS2 Games Ever 10 | PS2 | 1.00 | | | SCED-51389 | |
| Official PlayStation 2 Magazine: Kids Special
OPS2 Ger Kids Special/DEM/GER | PS2 | 1.00 | | | SCED-53611 | |
| Official PlayStation 2 Magazine: Special Edition 2005/01
ops2m ger special 01/2005 | PS2 | 1.02 | | | SCED-53298 | |
| Official PlayStation 2 Magazine: Winter 2006
ops2 ger winter 2006 | PS2 | 1.00 | | | SCED-54558 | |
| Official PlayStation Magazine Issue 27: January 2009 | PS3 | 01.00 | |  | BCED-00426 | |
| Official PlayStation Magazine Issue 35: September 2009 | PS3 | 01.00 | | | BCED-00434 | |
| Official PlayStation Magazine Issue 64: December 2011 | PS3 | 01.01 | | | BCED-01206 | |
| Official PlayStation Magazine Issue 65: Christmas 2011 | PS3 | 01.00 | | | BCED-01207 | |
| Official PlayStation Magazine Issue 76: November 2012 | PS3 | 01.00 | | | BCED-01571 | |
| Official PlayStation Magazine Issue 78: Christmas 2012 | PS3 | 01.00 | | | BCED-01573 | |
| Official PlayStation Magazine Issue 79: January 2013 | PS3 | 01.03 | | | BCED-01574 | |
| Official PlayStation Magazine Issue 81: March 2013 | PS3 | 01.00 | | | BCED-01576 | |
| Official PlayStation Magazine Issue 82: April 2013 | PS3 | 01.00 | | | BCED-01817 | |
| Official Sega Dreamcast Magazine Vol. 10: January 2001 | DC | 1.200 | | | IGN10 | |
| Official Sega Dreamcast Magazine Vol. 11: February 2001 | DC | 0.500 | | | | |
| Official Sega Dreamcast Magazine Vol. 2: November 1999 | DC | 1.020 | | | IGN1 | |
| Official Sega Dreamcast Magazine Vol. 3: January 2000 | DC | 1.010 | | | IGN2 | |
| Official Sega Dreamcast Magazine Vol. 4: March 2000 | DC | 1.020 | | | IGN3 | |
| Official Sega Dreamcast Magazine Vol. 5: May 2000 | DC | 1.010 | | | | |
| Official Sega Dreamcast Magazine Vol. 6: July 2000 | DC | 1.050 | | | IGN6 | |
| Official Sega Dreamcast Magazine Vol. 7: September 2000 | DC | 1.020 | | | IGN7 | |
| Official Sega Dreamcast Magazine Vol. 8: November 2000 | DC | 1.020 | | | IGN8 | |
| Official Sega Dreamcast Magazine Vol. 9: December 2000 | DC | 1.000 | | | IGN9 | |
| Official UK PlayStation Best Games Ever! | PSX | | | | SCED-03408 | |
 | The Official Xbox Magazine: Australia & New Zealand: Issue 100 | XBOX360 | | | | IM-2146 | |
| The Official Xbox Magazine: Australia & New Zealand: Issue 101 | XBOX360 | | | | IM-2147 | |
| The Official Xbox Magazine: Australia & New Zealand: Issue 103 | XBOX360 | | | | IM-2149 | |
| The Official Xbox Magazine: Australia & New Zealand: Issue 104 | XBOX360 | | | | IM-2150 | |
| The Official Xbox Magazine: Australia & New Zealand: Issue 105 | XBOX360 | | | | IM-2151 | |
| The Official Xbox Magazine: Australia & New Zealand: Issue 106 | XBOX360 | | | | IM-2152 | |
| The Official Xbox Magazine: Australia & New Zealand: Issue 107 | XBOX360 | | | | IM-2153 | |
| The Official Xbox Magazine: Australia & New Zealand: Issue 108 | XBOX360 | | | | IM-2154 | |
| The Official Xbox Magazine: Australia & New Zealand: Issue 109 | XBOX360 | | | | IM-2155 | |
| The Official Xbox Magazine: Australia & New Zealand: Issue 110 | XBOX360 | | | | IM-2156 | |
| The Official Xbox Magazine: Australia & New Zealand: Issue 111 | XBOX360 | | | | IM-2157 | |
| The Official Xbox Magazine: Australia & New Zealand: Issue 112 | XBOX360 | | | | IM-2159 | |
 | Oh!PC 1998-nen 10-gatsu-gou Tokubetsu Furoku CD-ROM
Ｏｈ！ＰＣ １９９８年 １０月号 特別付録ＣＤ－ＲＯＭ | PC | | | | OHPC-9810 | |
| Oh!PC 1998-nen 11-gatsu-gou Tokubetsu Furoku CD-ROM
Ｏｈ！ＰＣ １９９８年 １１月号 特別付録ＣＤ－ＲＯＭ | PC | | | | OHPC-9811 | |
| Oh!PC 1998-nen 8-gatsu-gou Tokubetsu Furoku CD-ROM
Ｏｈ！ＰＣ １９９８年 ８月号 特別付録ＣＤ－ＲＯＭ | PC | | | | OHPC-9808 | |
| Oh!PC 1998-nen 9-gatsu-gou Tokubetsu Furoku CD-ROM
Ｏｈ！ＰＣ １９９８年 ９月号 特別付録ＣＤーＲＯＭ | PC | | | | OHPC-9809 | |
| Oh!X 1998 Spring Special CD-ROM (Part 1) | X68K | | | | | |
| Oh!X 1998 Spring Special CD-ROM (Part 2) (Sampler Disc) | X68K | | | | | |
| Oh!X 1999 Spring Special CD-ROM (Part 1) | X68K | | | | | |
| Oh!X 1999 Spring Special CD-ROM (Part 2) (Sampler Disc) | X68K | | | | | |
| Oh!X 1999 Summer Special CD-ROM | X68K | | | | | |
| Oh!X 2000 Spring Special CD-ROM (Part 1) | X68K | | | | | |
| Oh!X 2000 Spring Special CD-ROM (Part 2) | X68K | | | | | |
| Oh!X 2001 Spring Special CD-ROM | X68K | | | | | |
| One-derful Theater
ＯＮＥだふるシアター | X68K | | |  | | |
| Online G@mer n. 5: Juin/Juillet 2001 (Disc 1) | PC | | | | | |
 | Only Fun: Entra anche tu nel mondo dei Videogames | PC | | | | | |
| Oozora ni Kodawarou! Minna no Kuukou 2
大空にこだわろう！ みんなの空港２ | PC | | | | | |
 | Operation Flashpoint: Soprotivlenie
Operation Flashpoint: Сопротивление | PC | 1.85 | |  | | |
| Operation Neptune + Reader Rabbit 2 Deluxe! + Ultimate Writing & Creativity Center
The Learning Company 3-in-1 | PC | | | | | |
| OPSM Best Racing Game Ever | PSX | | | | SCED-02492 | |
| OptImage CD-I Starter System: Sampler Disc: Version 1.1 | CDI | | | | | |
