Region | Title | System | Version | Edition | Languages | Serial | Status |
| Panzer Elite (Bonus-CD) | PC | 1.1 | Special Edition | | ROPANZEREL-BONUSCD | |
| Panzer Elite | PC | 1.05 | Original | | | |
| Panzer Dragoon | PC | 1.0 | Bundle Version Diamond OEM | | | |
| Panzer Dragoon | PC | | Expert Software | | 6804 01 | |
| Panzer Dragoon パンツァードラグーン | PC | | Not for Resale | | SPB-003 | |
| Panzer Corps Wehrmacht | PC | | Collector's Edition | | | |
| Panzer Commander パンツァーコマンダー プラス | PC | 1.3 | EA Best Selections | | KUD-0010 | |
| Panzer Commander | PC | | Original | | CS090635 | |
| Panzer Commander | PC | 1.0 | Original | | CS090627 | |
| Panzer Campaigns: France '40 | PC | | Original | | | |
| Panty Raider: From Here to Immaturity | PC | | Original | | 0-7435-0293-0 | |
| Pantos Story パントス・ストーリー | PC | | Original | | | |
| Panorama Tantei Game: Kaitou Q パノラマ探偵ゲーム 怪盗Q | PC | 1.0.1.0 | Original | | | |
| Panopticon: Pfad der Reflektionen | PC | | Original | | | |
| Panic in the Park (Disc 3) | PC | | Original | | 70000 | |
| Panic in the Park (Disc 1) | PC | | Original | | 70000 | |
| Pandora's Box | PC | 1.0a | Original | | 0599 Part No. X04-67594 | |
| Pandora's Box | PC | 1.0 | Original | | 0599 Part No. X04-67594 | |
| Pandora: First Contact | PC | | Original | | PFC_PCL_GER | |
| The Pandora Directive (Disc 1) | PC | | Tex Murphy Double Feature | | | |
| The Pandora Directive | PC | 1.1 | Demo | | | |
| The Pandora Directive (Disc 6) | PC | | Original | | | |
| The Pandora Directive (Disc 5) | PC | | Original | | | |
| The Pandora Directive (Disc 4) | PC | | Original | | | |
| The Pandora Directive (Disc 3) | PC | | Original | | | |
| The Pandora Directive (Disc 2) | PC | | Original | | | |
| The Pandora Directive (Disc 1) | PC | | Original | | | |
| Die Pandora Akte (Disc 6) | PC | | Original | | | |
| Die Pandora Akte (Disc 5) | PC | | Original | | | |
| Die Pandora Akte (Disc 4) | PC | | Original | | | |
| Die Pandora Akte (Disc 3) | PC | | Original | | | |
| Die Pandora Akte (Disc 2) | PC | | Original | | | |
| Die Pandora Akte (Disc 1) | PC | | Original | | | |
| Pandoo! | PC | | Original | | CD6044 | |
| Pandemonium! | PC | | Rerelease | | | |
| Pandemonium! | PC | | Original | | 2214210-590001 | |
| Pandemonium! | PC | | Bundle Version Hercules OEM | | | |
| Pandemonium! 小丑奇兵 | PC | | | | | |
| Pandemonium 2 パンデモニウム2 | PC | 2.00 | Original | | MSD-12800 | |
| Pandemonium 2 | PC | | Original | | | |
| Panda N. 5 Панда №5 | PC | | Covermount | | | |
| Pan Zabyvalkin sobiraet komp'yuter Пан Забывалкин собирает компьютер | PC | | Original | | RUSSOBIT-M 2004/491 | |
| Pan Schastlivkin v strane Vverxtormashii Пан Счастливкин в стране Вверхтормашии | PC | | Original | | RUSSOBIT-M 2004/556 | |
| Pametno Razmisljaj | PC | | Original | | 272038 | |
| Palette パレット | PC | | Shokai Tokuten | | F&C-102 | |
| Palais de Reine (Disc 2) パレドゥレーヌ | PC | | Original | | KGD-06071 | |
| Palais de Reine (Disc 1) パレドゥレーヌ | PC | | Original | | KGD-06070 | |
| Pajamachan Room Five! DX ぱじゃまちゃんるーむ Five! DX | PC | | Original | | | |
| Pajama Sam's Sock Works | PC | | Original | | 0001427 | |
| Pajama Sam's One-Stop Fun Shop | PC | | Original | | Part No. 04-18399CD | |
| Pajama Sam's Lost & Found | PC | | Original | | Part No. 04-16214CD | |
| Pajama Sam: Verloren Voorwerpen | PC | | Original | | | |
| Pajama Sam: Life Is Rough When You Lose Your Stuff | PC | | Original | | Part # 24548CD | |
| Pajama Sam: Je Bent Wat Je Eet, 'T Is Maar Dat Je Het Weet | PC | | Rerelease | | | |
| Pajama Sam: Games to Play on Any Day | PC | | Original | | Part # 04-22971CD | |
| Pajama Sam: De Helse Jacht op de Duistere Nacht Pajama Sam in "De Helse Jacht op de Duistere Nacht" | PC | | Original | | | |