| Orchid Technology Kelvin MPEG Software Catalog | PC | | | | | |
| The Oregon Trail | PC | 1.21 | | | | |
| Original Xbox Game Support: August 2006 (1.5) | XBOX360 | | | | | |
 | Ortofrajda | PC | | | | | |
| Oscar der Ballonfahrer und die Geheimnisse des Waldes | PC | | | | | |
| Our Solar System | PHOTO-CD | | | | #CD-1 | |
| Les Ours Berenstain: Comme des Grands | CDI | 1.05 | | | 812 0063 | |
| Over Load | PC | | | | | |
| Oxford Handbook of Clinical Medicine for PDAs: Seventh Edition | PALM | 10.0.05/2007.9.7 | | | | |
 | Oyungezer: Mart 2010 | PC | | | | | |
| Ozaki Yutaka: Eyes: "Hakushi no Sanran" Yori
尾崎 豊 ｅｙｅｓ「白紙の散乱」より | PHOTO-CD | | | | CAT.908753-7 | |
| Operaciya Silent Storm (Disc 1)
Операция Silent Storm | PC | Aug 11 2003 | 1C: Igroteka | | | |
| Operaciya Silent Storm (Disc 2)
Операция Silent Storm | PC | Aug 11 2003 | 1C: Igroteka | | | |
| Ot zakata do rassveta
От заката до рассвета | PC | | 1C: Igroteka | | | |
| On-Robot
Он-Робот | PC | 1.14SB | 1C: Igrushki | | | |
| Otverzhennye: Tajna temnoj rasy (Disc 2)
Отверженные: Тайна темной расы | PC | | 1C: Igrushki | | SNOW OT21 0110 IR | |
| O.R.B.: Orbital'nye Resursnye Bazy
О.Р.Б.: Орбитальные Ресурсные Базы | PC | 1.03 | 1C: Kollekciya igrushek | | | |
| Operaciya "X" ili novye piklyucheniya Shuricha (Disc 1)
Операция "Х" или новые приключения Шурича | PC | | 1C: Kollekciya igrushek | | | |
| Operaciya Silent Storm: Chasovye (Disc 1)
Операция Silent Storm: Часовые | PC | | 1С: Igroteka | | | |
| Operaciya Silent Storm: Chasovye (Disc 2)
Операция Silent Storm: Часовые | PC | | 1С: Igroteka | | | |
| Omoi no Kakera: Close to
想いのかけら ‐Ｃｌｏｓｅ ｔｏ‐ | PS2 | 1.02 | 2800 Collection | | SLPM 66385 | |
| Orion Burger | PC | | Abenteuer Doppelpack: Premier Collection | | MOBRLPGE72 | |
| Orbatak | 3DO | | Arcade CD-ROM | | | |
| Oddworld: Abe's Exoddus: US Manual | MAC | | Art Assets | | | |
| Obscure
ObsCure | PC | | Best of Atari | | | |
| Obscure: The Aftermath
ObsCure: The Aftermath | WII | | Beta | | | |
| Onimusha 2: Samurai's Destiny
鬼武者２ ＰＡＬ | PS2 | 1.00 | Beta | | SLES-50978 | |
| Order Up! | WII | | Beta | | | |
| Ousama Monogatari
王様物語 | WII | | Beta | | | |
| OutRun 2 | XBOX | | Beta | | | |
 | Overlord | XBOX360 | | Beta | | CM-2005 | |
| Overlord | XBOX360 | | Beta | | CM-2005 | |
| Overlord II | XBOX360 | | Beta | | CM-2058 | |
| Online Connection CD: For the PlayStation Game Console | PSX | | Beta Trial Version 1.0 | | LSP-150500 … | |
 | Oddworld: Abe's Exoddus (Installatie Disk) | PC | 2.0 | Budget | | MMICDR 5280 | |
| The Oregon Trail 3rd Edition: Pioneer Adventures (Disc 1) | PC | 1.2a | Bundle Version Compaq Presario OEM | | | |
| 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 (Disc 2) (In the Lounge with No One Lives Forever) | PC | | Bundle Version Micro-Star International OEM | | CD-W581995-MSYZ2 | |
| Oceans Below | PC | | Bundle Version OEM | | RVL 13-004-059 Rev. A / 2198610-590002 / I 083100 | |
| Okiraku TownsGEAR
お気楽 ＴｏｗｎｓＧＥＡＲ | FMT | | Bundled with Book | | SBHW-00002 | |
| Online Start-Up Disc 4.0: Broadband Only | PS2 | 1.01 | Bundled with PS2 | | PBPX 95248 | |
| Olympic Soccer | PC | | CD-ROM Classic Collection 2 | | | |
 | Ollo en de Reuzentomaat | PC | | CD-ROM Topper |  | | |
| Oddworld: Abe's Oddysee | PC | 2.0 | Channelware | | 04-15303 | |
 | Open Season
Les Rebelles de la Forêt | PC | | Cheese Heads | | | |
| Outburst | PC | | Classic Value Series | | Product# 99043 | |
| O.R.B: Off-World Resource Base | PC | | Covermount | | | |
| Obscure
ObsCure | PC | 1.1 | Covermount | | | |
 | Oddworld: Abe's Exoddus (Disc 1) | PC | 1.0 | Covermount | | | |
| Oddworld: Abe's Exoddus (Disc 2) | PC | 1.0 | Covermount | | | |
| Oddworld: Abe's Oddysee | PC | 2.0 | Covermount | | IB2G-ODDI5 | |
| Offensive
Offensive War: The Ultimate Strategical Combat Game | PC | | Covermount | | | |
| Ognisty Podmuch: Fire Captain (Disc 1) (Dysk Instalacyjny) | PC | | Covermount |  | | |
| Ognisty Podmuch: Fire Captain (Disc 2) (Dysk z Grą) | PC | | Covermount | | | |
| Oksfordzka Encyklopedia Historii Świata. Tom II | PC | | Covermount | | SELL 0108 | |
| Omerta: City of Gangsters | PC | | Covermount | | G1DVD0215 | |
| Omnia Junior 1: Enciclopedia: Dizionario | PC | | Covermount | | SIAE 08A01PA | |
| Omnia Junior 2: Storia: Attività interattive | PC | | Covermount | | SIAE 0901PA | |
| Omnia Junior 3: Il Mondo degli Animali | PC | | Covermount | | SIAE1001PA | |
| Opowieści z Narnii: Książe Kaspian | PC | | Covermount | | | |
| Original War (Disc 1) | PC | 1.02 | Covermount | | | |
| Original War (Disc 2) | PC | 1.02 | Covermount | | | |
| Oro e Gloria: La Strada per El Dorado | PC | | Covermount | | | |
 | Oro Negro: Juego de Guerra y Estrategia | PC | | Covermount | | | |
| Overlord
BGamer 153 (Side A) | PC | | Covermount | | | |
| Obbligato (Taikenban CD-ROM)
オブリガート 体験版CD-ROM | PC | | Demo | | | |
| Omgaan met Steriele Medische Hulpmiddelen | CDI | | Demo | | | |
| Oops! Prank Party | WII | | Demo | | RVL-DPIE-USA-B0 | |
| OPSM Best Ever Ever Games Demo | PSX | | Demo | | SCED-02851 | |
| OutRun 2 | XBOX | | Demo | | SE-057 | |
| Overboard! | PC | | Dice | | DCG 005752, DMM 005776 | |
| The Oregon Trail 3rd Edition: Pioneer Adventures | PC | 1.0 | DVD-ROM | | ORG811AE-DVD | |
| The Oregon Trail 5th Edition: Adventures Along the Oregon Trail | PC | 1.01E | Enhanced Education Version | | 480599-CD | |
| Oil Tycoon 2
Oil Tycoon 2: Il Ritorno di una Leggenda | PC | | EXA Games | | EXAG020 | |
| OIO: The Game: Enlarged | PC | | F*ckn' Best of Independent Games: Collection Vol. 1 | | | |
| Obrońca | PC | | FajnaGra.pl | | | |
| The Operative: No One Lives Forever (Disc 1) | PC | 1.004 | Game of the Year Edition | | S0025036 | |
| The Operative: No One Lives Forever (Disc 2) | PC | 1.004 | Game of the Year Edition | | S0025037 | |
| The Operative: No One Lives Forever (Disc 1) | PC | 1.004 | Game of the Year Edition (Xplosiv) | | EI-1685-1 | |
| The Operative: No One Lives Forever (Disc 2) | PC | 1.004 | Game of the Year Edition (Xplosiv) | | EI-1685-2 | |
| Operation | PC | | General Mills | | | |
| Operation | PC | | General Mills | | AM0703R71 | |
| O.G.A Onigokko Royal: Hunter wa Field de Koi o Suru
Ｏ＊Ｇ＊Ａ 鬼ごっこロワイアル ハンターは孤島（フィールド）で恋をする | PSP | 1.01 | Genteiban | | ULJM 06298 | |
| Ougon Kishi Garo
黄金騎士 牙狼 | PS2 | 1.01 | Genteiban | | SLPS 20462 | |
| Oscar | PC | | Golden Zone | | | |
| OutRun 2006: Coast 2 Coast | PC | | GSP White Label: Reload | | 1673A | |
| Option: Tuning Car Battle
Ｏｐｔｉｏｎ チューニングカーバトル | PSX | | Highlight-ban | | SLPM 80203 | |
| Order of War: Osvobozhdenie
Order of War: Освобождение | PC | | Igromaniya: Vybor redakcii | | | |
| Order of War: Stolknovenie
Order of War: Столкновение | PC | | Igromaniya: Vybor redakcii | | | |
| Operation Flashpoint: Red River | PC | | Kakaku Kaiteihan | | FBG028W000A10 | |
| Off-World Interceptor Extreme
オフワールド・インターセプター エクストリーム | SS | 1.000 | Ketteiban | | T-15901G | |
| Official Demo Disc 1: Retail Edition November 01 | PS2 | 1.04 | Kiosk Demo | | SCED-50615 | |
| Olympic Soccer | PC | | Kixx | | | |
| Oha Suta Produce! Gentei Collabo Game Disc!!
おはスタプロデュース！限定コラボゲームディスク！！ | WII | | Limited Edition | | RVL-DCHJ-JPN | |
| Oddworld: Abe's Origins | PC | | Limited Run Games | | | |
| Otome-teki Koi Kakumei: Love Revo!!
乙女的恋革命★ラブレボ！！ | PS2 | 1.03 | Love Revo Box | | SLPM 66237 | |
| The Operative: No One Lives Forever (Disc 1) (Game Disc) | MAC | 1.004 | MacPlay | | | |
| The Oni Taiji!!: Mezase! Nidaime Momotarou
Ｔｈｅ鬼退治！！ 目指せ！二代目桃太郎 | PSX | | Major Wave | | SLPM 86989 | |
| OverBlood
オーバーブラッド | PSX | | Major Wave | | SLPM 86641 | |
| Ostrich Runner | PC | | Microforum | | | |
| One Piece: Unlimited Cruise: Episode 1: Nami ni Yureru Hihou
ワンピース アンリミテッドクルーズ エピソード1 波に揺れる秘宝 | WII | Rev 1 | Minna no Osusume Selection | | RVL-ROUJ-JPN-B0 | |
| One Piece: Pirates Carnival
ワンピース パイレーツカーニバル | PS2 | 1.01 | Multi Tap (SCPH-10090) Doukonban | | SLPS 25583 | |
| One Piece: Pirates Carnival
ワンピース パイレーツカーニバル | PS2 | 1.01 | Multi Tap (SCPH-70120) Doukonban | | SLPS 25584 | |
| OMSI Add-on: Wien: Der Hochflurbus LU 200 | PC | 1.0 | OMSI Bundle | | | |
| OMSI: Der Omnibussimulator | PC | 1.04 | OMSI Bundle | | | |
| OnHand Complete Astrologer
OnHand Complete Astrologer: Horoscopes & More! | PALM | PDA108-01 | OnHand Double Pack (Sports Games/Astrologer) | | PDA108-01 | |
| OnHand Sports Games / Sega Swirl Lite | PALM | PDA105-01 | OnHand Double Pack (Sports Games/Astrologer) | | PDA105-01 | |
 | O Xephteris Taxideuei stin Ellada
Ο Ξεφτέρης ταξιδεύει στην Ελλάδα | PC | | Original |  | | |
| O-to-i-re: Dreamcast Sequencer
お・と・い・れ ドリームキャストシーケンサー | DC | 1.002 | Original | | T-32801M | |
| O.R.B: Off-World Resource Base | PC | 1.0 | Original | | 22434CD | |
| Oasis Road
オアシスロード | PSX | | Original | | SLPS 01899 | |
| Obaachan no Chiebukuro
おばあちゃんの知恵袋 | FMT | | Original | | HMC-169 | |
| Obitaemyj ostrov
Обитаемый остров | PC | | Original | | | |
| Obitaemyj ostrov: Chuzhoj sredi chuzhix
Обитаемый остров: Чужой среди чужих | PC | | Original | | | |
| Obitaemyj ostrov: Zemlyanin
Обитаемый остров: Землянин | PC | | Original | | | |
| Obitel' t'my: Sumerki
Обитель тьмы: Сумерки | PC | 1.1 | Original | | | |
| Objectif Transparence | CDI | | Original | | RP IND 4 94 | |
| Objectif Transparence | CDI | | Original | | RP IND 4 94 | |
| Oblachno, vozmozhny osadki v vide frikadelek
Облачно, возможны осадки в виде фрикаделек | PSP | 1.00 | Original | | ULES-01361 | |
| Obratnyj otschet
Обратный отсчет | PC | v.1 1.06.10.22 | Original | | | |
 | Obscure (Disc 1)
惊悚空间 | PC | 1.0 | Original |  | | |
| Obscure (Disc 2)
惊悚空间 | PC | 1.0 | Original | | | |