| Pajama Sam 3: You Are What You Eat from Your Head to Your Feet | PC | | General Mills | | MCBBIGGCEREAL1 A46826 | |
| Pajama Sam 2: Thunder and Lightning Aren't So Frightening | PC | | Original | | 04-00000H1678 | |
| Pajama Sam 2: Thunder and Lightning Aren't So Frightening | PC | | Original | | Part No. 04-00000H1678 | |
| Pajama Sam / Spy Fox: Some Assembly Required | PC | | Kellogg's | | | |
| Painter Bear's Language Bridge Spanish/English | PC | | Original, Teacher's Edition | | | |
| Painter Bear's Language Bridge French/English | PC | | Original, Teacher's Edition | | | |
| Paintball Heroes X3D Paintball Heroes | PC | Rev. D | X3D | | | |
| Paintball Challenge | PC | 1.0 | | | | |
| Painkiller: Triple Dose (Disc 2) | PC | 1.0 | Original | | DVD593CD | |
| Painkiller: Triple Dose (Disc 1) | PC | 1.0 | Original | | DVD593CD | |
| Painkiller: Resurrection | PC | DPV 1.0 | Original | | PCO742CD | |
| Painkiller: Resurrection | PC | | Original | | 500343 | |
| Painkiller: Redemption | PC | 1.05f | Original | | | |
| Painkiller: Recurring Evil | PC | 43.Final - Patch 1 | Original | | 001584 | |
| Painkiller: Pandemonium (Disc 3) | PC | | Original | | | |
| Painkiller: Pandemonium (Disc 2) | PC | | Original | | | |
| Painkiller: Pandemonium (Disc 1) | PC | | Original | | | |
| Painkiller: Kreshhenyj Krov'yu (Disc 3) (Igrovoj disk) Painkiller: Крещеный Кровью | PC | 1.00 | Original | | | |
| Painkiller: Kreshhenyj Krov'yu (Disc 2) Painkiller: Крещеный Кровью | PC | 1.00 | Original | | | |
| Painkiller: Hell & Damnation | PC | 1.0 | Original | | 002161 | |
| Painkiller: Heaven's Got a Hitman (Disc 3) | PC | IV 1.0 | Original | | PC0391CD | |
| Painkiller: Heaven's Got a Hitman (Exclusive Alienware Customer Demo) | PC | 0.93a | | | | |
| Painkiller: Czarna Edycja | PC | | eXtra Klasyka Next | | | |
| Painkiller: Complete Collection (Disc 2) Painkiller Collection | PC | | Original | | | |
| Painkiller: Complete Collection (Disc 1) Painkiller Collection | PC | | Original | | | |
| Painkiller: Black Edition | PC | 1.0 | Original | | 500763 | |
| Painkiller: Black Edition | PC | | Original | | | |
| Painkiller: Battle out of Hell (Disc 2) | PC | | Original | | PKXPGRCD2 | |
| Painkiller: Battle out of Hell (Disc 1) | PC | | Original | | PKXPGRCD1 | |
| Painkiller | PC | | Demo | | | |
| Painkiller (Disc 3) | PC | 1.0 | Covermount | | | |
| Painkiller (Disc 2) | PC | 1.0 | Covermount | | | |
| Painkiller (Disc 1) | PC | 1.0 | Covermount | | | |
| Painkiller | PC | 1.0 | Covermount | | | |
| Painkiller (Disc 3) | PC | | Original | | PNKRCD3GR | |
| Painkiller (Disc 2) | PC | | Original | | PNKRCD2GR | |
| Painkiller (Disc 1) | PC | | Original | | PNKRCD1GR | |
| Painkiller Painkiller: Verega Ristitud | PC | 1.64 | Original | | | |
| Painkiller (Original Soundtrack) | PC | | Original | | | |
| Pain ペイン | PC | 1.0 | Original | | | |
| Paidiko Lexiko: Ellinikis Noimatikis Glossas Παιδικό Λεξικό: Ελληνικής Νοηματικής Γλώσσας | PC | | Original | | | |
| Paholaisen Loukku | PC | 1.0 | Original | | | |
| Paganitzu | PC | 1.02 | Original | | | |
| Il Padrino | PC | 1.0 | Covermount | | | |
| Il Padrino | PC | 1.0 | Original | | EAI07704785D | |
| El Padrino The Godfather: The Game | PC | 1.0 | EA Classics | | DVD 1012 | |
| Padal proshlogodnij sneg: Zolotoe izdanie Падал прошлогодний снег: Золотое издание | PC | | Original | | | |
| Padal proshlogodnij sneg (Disc 2) Падал прошлогодний снег | PC | | 1C: Kollekciya igrushek | | | |
| Padal proshlogodnij sneg (Disc 1) Падал прошлогодний снег | PC | | 1C: Kollekciya igrushek | | | |
| PacoQ Web パコQ WEB | PC | | Original | | SYNCH 0028E | |