| Obscure (Disc 3)
惊悚空间 | PC | 1.0 | Original | | | |
| Obscure (Disc 4)
惊悚空间 | PC | 1.0 | Original | | | |
| Obscure
ObsCure | XBOX | | Original | | MI-009 | |
| Obscure
ObsCure | PC | | Original | | | |
| Obscure
ObsCure | XBOX | | Original | | MI-009 | |
| Obscure
ObsCure | XBOX | | Original | | MI-009 | |
| Obscure
ObsCure | PC | 1.0 | Original | | 719 02 102 | |
| Obscure
ObsCure | PS2 | 1.00 | Original | | SLES-52737 | |
| Obscure
ObsCure | PS2 | 1.01 | Original | | SLES-52508 | |
| Obscure
ObsCure | PS2 | 1.01 | Original | | SLES-53322 | |
| Obscure (Disc 1)
ObsCure | PC | | Original | | | |
| Obscure (Disc 2)
ObsCure | PC | | Original | | | |
| Obscure (Disc 3)
ObsCure | PC | | Original | | | |
| Obscure (Disc 4)
ObsCure | PC | | Original | | | |
| Obscure (Disc 1)
ObsCure | PC | 1.0 | Original | | PCO457CD | |
| Obscure (Disc 2)
ObsCure | PC | 1.0 | Original | | PCO457CD | |
| Obscure (Disc 3)
ObsCure | PC | 1.0 | Original | | PCO457CD | |
| Obscure (Disc 4)
ObsCure | PC | 1.0 | Original | | PCO457CD | |
| Obscure (Disc 5)
ObsCure | PC | 1.0 | Original | | PCO457CD | |
| Obscure II
ObsCure II | WII | | Original | | RVL-ROBP-EUR | |
| Obscure II
ObsCure II | PC | | Original | | | |
| Obscure: The Aftermath
ObsCure: The Aftermath | WII | | Original | | RVL-ROBE-USA | |
| Obscure: The Aftermath
ObsCure: The Aftermath | PS2 | 1.00 | Original | | SLUS-21709 | |
| Obsidian (Disc 1)
オブシディアン | PC | | Original | | INR-1003 | |
| Obsidian (Disc 1)
オブシディアン | PC | 1.0 | Original | | INR-1003 | |
| Obsidian (Disc 2)
オブシディアン | PC | | Original | | INR-1002 | |
| Obsidian (Disc 2)
オブシディアン | PC | 1.0 | Original | | INR-1003 | |
| Obsidian (Disc 3)
オブシディアン | PC | | Original | | INR-1002 | |
| Obsidian (Disc 3)
オブシディアン | PC | 1.0 | Original | | INR-1003 | |
| Obsidian (Disc 4)
オブシディアン | PC | | Original | | INR-1002 | |
| Obsidian (Disc 4)
オブシディアン | PC | 1.0 | Original | | INR-1003 | |
| Obsidian (Disc 5)
オブシディアン | PC | | Original | | INR-1002 | |
| Obsidian (Disc 5)
オブシディアン | PC | 1.0 | Original | | INR-1003 | |
| Obsidian: Alla Frontiera della Logica (Disc 1) | PC | 1.0.001 | Original | | | |
| Obsidian: Alla Frontiera della Logica (Disc 2) | PC | 1.0.001 | Original | | | |
| Obsidian: Alla Frontiera della Logica (Disc 3) | PC | 1.0.001 | Original | | | |
| Obsidian: Alla Frontiera della Logica (Disc 4) | PC | 1.0.001 | Original | | | |
| Obsidian: Alla Frontiera della Logica (Disc 5) | PC | 1.0.001 | Original | | | |
| Ocean Commander | PS2 | 1.01 | Original | | SLES-55047 | |
| Ocean Commander | WII | | Original | | RVL-RQME-USA | |
| Ochazukenori: Kaiki!! Mushi Danshaku no Yakata
御茶漬海苔 怪奇！！蟲男爵の館 | PC | | Original | | | |
| Octomania | WII | | Original | | RVL-RTKE-USA | |
| Oddworld: Abe's Exoddus (CD Installieren) | PC | 2.0 | Original | | | |
| Oddworld: Abe's Exoddus (CD Abspielen) | PC | 2.0 | Original | | | |
 | Oddworld: Abe's Exoddus (Disc 1) | PSX | | Original | | SLES-01505 | |
| Oddworld: Abe's Exoddus (Disc 2) | PSX | | Original | | SLES-11505 | |
| Oddworld: L'Odyssée d'Abe | PC | | Original | | IB2G-ODDF5 | |
| Oddworld: La Fureur de l'Etranger
Oddworld: Stranger's Wrath | XBOX | | Original | | EA-109 | |
| Oddworld: Munch's Oddysee | XBOX | | Original | | MS-001 | |
| Oddworld: Munch's Oddysee | XBOX | | Original | | MS-001 | |
| Oddworld: Munch's Oddysee | XBOX | | Original | | MS-001 | |
| Oddworld: Strangers Vergeltung | XBOX | | Original | | EA-109 | |
| Odin Sphere: Leifthrasir | PS3 | 01.00 | Original | | BLES-02241 | |
| Odin Sphere: Leifthrasir
オーディンスフィア レイヴスラシル | PS3 | 01.00 | Original | | BLJM 61239 | |
| Odissea: Sulle tracce di Ulisse (Disc 1) | PC | | Original | | ODY-ITA-P01 | |
| Odissea: Sulle tracce di Ulisse (Disc 2) | PC | | Original | | ODY-ITA-P02 | |
 | Odlikas za Prvake
Одликаш за Прваке | PC | | Original |  | | |
| ODN Palm Power Pack | PALM | | Original | | | |
| Odoru Made in Wario
おどる メイド イン ワリオ | WII | | Original | | RVL-RODJ-JPN | |
| ODS Robot Challenge | PC | | Original | | | |
| Odyssee: Auf der Suche nach Odysseus (Disc 1) | PC | | Original | | ODY-GERCD1 | |
| Odyssee: Auf der Suche nach Odysseus (Disc 2) | PC | | Original | | ODY-GERCD2 | |
| Odyssey: The Search for Ulysses (Disc 1) | PC | | Original | | | |
| Odyssey: The Search for Ulysses (Disc 2) | PC | | Original | | | |
 | Oesterreichische Nationalbibliothek: Multimediale Enzyklopaedie auf 3 CD-i's (Disc 1) (Prunksaal/Impressionen) | CDI | | Original | | 0103313 | |
| Oesterreichische Nationalbibliothek: Multimediale Enzyklopaedie auf 3 CD-i's (Disc 2) (Sammlungen) | CDI | | Original | | 0103313 | |
| Oesterreichische Nationalbibliothek: Multimediale Enzyklopaedie auf 3 CD-i's (Disc 3) (Apokalypse) | CDI | | Original | | 0103313 | |
| Of Light and Darkness: The Prophecy (Disc 1) | PC | | Original | | CD-W95-166-E | |
| Of Light and Darkness: The Prophecy (Disc 2) | PC | | Original | | CD-W95-166-E | |
| Of Light and Darkness: The Prophecy (Disc 3) | PC | | Original | | CD-W95-166-E | |
| Of Light and Darkness: The Prophecy (Disc 1) | PC | | Original | | | |
| Of Light and Darkness: The Prophecy (Disc 2) | PC | | Original | | | |
| Of Light and Darkness: The Prophecy (Disc 3) | PC | | Original | | | |
| Of Light and Darkness: The Prophecy (Disc 1) | PC | | Original | | CD-C95-166-0 | |
| Of Light and Darkness: The Prophecy (Disc 2) | PC | | Original | | CD-C95-166-1 | |
| Of Light and Darkness: The Prophecy (Disc 3) | PC | | Original | | CD-C95-166-2 | |
| Of Orcs and Men | XBOX360 | | Original | | FE-2009 | |
| Of Orcs and Men | PS3 | 01.01 | Original | | BLES-01586 | |
| Off Road | WII | | Original | | RVL-RO2P-EUR | |
| Off Road | PS2 | 1.01 | Original | | SLES-55032 | |
| Off-Road Redneck Racing | PC | | Original | | CD-C98-1259-0 | |
| Off-Road: Wide Open
Test Drive Off-Road: Wide Open | XBOX | | Original | | IG-001 | |
| Off-Road: Wide Open
Test Drive Off-Road: Wide Open | PS2 | 1.00 | Original | | SLES-50232 | |
| Off-World Interceptor
オフ‐ワールド・インターセプター | 3DO | | Original | | FZ-SJ3151 | |
 | Off-World Interceptor
혹성질주 | 3DO | | Original | | GDT-GA241 | |
| Off-World Interceptor Extreme | SS | 1.000 | Original | | T-15908H-50 | |
| Off-World Interceptor Extreme
オフワールド・インターセプター エクストリーム | PSX | | Original | | SLPS 00122 | |
| Off-World Interceptor Extreme | SS | 1.000 | Original | | T-15908H | |
 | The Official Guide to The Daedalus Encounter: Companion Disc | PC | | Original | | | |
| Official Xbox Starter Pack 2004
Xbox 20 Playable Demos | XBOX | | Original | | IM-001 | |
| Das Offizielle Xbox-Magazin: Cover-DVD 01/2003 | XBOX | | Original | | IM-012 | |
| Das Offizielle Xbox-Magazin: Cover-DVD 01/2004 | XBOX | | Original | | IM-024 | |
| Das Offizielle Xbox-Magazin: Cover-DVD 01/2006 | XBOX | | Original | | IM-049 | |
| Das Offizielle Xbox-Magazin: Cover-DVD 02/2003 | XBOX | | Original | | IM-013 | |
| Das Offizielle Xbox-Magazin: Cover-DVD 03/2005 | XBOX | | Original | | IM-038 | |
| Das Offizielle Xbox-Magazin: Cover-DVD 04/2003 | XBOX | | Original | | IM-015 | |
| Das Offizielle Xbox-Magazin: Cover-DVD 04/2005 | XBOX | | Original | | IM-039 | |
| Das Offizielle Xbox-Magazin: Cover-DVD 05/2005 | XBOX | | Original | | IM-040 | |
| Das Offizielle Xbox-Magazin: Cover-DVD 06/2004 | XBOX | | Original | | IM-029 | |
| Das Offizielle Xbox-Magazin: Cover-DVD 07/2003 | XBOX | | Original | | IM-018 | |
| Das Offizielle Xbox-Magazin: Cover-DVD 07/2005 | XBOX | | Original | | IM-042 | |
| Das Offizielle Xbox-Magazin: Cover-DVD 08/2002 | XBOX | | Original | | IM-001 | |
| Das Offizielle Xbox-Magazin: Cover-DVD 08/2003 | XBOX | | Original | | IM-019 | |
| Das Offizielle Xbox-Magazin: Cover-DVD 08/2005 | XBOX | | Original | | IM-043 | |
| Das Offizielle Xbox-Magazin: Cover-DVD 09/2005 | XBOX | | Original | | IM-044 | |
| Das Offizielle Xbox-Magazin: Cover-DVD 09/2006 | XBOX | | Original | | IM-226 | |
| Das Offizielle Xbox-Magazin: Cover-DVD 10/2003 | XBOX | | Original | | IM-021 | |
| Das Offizielle Xbox-Magazin: Cover-DVD 10/2004 | XBOX | | Original | | IM-034 | |
| Das Offizielle Xbox-Magazin: Cover-DVD 10/2005 | XBOX | | Original | | IM-045 | |
| Das Offizielle Xbox-Magazin: Cover-DVD 11/2002 | XBOX | | Original | | IM-002 | |
| Das Offizielle Xbox-Magazin: Cover-DVD 11/2004 | XBOX | | Original | | IM-035 | |
| Das Offizielle Xbox-Magazin: Cover-DVD 11/2005 | XBOX | | Original | | IM-046 | |
| Das Offizielle Xbox-Magazin: Cover-DVD 12/2002 | XBOX | | Original | | IM-003 | |
| Das Offizielle Xbox-Magazin: Cover-DVD 12/2005 | XBOX | | Original | | IM-048 | |
| Offroad
Off-Road Redneck Racing | PC | | Original | | OFFPCCDML | |
| Offroad
Off-Road Redneck Racing | PC | | Original | | ECD 000592K | |
| Offroad Extreme! | WII | | Original | | RVL-ROFX-NOE | |
| Offroad Extreme! | PS2 | 1.01 | Original | | SLES-52751 | |
| Offroad Extreme! | WII | | Original | | RVL-ROFP-UKV-1 | |
| Offroad Extreme! Special Edition | PC | | Original | | | |
| Offroad Extreme! Special Edition | PS2 | 1.00 | Original | | SLES-54109 | |
| Offroad Extreme! Special Edition | WII | | Original | | RVL-ROFE-USA-B0 | |
| Oficery: Special'noe izdanie
Офицеры: Специальное издание | PC | 1.18.2 | Original | | | |
| Ogallala: Das Kartenspiel für PC | PC | | Original | | ECD000799D 00031111-001 | |
| Ogura Hyakunin Isshu
小倉百人一首 | 3DO | | Original | | SV-0201 | |
| Oh-chan no Oekaki Logic for Palm
おーちゃんのお絵かきロジック ｆｏｒ Ｐａｌｍ | PALM | 1.04 | Original | | | |
| Oha Suta Dance Dance Revolution
おはスタ ダンス ダンス レボリューション | PSX | | Original | | SLPM 86603 | |
| Oha Suta Series 01: Zonapara
おはスタシリーズ０１ 象南波羅～ゾナパラ～ | KSITE | | Original | | 536956 | |
| Oha Suta Series 02: Oha Ska!