| PacMax Classics | PC | | Original | | | |
| Packy & Marlon | PC | | Original | | 338-0000-9573-0598 | |
| Pack Rubis | PC | | Bundle Version Continental Edison OEM | | | |
| Pack 5 Racing Games (Disc 2) | PC | | Original | | | |
| Pack 5 Racing Games (Disc 1) | PC | | Original | | | |
| Pacific Warriors: Air Combat Action | PC | | Budget Rerelease | | | |
| Pacific Warriors: Air Combat Action | PC | | Original | | | |
| Pacific Storm: Allies | PC | 1.2.4146 | Original | | ZPG-0059 | |
| Pacific Liberation Force + Ziemia Obiecana | PC | | wkiosku | | | |
| Pacific Gunner | PC | | Original | | Part # 22706CD | |
| Pacific Gunner | PC | | Serie MAX | | | |
| Pacific General | PC | 1.0 | Original | | CS090437 | |
| Pacific General | PC | 1.0 | Review | | | |
| Pacific General | PC | 1.1 | Rerelease | | 2216610-590002 | |
| Pacific General | PC | 1.0 | Original | | 2216610-590001 | |
| Pacific Fighters (Disc 2) | PC | 3.0 | The Ultimate Flight Collection | | 782742-CD2 | |
| Pacific Fighters (Disc 1) | PC | 3.0 | The Ultimate Flight Collection | | 782742-CD1 | |
| Pacific Fighters (Disc 2) | PC | 3.0 | EMCx Entertainment Revenge | | | |
| Pacific Fighters (Disc 1) | PC | 3.0 | EMCx Entertainment Revenge | | | |
| Pachinko Keoilokbou II 柏青哥俱樂部 II | PC | | Original | | | |
| Pachinko Jikki Kouryaku Series: CR Daiku no Gen-san パチンコ実機攻略シリーズ CR大工の源さん | PC | | Original | | PDG-019-3 | |
| Pachi-hime: Cutie Heroine Densetsu PACHI姫 ~キューティーヒロイン伝説~ | PC | | Original | | 4 988715 005830 | |
| PacaPlusPlus パカプラスぷらす! | PC | | Original | | | |
| Pac...man Mania: Breakout | PC | | Original | | CDR2015 | |
| Pac-Manía: Letras y Números | PC | 1.0 | Covermount | | | |
| Pac-Man: Adventures in Time パックマン アドベンチャー イン タイム | PC | 1.0 | Original | | 506-7228 | |
| Pac-Man World Rally | PC | 1.0 | Original | | PART 40015 | |
| Pac-Man World 3 | PC | 1.0 | Original | | 40007 | |
| Pac-Man World 2 | PC | 1.0 | Rerelease | | | |
| Pac-Man World 2 | PC | | Original | | | |
| Pac-Man All-Stars | PC | 1.0 | Pac-Man Three Pack | | Part # 23530CD | |
| Pac Games 2000 | PC | | Original | | CD 479 | |
| Paard & Pony: In het Zadel | PC | | Original | | | |
| Pa Oppdagelsesferd med Peter og Marie: Bondegarden På Oppdagelsesferd med Peter og Marie: Bondegården | PC | | Original | | | |
| P.K.'s Place 3: Carlos at the Races! | PC | 2.0 | Original | | | |
| P.K.'s Place 2: Hoopo at Sea! | PC | 2.0 | Original | | | |
| P.K.'s Math Studio | PC | 2.0 | Original | | | |
| P.K.'s Math Studio | PC | 2.0 | Original | | | |
| P.J.'s Reading Adventures (How the Leopard Got His Spots) | PC | | Original | | 0895 Part No. 67003 | |
| P.J.'s Reading Adventures (Paul Bunyan) | PC | | Original | | 0696 Part No. 62899 | |
| P.J.'s Reading Adventures (Koi and the Kola Nuts) | PC | | Original | | 0696 Part No. 66551 | |
| P.D.: The Gate City ピーディー ザ・ゲート・シティ | PC | | Original | | | |
| P.A.W.S: Personal Automated Wagging System P.A.W.S: Symulator Psa | PC | | Covermount | | SELL 0071 | |
| P-Zone (Disc 2) | PC | | Original | | | |
| P-Zone (Disc 1) | PC | | Original | | | |
| Ozzie's World | PC | | Original | | | |
| Ozzie's World オジィーズワールド | PC | | Original | | ASOW-71110 | |
| Ozawa-Ken+ | PC | | Original | | | |
| Oz: The Magical Adventure | PC | 7.0.0.198 | Rerelease | | 92785 | |
| Oz: The Magical Adventure | PC | | Original | | | |
| Oyunlarla Dil Bilgisi Oyunlarla Matematik | PC | | Original | | | |
| Oyungezer: Mart 2010 | PC | | | | | |
| Oynayarak Ogreniyorum 1 Oynayarak Öğreniyorum 1 | PC | | Original | | | |
| Oxyd Magnum! Gold Edition | PC | | Game-Pack 3 | | 80227 | |
| Oxide Oxyde | PC | | Dynamite | | DE-006 | |
| The Oxfordshire Golf Club | PC | | Original | | EAE05101006D | |
| Owlboy (Game Disc) | PC | 0.0.6152.604 | IndieBox | | | |
| Overwatch | PC | | Origins Edition | | 052429 | |
| Overlord: Raising Hell | PC | 1.3 | Original | | | |
| Overlord: Raising Hell | PC | 1.3 | Original | | MOVLRCDEU00 | |
| Overlord II | PC | 1.0 | Original | | MOVL2CDUS00 | |
| Overlord II | PC | | Preview Code | | | |
| Overlord II | PC | | Original | | | |
| Overlord II | PC | | Original | | MOVL2CDEU00 | |
| Overlord | PC | 1.0 | Original | | MOVL1CDFC00 | |
| Overlord BGamer 153 (Side A) | PC | | Covermount | | | |
| Overlord | PC | 1.2 | Original | | MOVL1CDPL00 (DVD), POVL1CDPL03 (Box) | |
| Overlord | PC | | Original | | MOVL1CDEU00 | |
| OverKill | PC | | ROMWARE | | ROM 10 007 | |
| Overclocked: Una Storia di Violenza | PC | 1.1 | Original | | | |
| Overboard! | PC | | Dice | | DCG 005752, DMM 005776 | |
| Over Load | PC | | | | | |
| Over 350 Solitaire Games | PC | | Original | | | |
| Over 350 Jigsaw Puzzles | PC | | Original | | 012163 | |
| Over 200 Programs for Windows STG Computers LTD Windows Extra CD-ROM | PC | | Original | | | |
| Over 1000 Games: The Complete Encyclopedia of Games: Volume II (Disc 2) Over 1000 Games Volume 2 | PC | | Original | | | |
| Over 1000 Games: The Complete Encyclopedia of Games: Volume II (Disc 1) Over 1000 Games Volume 2 | PC | | Original | | | |
| Ovech'i bega Овечьи бега | PC | 1.0 | Original | | | |
| Outwars (Disc 2) | PC | 1.0 | Original | | 0298 Part No. X03-57509 | |
| Outwars (Disc 1) | PC | 1.0 | Original | | 0298 Part No. X03-63527 | |
| Outwars (Disc 2) | PC | 1.0 | Original | | 0398 Artikelnr. X00-14040 DE | |
| Outwars (Disc 1) | PC | 1.0 | Original | | 0398 Artikelnr. X00-14039 DE | |
| OutRun 2006: Coast 2 Coast (Disc 2) | PC | | Original | | | |
| OutRun 2006: Coast 2 Coast (Disc 1) | PC | | Original | | | |
| OutRun 2006: Coast 2 Coast | PC | | Top Games | | SEGA-PC029 | |
| OutRun 2006: Coast 2 Coast | PC | | GSP White Label: Reload | | 1673A | |
| OutRun 2006: Coast 2 Coast | PC | | White Label | | 1673A | |
| Outrage | PC | | Original | | | |
| Outpost 2: Divided Destiny | PC | 1.2.0.5 | Original | | | |
| Outpost 2: Divided Destiny | PC | 1.0 | Original | | S0011246 | |
| Outpost 2: Divided Destiny | PC | | SierraOriginals | | | |
| Outpost 2: Destini Sospesi | PC | 1.0 | Covermount | | | |
| Outpost | PC | 1.1 | Rerelease | | S725431 | |
| Outpost | PC | 1.51 | Schweinepreise | | S390122CZ12ZZ | |
| Outpost | PC | | SierraOriginals | | S4941220Z12Z2 | |
| Outpost | PC | | Original | | S 390121012ZZZ | |
| Outpost | PC | | Original | | S390021012ZZ2 | |
| Outlive | PC | 1.01 | Original | | | |
| Outlaws: Die Gesetzlosen (Disc 2) | PC | 1.1.1 | Original | | | |
| Outlaws: Die Gesetzlosen (Disc 1) | PC | 1.1.1 | Original | | | |
| Outlaws: Cidade Sem Lei (Disc 2) | PC | 2.0 | Original | | 0806.06.0 | |
| Outlaws: Cidade Sem Lei (Disc 1) | PC | 2.0 | Original | | 0806.05.0 | |
| Outlaws (Disc 2) | PC | 2.0 | Rerelease | | 9511831 | |
| Outlaws (Disc 2) | PC | 1.0 Build 3 | Bundle Version Diamond OEM | | 644431 | |
| Outlaws (Disc 1) | PC | 2.0 | Rerelease | | 9511830 | |
| Outlaws (Demonstration Program) | PC | Demo 1.0 CD Build 3 | Demo | | 644230 | |
| Outlaws (Disco 1) | PC | 1.0 | LucasArts Classic | | 41175.101.IT | |
| Outlaws (Disco 2) | PC | 1.0 | LucasArts Classic | | 41175.102.IT | |
| Outlaws (Disc 2) | PC | 1.1 | Rerelease | | | |
| Outlaws (Disc 1) | PC | 1.1 | Rerelease | | | |
| Outlaws (Disc 2) | PC | 2.0 | Collection LucasArts | | | |
| Outlaws (Disc 1) | PC | 2.0 | Collection LucasArts | | | |
| Outlaw Racers | PC | | Sold Out Software | | | |
| Outlaw Golf | PC | | Original | | RM-OUTGOLF-UK | |