おはスタシリーズ０２ おは スカ | KSITE | | Original | | 538714 | |
| Ohenro-San: Hosshin no Dojo (Awa Kuni) Hen
お遍路さん 発心の道場（阿波国）編 | GC | | Original | | DL-DOL-GODJ-JPN | |
| Oil of Ulay: Colour Collection: Colour Consultant | CDI | | Original | | | |
| Oil Platform Simulator | PC | 1.0 | Original | | | |
| Oil Rush | PC | | Original | | | |
| Oja Majo DoReMi Dokkan! Nijiiro ParaDice
おジャ魔女どれみドッカ～ン！ にじいろパラダイス | PSX | | Original | | SLPS 03497 | |
| Ojousama o Nerae!!
お嬢様を狙え！！ | SS | 1.003 | Original | | T-38101G | |
| Okano Software Classics: Volume 2 | PC | | Original | | | |
| Okashina Mother Goose: Mixed-Up Mother Goose
おかしなマザー・グース | FMT | | Original | | HMB-235 | |
| Okigaru Igo Taikyoku
お気軽囲碁対局 | PALM | | Original | | | |
| Okigaru Igo Taikyoku
お気軽囲碁対局 | PPC | | Original | | | |
| Oktoberfest Wiesn-Gaudi | PC | 1.0 | Original | | | |
| Okudera Yasuhiko no Sekai o Mezase! Soccer Kids: Nyuumon-hen
奥寺康彦の世界をめざせ! サッカー・キッズ 入門編 | SS | 1.310 | Original | | T-26001G | |
| Old El Paso Recipes for Family Fun | PC | | Original | | | |
| Oldtimer | PHOTO-CD | | Original | | 813 0067 | |
| Oldtimer: Erlebte Geschichte Teil II | PC | | Original | | | |
 | Olivers Äventyr: Drakens Förbannelse | PC | | Original |    | 021120110 | |
| Ollo in the Sunny Valley Fair | PC | | Original | | | |
| Olympia, Yamasa: Virtua Pachi-Slot II: Jissen! Bishoujo Kouryakuhou
オリンピア・山佐 バーチャパチスロⅡ ～実戦！美少女攻略法～ | PSX | | Original | | SLPS 00714 | |
| Olympic Soccer | SS | 2.000 | Original | | T-07904H-18 | |
| Olympic Soccer
オリンピックサッカー | PSX | | Original | | SLPS 00523 | |
| Olympic Soccer
オリンピックサッカー | SS | 1.002 | Original | | T-7304G | |
| Olympic Soccer | SS | 2.000 | Original | | T-7904H | |
| The Omega Stone: Riddle of the Sphinx II (Disc 1) | 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 3) | PC | 1.2.3.2 | Original | | | |
| The Omega Stone: Riddle of the Sphinx II (Disc 4) | PC | 1.2.3.2 | Original | | | |
| The Omega Stone: Secrets of the Ancients (Disc 1) | PC | | Original | | OMSTENCD1 | |
| The Omega Stone: Secrets of the Ancients (Disc 2) | PC | | Original | | OMSTENCD2 | |
| The Omega Stone: Secrets of the Ancients (Disc 3) | PC | | Original | | OMSTENCD3 | |
| The Omega Stone: Secrets of the Ancients (Disc 4) | PC | | Original | | OMSTENCD4 | |
| Omgaan met Steriele Medische Hulpmiddelen
Omgaan met Steriele Medische Hulp-Middelen | CDI | | Original | | | |
| Omoide ni Kawaru Kimi: Memories Off
想い出にかわる君 ～Ｍｅｍｏｒｉｅｓ Ｏｆｆ～ | DC | 1.001 | Original | | T-19718M | |
| On Air | PC | | Original | | BROWNIE 990201 | |
| On the Ball: World Cup Edition | PC | 1.00 | Original | | | |
| Ona: Sbornik e'roticheskix igr
Она: Сборник эротических игр | PC | | Original | | 10-20999 | |
| Once Upon a Time | WII | Rev 1 | Original | | RVL-SUTE-USA-B0 | |
| One Must Fall: Battlegrounds | PC | 2090 | Original | | | |
| One Must Fall: Battlegrounds | PC | 2090 | Original | | | |
| One Piece: Grand Adventure
원피스: 그랜드 배틀 어드벤처 | PS2 | 1.00 | Original |  | SLKA 25388 | |
| One Piece: Grand Battle! Rush
ワンピース グラバト！ ラッシュ | GC | | Original | | DL-DOL-GOPJ-JPN | |
| One Piece: Grand Battle! Rush
원피스 그랜드배틀! RUSH | PS2 | 1.00 | Original | | SLKA 25299 | |
| One Piece: Pirate Warriors | PS3 | 01.01 | Original | | BLES-01672 … | |
| One Piece: Pirate Warriors + One Piece: Pirate Warriors 2 | PS3 | 01.00 | Original | | BLES-02131 | |
| One Piece: Pirate Warriors 3 | PS3 | 01.00 | Original | | BLES-02140 | |
| One Piece: Pirates Carnival
ワンピース パイレーツカーニバル | PS2 | 1.01 | Original | | SLPS 25576 | |
| One Piece: Pirates Carnival
원피즈 해적카니발 | PS2 | 1.01 | Original | | SLKA 25351 | |
| One Piece: Round the Land! | PS2 | 1.00 | Original | | SLES-52731 | |
| One Piece: Round the Land!