| Outlast: A Reading for Information Game | PC | | Original | | HH824 | |
| The Outforce | PC | 1.0.0.0 | Original | | | |
| Outer Ridge | PC | 1.0 | Original | | SPI004 | |
| 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 | |
| Outcast (Disc 2) | PC | | Original | | 42831-9110TC | |
| Outcast (Disc 3) | PC | | Limitierte Sonderausgabe | | OUTCAPC520/A3 | |
| Outcast (Disc 2) | PC | | Limitierte Sonderausgabe | | OUTCAPC520/A2 | |
| Outcast (Disc 2) | PC | | Play the Games Vol. 3 | | | |
| Outcast (Disc 1) | PC | | Play the Games Vol. 3 | | | |
| Outcast (Disc 1) | PC | | Limitierte Sonderausgabe | | OUTCAPC520/A1 | |
| Outcast (Disc 1) | PC | | Original | | OUTCAPC52F/A1 | |
| Outburst | PC | | Classic Value Series | | Product# 99043 | |
| Outbreaker | PC | | Original | | | |
| Out of This World | PC | | Valueware | | CD-ICD-142-0 | |
| Out of This World | PC | | Rerelease | | CD-MMC-023-0 | |
| Ouro e Glória: O Caminho para El Dorado | PC | | Original | | 906.02.0 | |
| Our Worst Fears: Die Blumen des Todes | PC | | Original | | | |
| Oujisama Lv1 王子さまLv1 | PC | | Original | | | |
| Ougon Musou Kyoku Cross 黄金夢想曲 CROSS | PC | 2.00 | Original | | | |
| Oudou Aniki 王道兄貴 | PC | 1.20b | Original | | | |
| Otverzhennye: Tajna temnoj rasy (Disc 2) Отверженные: Тайна темной расы | PC | | 1C: Igrushki | | SNOW OT21 0110 IR | |
| Otto's Ottifanten | PC | | Original | | | |
| 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 | |
| Otome Koigokoro Prister 乙女恋心プリスター体験版 | PC | | Taikenban | | | |
| Othello CD-ROM | PC | | Original | | | |
| Othello | PC | | Original | | 99011 | |
| Othelanian Wars オセラニアン・ウォーズ | PC | | Original | | | |
| Otchayannye domoxozyajki (Disc 3) (Igrovoj disk) Отчаянные домохозяйки | PC | | Original | | | |
| Otchayannye domoxozyajki (Disc 2) (Ustanovochnyj disk) Отчаянные домохозяйки | PC | | Original | | | |
| Otchayannye domoxozyajki (Disc 1) (Ustanovochnyj disk) Отчаянные домохозяйки | 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 | | | |
| Ostrich Runner | PC | | Microforum | | | |
| Osterspiele-Box Oster Spielebox | PC | | Original | | | |
| Ost-Indskaya kompaniya: Zolotoe izdanie Ост-Индская компания: Золотое издание | PC | | Original | | | |
| Osobennosti nacional'nogo razvoda (Disc 2) Особенности национального развода | PC | | Original | | | |
| Osobennosti nacional'nogo razvoda (Disc 1) Особенности национального развода | PC | | Original | | | |
| Osef Minei Mischakim אוסף מיני משחקים | PC | | Original | | | |
| Oscar Wilde's The Selfish Giant | PC | 2.10 | Original | | MQ 13-004-144 | |
| Oscar the Balloonist: Discovers the Farm 小小探險家奧斯卡 農場奇遇記 | PC | | Original | | | |
| Oscar der Ballonfahrer und die Geheimnisse des Waldes | PC | | | | | |
| Oscar | PC | | Golden Zone | | | |
| Osananajimi wa Pet Yakuza! 幼なじみはペットヤクザ!体験版 | PC | | Taikenban | | | |
| Osaka Ennichi 大阪緣日 | PC | | Original | | OE-V1.00 | |
| Osada Avalona (Disc 2) Осада Авалона | PC | | | | | |
| Osada Avalona (Disc 1) Осада Авалона | PC | | | | | |
| Ortofrajda | PC | | | | | |
| Oro Negro: Juego de Guerra y Estrategia | PC | | Covermount | | | |
| Oro e Gloria: La Strada per El Dorado | PC | | Covermount | | | |
| Orly's Draw-A-Story | PC | | Original | | | |
| Orly Pervoj mirovoj Орлы Первой мировой | PC | 02.19.07 | Original | | | |
| The Orion Conspiracy | PC | 1.01 | Original | | | |
| Orion Burger | PC | | Original | | | |
| Orion Burger | PC | | Abenteuer Doppelpack: Premier Collection | | MOBRLPGE72 | |
| 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 | | | |
| Original War (Disc 2) | PC | 1.02 | Covermount | | | |
| Original War (Disc 2) | PC | 1.02 | Original | | CD-W95-V006-IT2 | |
| Original War (Disc 1) | PC | 1.02 | Covermount | | | |
| Original War (Disc 1) | PC | 1.02 | Original | | CD-W95-V006-IT1 | |
| Original War (Disc 2) | PC | | Original | | | |
| Original War (Disc 1) | PC | | Original | | | |
| The Original Mulan 花木兰 | PC | | 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 | |
| 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 | 1.1 | Original | | #HCD606 | |
| The Oregon Trail | PC | 1.0 | Original | | | |
| Oregon Trail II + Logic Quest | PC | 1.2/1.0 | Original | | | |
| Oregon Trail II | PC | 1.32 | Rerelease | | #HCD744CE-CD | |
| Oregon Trail II | PC | 1.3 | Smart Saver | | 0TT744AE-CD | |
| Oregon Trail II | PC | 1.0 | Original | | | |
| 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 | 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 | Original | | OTF744AE-CD3 | |
| 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 | 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 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 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 | PC | 1.0 | DVD-ROM | | ORG811AE-DVD | |
| Ore no Shita de Agake 俺の下であがけ | PC | System3.9 Ver.5.43 | Original | | ALB-005 | |
| 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) 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 | |
| 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 | | | |
| The Orange Box (Disc 2) | PC | | Original | | VAD07705811D2 | |
| The Orange Box (Disc 1) | PC | | Original | | VAD07705811D | |
| Optimum Resource Sampler | PC | | Rerelease | | | |
| Optimum Resource Sampler | PC | | Original | | | |
| Opsys | PC | | Original | | | |
| 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: Książe Kaspian | PC | | Covermount | | | |
| 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) | PC | | Bundle Version Micro-Star International OEM | | CD-W581995-MSYZ1, FXX08903223D1 | |
| The Operative: No One Lives Forever (Disc 2) | PC | 1.004 | Game of the Year Edition | | S0025037 | |
| The Operative: No One Lives Forever (Disc 2) | PC | 1.0 | Original | | FXX08903223D2 | |
| 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 (Xplosiv) | | EI-1685-2 | |
| The Operative: No One Lives Forever (Disc 1) | PC | 1.004 | Game of the Year Edition (Xplosiv) | | EI-1685-1 | |
| The Operational Art of War: Century of Warfare | PC | | Original | | | |
| The Operational Art of War II: 1956-2000 The Operational Art of War II: Bewaffnete Konflikten | PC | | Original | | | |
| The Operational Art of War II | PC | 1.01.02 | Xplosiv | | EI-1259-3 | |
| Operation: Surgery Has Never Been so Silly! | PC | | Sold Out Software | | | |
| Operation: Surgery Has Never Been so Silly! | PC | | Replay Kids | | OPERPCREGB/A | |
| Operation Thunderstorm | PC | 1.0 | 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 Neptun | PC | 1.2 | Original | | ONT844AW-CD | |
| Operation Mittelmeer | PC | | Original | | | |
| Operation Flashpoint: Soprotivlenie Operation Flashpoint: Сопротивление | PC | 1.85 | | | | |
| Operation Flashpoint: Red River | PC | | Original | | MOFP3CDUS00 | |
| Operation Flashpoint: Red River | PC | | Kakaku Kaiteihan | | FBG028W000A10 | |
| Operation Flashpoint: Red River | PC | 1.0 | Original | | MOFP3CDEU00 | |
| Operation Flashpoint: Gold Upgrade Operace Flashpoint: Gold Upgrade | PC | | Original | | | |
| Operation Flashpoint: Dragon Rising | PC | | Original | | MOFP2CDEU00 | |
| Operation Flashpoint: Dragon Rising | PC | 1.0 | Original | | MOFP2CDEU00 | |
| Operation Flashpoint: Cold War Crisis | PC | | Playable Demo | | POPFCDUS40 | |
| Operation Flashpoint: Cold War Crisis | PC | 1.46 | Sold Out Software | | | |
| Operation Flashpoint: Cold War Crisis | PC | 1.46 | Sold Out Software | | | |