원피스 라운드 더 랜드! | PS2 | 1.00 | Original | | SLKA 25208 | |
| One Piece: Unlimited Adventure
ワンピース アンリミテッドアドベンチャー | WII | | Original | | RVL-RIPJ-JPN | |
| One Piece: Unlimited Cruise 1: The Treasure Beneath the Waves | WII | | Original | | RVL-ROUP-EUR-B0 | |
| One Piece: Unlimited Cruise: Episode 2: Mezameru Yuusha
ワンピース アンリミテッドクルーズ エピソード２ 目覚める勇者 | WII | | Original | | RVL-RIUJ-JPN | |
| One Piece: Unlimited Cruise: Episode 2: Mezameru Yuusha
ワンピース アンリミテッドクルーズ エピソード２ 目覚める勇者 | WII | Rev 1 | Original | | RVL-RIUJ-JPN-B0 | |
| One Two Animal: Let's Animal Series 1
ワンツーあにまる レッツあにまるシリーズ１ | PC | | Original | | LAOA-96101 | |
| Onechanbara: Bikini Zombie Slayers | WII | | Original | | RVL-RONE-USA | |
| Oneechanbara Revolution
お姉チャンバラ Ｒｅｖｏｌｕｔｉｏｎ | WII | | Original | | RVL-RONJ-JPN | |
| Oneechanbara VorteX: Imichi o Tsugu Mono-tachi
お姉チャンバラ vorteX ～忌血を継ぐ者たち～ | XBOX360 | | Original | | DP-2002 | |
| Oneechanbara Z: Kagura
お姉チャンバラZ～カグラ～ | XBOX360 | | Original | | DP-2036 | |
| Oneechanbara Z: Kagura with NoNoNo!
お姉チャンバラZ～カグラ～ With NoNoNo! | PS3 | 01.03 | Original | | BLJS 10221 | |
| OnHand Chess / Sega Swirl Lite | PALM | PDA103-01 | Original | | PDA103-01 | |
| The Oni Taiji!!: Mezase! Nidaime Momotarou
Ｔｈｅ鬼退治！！ 目指せ！二代目桃太郎 | PSX | | Original | | SLPS 00089 | |
| Onigunsou Kuramochi Yuzo no Yatchimasu: Spartan Manshu
鬼軍曹倉持勇造の殺っちます ～スパルタン満州～ | PC | | Original | | | |
| Onikiri-den
鬼斬伝 | PC | | Original | | ZEUS-00001 | |
| Onimusha Buraiden
鬼武者 無頼伝 | PS2 | 1.02 | Original | | SLPM 65411 | |
| Onimusha: Put' samuraja
Onimusha: Путь самурая | PC | | Original | | | |
| Onimusha: Put' samuraya (Disc 1) (Igrovoj)
Onimusha: Путь самурая | PC | | Original | | | |
| Onimusha: Put' samuraya (Disc 2)
Onimusha: Путь самурая | PC | | Original | | | |
| Onimusha: Put' samuraya (Disc 3)
Onimusha: Путь самурая | PC | | Original | | | |
| Onimusha: Put' samuraya (Disc 4)
Onimusha: Путь самурая | PC | | Original | | | |
| Onimusha: Warlords | PS2 | 1.00 | Original | | SLPM 67507 | |
| Onkel Alberts geheimnisvolles Notizbuch | PC | | Original | | | |
| Online Start-Up Disc v3.0 | PS2 | 1.02 | Original | | PBPX-95239 | |
| Online Start-Up Disc v3.5: Broadband Only | PS2 | 1.00 | Original | | PBPX-95246 | |
| Only One 2: Bijin Casino Dealer Hitomi: Sei no Roulette
オンリーワン２ 美人カジノディーラー瞳 性のルーレット | PC | | Original | | ON2-HITO | |
| Only One 2: Naomi: Ai no Inori ga Todoku Toki
オンリーワン２ なおみ 愛の祈りが届く時 | PC | 1.0.0.1 | Original | | ON2-NAO | |
| Onore no Shinzuru Michi o Yuke
己の信ずる道を征け | PSP | 1.01 | Original | | ULJM 05465 | |
| Onsalakorv | PC | | Original | | | |
| Onsen Ryokou Kakumei: Ich liebe dich.!
温泉旅行革命 ～Ｉｃｈ ｌｉｅｂｅ ｄｉｃｈ．！～ | PC | 1.00 | Original | | RUCCA-003 | |
| De Ontdekker en het Mysterie van de Diamanten Scarabee
The Explorer and the Mystery of the Diamond Scarab | WII | | Original | | RVL-SODP-EUR-B0 | |
| Ooedo Senryoubako
大江戸千両箱 | PSP | 1.01 | Original | | ULJM 05099 | |
| Oogami Ichirou Funtou-ki: Sakura Taisen Kayou Show "Beni Tokage" yori (Disc 1)
大神一郎奮闘記 ～サクラ大戦歌謡ショウ「紅蜥蜴」より～ | DC | 1.000 | Original | | HDR-0057 | |
| Oogami Ichirou Funtou-ki: Sakura Taisen Kayou Show "Beni Tokage" yori (Disc 2)
大神一郎奮闘記 ～サクラ大戦歌謡ショウ「紅蜥蜴」より～ | DC | 1.000 | Original | | HDR-0057 | |
| Ookami
大神 | WII | | Original | | RVL-ROWJ-JPN-B0 | |
| Oops! Prank Party | WII | Rev 1 | Original | | RVL-SPIE-USA-B0 | |
| Opel Corsa '97 | PHOTO-CD | | Original | | | |
| Opel Vectra '99 | PHOTO-CD | | Original | | | |
| Open Season | WII | | Original | | RVL-ROPP-EUR | |
| Open Season | WII | | Original | | RVL-ROPE-USA | |
| Open Universiteit: Practicum Toxicologische Histopathologie
Open University: Practical Toxicological Histopathology | CDI | | Original | | 4589 | |
| Opera Fatal | PC | | Original | | | |
| Opera House Preview Disc
オペラハウス プレビューディスク | PC | | Original | | | |
| Opera House Preview Disc #2
オペラハウス プレビューディスク ＃２ | PC | | Original | | | |
| Opera House Preview Disc #2.3
オペラハウス プレビューディスク ＃２．３ | PC | | Original | | | |
| Operaciya "Barbarossa"
Операция "Барбаросса" | PC | | Original | | | |
| Operaciya "Blau"
Операция "Блау" | PC | | Original | | | |
| Operaciya "Plastilin" (Disc 1)
Операция "Пластилин" | PC | | Original | | | |
| Operaciya "Plastilin" (Disc 2)
Операция "Пластилин" | PC | | Original | | | |
| Operaciya Bagration
Операция Багратион | PC | | Original | | | |
| Operation Barbarossa: The Struggle for Russia | PC | | Original | | | |
| Operation Body Count | PC | | Original | | | |
| Operation Body Count: One Level Preview | PC | | Original | | | |
| Operation Darkness
オペレーション・ダークネス | XBOX360 | | Original | | SU-2001 | |
| Operation Darkness | XBOX360 | | Original | | AT-2002 | |
| Operation Europe: Path to Victory 1939-45 | PC | | Original | | | |
| Operation Flashpoint: Cold War Crisis | PC | 1.0 | Original | | MOPFCDEU00 | |
| Operation Flashpoint: Dragon Rising | PC | 1.0 | Original | | MOFP2CDEU00 | |
| Operation Flashpoint: Dragon Rising | PC | | Original | | MOFP2CDEU00 | |
| Operation Flashpoint: Dragon Rising | XBOX360 | | Original | | CM-2065 | |