| Operation Flashpoint: Cold War Crisis | PC | 1.0 | Original | | MOPFCDEU00 | |
| Operation Europe: Path to Victory 1939-45 | PC | | Original | | | |
| Operation Body Count: One Level Preview | PC | | Original | | | |
| Operation Body Count | PC | | Original | | | |
| Operation Barbarossa: The Struggle for Russia | PC | | Original | | | |
| Operation | PC | | General Mills | | AM0703R71 | |
| Operation | PC | | General Mills | | | |
| 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 "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 | | | |
| 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 | | | |
| 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 オペラハウス プレビューディスク | PC | | Original | | | |
| Opera Fatal | PC | | Tandem | | 1444 | |
| Opera Fatal | PC | | Original | | | |
| Opening Night: Behind The Scenes | PC | 1.0 | Original | | #HCD646B | |
| Opening Night | PC | 1.0 | Original | | #HCD646A | |
| Open Season (Disc 3) | PC | 1.0 | Original | | 683131-CD3 | |
| Open Season (Disc 2) | PC | 1.0 | Original | | 683131-CD2 | |
| Open Season (Disc 1) | PC | 1.0 | Original | | 683131-CD1 | |
| Open Season (Disc 1) | PC | 1.00 | Original | | | |
| Open Season Boog & Elliot | PC | 1.0 | Demo | | | |
| Open Season (Disc 3) | PC | | Original | | 5004905-CD 3 | |
| Open Season (Disc 2) | PC | | Original | | 5004905-CD 2 | |
| Open Season (Disc 1) | PC | | Original | | 5004905-CD 1 | |
| Oozora ni Kodawarou! Minna no Kuukou 2 大空にこだわろう! みんなの空港2 | PC | | | | | |
| Onsen Ryokou Kakumei: Ich liebe dich.! 温泉旅行革命 ~Ich liebe dich.!~ | PC | 1.00 | Original | | RUCCA-003 | |
| Onsen de Takkyuu 温泉de卓球 | PC | | Original | | | |
| Onsalakorv | PC | | Original | | | |
| 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 | |
| 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 Fun: Entra anche tu nel mondo dei Videogames | PC | | | | | |
| OnlineGamez | PC | | | | | |
| Online G@mer n. 5: Juin/Juillet 2001 (Disc 1) | PC | | | | | |
| Onkel Alberts geheimnisvolles Notizbuch | 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 | | | |
| Onimusha 3: Demon Siege (Disc 3) | PC | | Original | | 683100-CD3 | |
| Onimusha 3: Demon Siege (Disc 2) | PC | | Original | | 683100-CD2 | |
| Onimusha 3: Demon Siege (Disc 1) | PC | | Original | | 683100-CD1 | |
| Onimusha 3 | PC | | Original | | 5004561 | |
| Onikiri-den 鬼斬伝 | PC | | Original | | ZEUS-00001 | |
| Onii-chan Jushin-chuu お兄ちゃん受信中 | PC | | Original | | | |
| 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 | | | |
| Onible'jd Ониблэйд | PC | | Original | | | |
| Oni no Kamen 鬼ノ仮面 | PC | 1.00 | Original | | | |
| Oni / 4x4 Evo Oni / 4x4 Evolution | PC | | Demo | | 12DC1-09GM03-11 | |
| Oni | PC | 1.0 | PC Best Buy | | 177588 | |
| Oni | PC | 1.00.000 | Original | | MTW-0390 | |
| Oni | PC | 1.0 | Covermount | | | |
| Oni | PC | 1.0 | Covermount | | | |
| Oni | PC | 1.0 | Original | | | |
| Onegai Countdown おねがいカウントダウン | PC | | Original | | YMH-0013 | |
| 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 | |
| One Step Beyond | PC | | Hit Squad: Regenerator | | | |
| One Must Fall: Battlegrounds | PC | 2090 | Original | | | |
| One Must Fall: Battlegrounds | PC | 2090 | Original | | | |
| One Must Fall 2097 | PC | 1.1 | Demo | | | |
| One Must Fall 2097 | PC | | Original | | EPOMF01 | |
| One Must Fall 2097 | PC | | Original | | EPOMF01 | |
| One Must Fall 2097 | PC | | Original | | | |
| One Must Fall 2097 One Must Fall | PC | | Rerelease | | D.L.: M-8684-97 | |
| One Must Fall 2097 | PC | | Demo: JukeBox Collection | | | |
| One Must Fall 2097 | PC | 2.1 | The Smile Edition | | CDR3016 | |
| One Must Fall 2097 One Must Fall 2097 CD-ROM | PC | 1.1 | ROMWARE | | ROM 10017 | |