| Operation Flashpoint: Dragon Rising
오퍼레이션 플래시포인트: 드래곤 라이징 | PS3 | 01.01 | Original | | BLKS 20157 | |
 | Operation Flashpoint: Gold Upgrade
Operace Flashpoint: Gold Upgrade | PC | | Original |  | | |
| Operation Flashpoint: Red River | PC | 1.0 | Original | | MOFP3CDEU00 | |
| Operation Flashpoint: Red River | XBOX360 | | Original | | CM-2104 | |
| Operation Flashpoint: Red River | PC | | Original | | MOFP3CDUS00 | |
| Operation Mittelmeer | PC | | Original | | | |
| Operation Neptun | PC | 1.2 | Original | | ONT844AW-CD | |
| Operation Neptune | PC | 1.22 | Original | | ONT744CE-CD | |
| Operation Omega | PC | | Original | | 7-20286-92175-1 | |
| Operation Thunderstorm | PC | 1.0 | Original | | | |
| Operation WinBack 2: Project Poseidon | XBOX | | Original | | KO-008 | |
| The Operational Art of War II: 1956-2000
The Operational Art of War II: Bewaffnete Konflikten | PC | | Original | | | |
| The Operational Art of War: Century of Warfare | PC | | Original | | | |
| The Operative: No One Lives Forever (Disc 2) | PC | 1.0 | Original | | FXX08903223D2 | |
| Operator's Side
オペレーターズサイド | PS2 | 1.02 | Original | | SCPS 15039 | |
| Opoona | WII | | Original | | RVL-RPOP-EUR | |
| Opoona
オプーナ | WII | | Original | | RVL-RPOJ-JPN | |
| Opowieści z Narnii: Lew, Czarownica i Stara Szafa | PS2 | 1.00 | Original | | SLES-53713 | |
| Opowieści z Narnii: Lew, Czarownica i Stara Szafa (Disc 1) | PC | | Original | | | |
| Opowieści z Narnii: Lew, Czarownica i Stara Szafa (Disc 2) | PC | | Original | | | |
| Opowieści z Narnii: Lew, Czarownica i Stara Szafa (Disc 3) | PC | | Original | | | |
| Opowieści z Narnii: Lew, Czarownica i Stara Szafa (Disc 4) | PC | | Original | | | |
| Optimum Resource Sampler | PC | | Original | | | |
| Oracle no Houseki: Jewels of the Oracle
オラクルの宝石 Ｊｅｗｅｌｓ ｏｆ ｔｈｅ Ｏｒａｃｌｅ | PSX | | Original | | SLPS 00240 | |
| The Orange Box | PS3 | 01.00 | Original | | BLES-00172 | |
| The Orange Box | XBOX360 | | Original | | EA-2063 | |
| The Orange Box (Disc 1) | PC | | Original | | VAD07705811D | |
| The Orange Box (Disc 2) | PC | | Original | | VAD07705811D2 | |
| The Orange Box | XBOX360 | | Original | | EA-2063 | |
| The Orange Box (Disc 1) | PC | | Original |  | | |
| The Orange Box (Disc 2) | PC | | Original | | | |
 | The Orange Box (Disc 1)
戰慄時空2：二部曲重裝旗艦版 | PC | | Original | | TTE0193 | |
| The Orange Box (Disc 2)
戰慄時空2：二部曲重裝旗艦版 | PC | | Original | | TTE0193 | |
| Orange Pocket: Root
オレンジポケット ～リュート～ | PS2 | 1.02 | Original | | SLPM 65525 | |
| Orda: Severnyj veter
Орда: Северный ветер | PC | | Original | | | |
| Order Up! | WII | | Original | | RVL-ROXX-EUR | |
| Order Up! | WII | | Original | | RVL-ROXE-USA | |
| Order Up! | WII | Rev 1 | Original | | RVL-ROXE-USA | |
| Order Up! | WII | | Original | | RVL-ROXP-UKV | |
| Order Up!! | PS3 | 01.04 | Original | | BLES-01470 | |
| Order Up!! | PS3 | 01.02 | Original | | BLUS-30904 | |
| Ore ga Kantoku da! Volume 2: Gekitou Pennant Race
オレが監督だ！Ｖｏｌｕｍｅ．２ ～激闘ペナントレース～ | PS2 | 1.04 | Original | | SLPM 65056 | |
| Ore no Imouto ga Konnani Kawaii Wake ga Nai. Happy End
俺の妹がこんなに可愛いわけがない。 ハッピーエンド | PS3 | 01.01 | Original | | BLJS 10238 | |
| Ore no Shita de Agake
俺の下で ＡＧＡＫＥ | PS2 | 1.01 | Original | | SLPS 25796 | |
| Ore no Shita de Agake
俺の下であがけ | PC | System3.9 Ver.5.43 | Original | | ALB-005 | |
| Ore no Yome: Anata dake no Hanayome
俺の嫁 ～あなただけの花嫁～ | XBOX360 | | Original | | IF-2008 | |
| 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 | |
| Oregano
Oregano: RISC OS Web Browser | ARCH | | Original | | | |
| The Oregon Trail 3rd Edition: Pioneer Adventures (Disc 1) | PC | 1.2 | Original | | OTA744CE-CD1 | |
| The Oregon Trail 3rd Edition: Pioneer Adventures (Disc 2) | PC | 1.2 | Original | | OTA744BE-CD2 | |
| The Oregon Trail 3rd Edition: Pioneer Adventures (Disc 3) | PC | | Original | | OTA744AE-CD3 | |
| The Oregon Trail 3rd Edition: Pioneer Adventures (Disc 3) | PC | 1.2 | Original | | OTA744BE-CD3 | |
| The Oregon Trail 4th Edition (Disc 1) | PC | 1 | Original | | OTF744AE-CD1 | |
| The Oregon Trail 4th Edition (Disc 2) | PC | 1 | Original | | OTF744AE-CD2 | |
| The Oregon Trail 4th Edition (Disc 3) | PC | 1 | Original | | OTF744AE-CD3 | |
| The Oregon Trail 5th Edition: Adventures Along the Oregon Trail | PC | 1.0 | Original | | 380859A-CD | |
| Oregon Trail II | PC | 1.0 | Original | | | |
| Oregon Trail II + Logic Quest | PC | 1.2/1.0 | Original | | | |
| The Oregon Trail | PC | 1.0 | Original | | | |
| The Oregon Trail | PC | 1.1 | Original | | #HCD606 | |
| 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: Contra
オレたちゲーセン族 魂斗羅 | PS2 | 1.00 | Original | | SLPM 62730 | |
| 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: 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: 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: Quarth
オレたちゲーセン族 クォース | PS2 | 1.02 | Original | | SLPM 62704 | |
| 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 | |
![2 and more dumps from original media [!]](/images/status/green.png "2 and more dumps from original media [!]")