| Ona: Sbornik e'roticheskix igr Она: Сборник эротических игр | PC | | Original | | 10-20999 | |
| On-Robot Он-Робот | PC | 1.14SB | 1C: Igrushki | | | |
| On the Ball: World Cup Edition | PC | 1.00 | Original | | | |
| On the Ball: League Edition | PC | 1.0 | Original | | | |
| On Air | PC | | Original | | BROWNIE 990201 | |
| OMSI: Der Omnibussimulator | PC | 1.04 | OMSI Bundle | | | |
| OMSI Add-on: Wien: Der Hochflurbus LU 200 | PC | 1.0 | OMSI Bundle | | | |
| Omnia Junior 3: Il Mondo degli Animali | PC | | Covermount | | SIAE1001PA | |
| Omnia Junior 2: Storia: Attività interattive | PC | | Covermount | | SIAE 0901PA | |
| Omnia Junior 1: Enciclopedia: Dizionario | PC | | Covermount | | SIAE 08A01PA | |
| Omikron: The Nomad Soul | PC | | Promo | | | |
| Omerta: City of Gangsters | PC | | Covermount | | G1DVD0215 | |
| The Omega Stone: Secrets of the Ancients (Disc 4) | PC | | Original | | OMSTENCD4 | |
| The Omega Stone: Secrets of the Ancients (Disc 3) | PC | | Original | | OMSTENCD3 | |
| The Omega Stone: Secrets of the Ancients (Disc 2) | PC | | Original | | OMSTENCD2 | |
| The Omega Stone: Secrets of the Ancients (Disc 1) | PC | | Original | | OMSTENCD1 | |
| 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 Soccer | PC | | CD-ROM Classic Collection 2 | | | |
| Olympic Soccer | PC | | Kixx | | | |
| Olympic Games: Atlanta 1996 | PC | | Original | | | |
| Olympiad Qiaosai 2 奧林匹亞橋賽2 | PC | | Original | | | |
| Ollo en de Reuzentomaat | PC | | CD-ROM Topper | | | |
| Olivers Äventyr: Drakens Förbannelse | PC | | Original | | 021120110 | |
| Olimpiada Zimowa 2002 Olimpijskie Zmagania 2002 | PC | | Original | | | |
| Oldtimer: Erlebte Geschichte Teil II | PC | | Original | | | |
| Old El Paso Recipes for Family Fun | PC | | Original | | | |
| Oktoberfest Wiesn-Gaudi | PC | 1.0 | Original | | | |
| Oksfordzka Encyklopedia Historii Świata. Tom II | PC | | Covermount | | SELL 0108 | |
| Okano Software Classics: Volume 2 | PC | | Original | | | |
| OIO: The Game: Enlarged | PC | | F*ckn' Best of Independent Games: Collection Vol. 1 | | | |
| Oil Tycoon 2 | PC | | Covermount | | | |
| Oil Tycoon 2 Oil Tycoon 2: Il Ritorno di una Leggenda | PC | | EXA Games | | EXAG020 | |
| Oil Tycoon 2 | PC | | Original | | | |
| Oil Tycoon | PC | 1.0 | Original | | | |
| Oil Rush | PC | | Original | | | |
| Oil Platform Simulator | PC | 1.0 | Original | | | |
| 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!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 | |
| Ognisty Podmuch: Fire Captain (Disc 2) (Dysk z Grą) | PC | | Covermount | | | |
| Ognisty Podmuch: Fire Captain (Disc 1) (Dysk Instalacyjny) | PC | | Covermount | | | |
| Ogallala: Das Kartenspiel für PC | PC | | Original | | ECD000799D 00031111-001 | |
| Oficery: Special'noe izdanie Офицеры: Специальное издание | PC | 1.18.2 | Original | | | |
| Offroad Extreme! Special Edition | PC | | Original | | | |
| Offroad Off-Road Redneck Racing | PC | | Original | | ECD 000592K | |
| Offroad Off-Road Redneck Racing | PC | | Original | | OFFPCCDML | |
| Official Lara Croft: Real Life '99 Lara: Character Images | PC | | Press Kit | | | |
| The Official Guide to The Daedalus Encounter: Companion Disc | PC | | Original | | | |
| Official Duke Nukem 3D Level Design Handbook | PC | | Original | | 1869-0 | |
| The Official Browser of Primagames.com | PC | | | | | |
| The Office | PC | | Original | | | |
| Offensive Offensive War: The Ultimate Strategical Combat Game | PC | | Covermount | | | |
| Offensive | PC | | Original | | | |
| Off-Road Redneck Racing | PC | | Original | | CD-C98-1259-0 | |
| Off Limits: Mizar | PC | | ROMWARE | | ROM 10120 | |