| Region | Title | System | Version | Edition | Languages | Serial | Status |
|---|
 | Oasis Road
オアシスロード | PSX | | Original |  | SLPS 01899 |  |
 | Oddworld: Abe's Exoddus (Disc 1) | PSX | | Original |  | SLES-01505 | |
| Oddworld: Abe's Exoddus (Disc 2) | PSX | | Original | | SLES-11505 | |
 | Oddworld: Abe's Oddysee | PSX | | Trade Demo |  | | |
| 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 | |
 | Official UK PlayStation Best Games Ever! | PSX | | | | SCED-03408 | |
| 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 | |
| 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 Express
お嬢様特急 | PSX | | Taikenban | | SLPM 80255 | |
| 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
オリンピックサッカー | PSX | | Original | | SLPS 00523 | |
| The Oni Taiji!!: Mezase! Nidaime Momotarou
Ｔｈｅ鬼退治！！ 目指せ！二代目桃太郎 | PSX | | Major Wave | | SLPM 86989 | |
| The Oni Taiji!!: Mezase! Nidaime Momotarou
Ｔｈｅ鬼退治！！ 目指せ！二代目桃太郎 | PSX | | Original | | SLPS 00089 | |
| Online Connection CD: For the PlayStation Game Console | PSX | | Beta Trial Version 1.0 | | LSP-150500 … | |
 | OPSM Best Ever Ever Games Demo | PSX | | Demo | | SCED-02851 | |
| OPSM Best Racing Game Ever | PSX | | | | SCED-02492 | |
| Option: Tuning Car Battle
Ｏｐｔｉｏｎ チューニングカーバトル | PSX | | Highlight-ban | | SLPM 80203 | |
| Option: Tuning Car Battle
Ｏｐｔｉｏｎ チューニングカーバトル | PSX | | Taikenban | | SLPM 80206 | |
| Option: Tuning Car Battle
オプション チューニングカーバトル | PSX | Rev 1 | PlayStation the Best | | SLPS 91037 | |
| Oracle no Houseki: Jewels of the Oracle
オラクルの宝石 Ｊｅｗｅｌｓ ｏｆ ｔｈｅ Ｏｒａｃｌｅ | PSX | | Original |   | SLPS 00240 | |
| Ore no Ryouri
俺の料理 | PSX | | Taikenban | | PAPX 90089 | |
| Ore no Ryouri
俺の料理 | PSX | | Taikenban | | PAPX 90084 | |
| Ore no Shikabane o Koete Yuke
俺の屍を越えてゆけ | PSX | | Tentou-you Movie Disc | | PCPX 96160 | |
| 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 | |
| Oro y Gloria: La Ruta hacia El Dorado | PSX | | Original | | SLES-03187 | |
| Osaka Naniwa Matenrou
大阪ナニワ摩天楼 | PSX | | Original | | SLPS 02013 | |
| Otenki Kororin
お天気ころりん | PSX | | Original | | SLPM 87047 | |
| 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 | |
| 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 | |
| Out Live: Be Eliminate Yesterday
アウトライブ Ｂｅ Ｅｌｉｍｉｎａｔｅ Ｙｅｓｔｅｒｄａｙ | PSX | | Original | | SLPS 00746 | |
| Over Drivin' II
オーバードライビンⅡ | PSX | | Original | | SLPS 00895 | |
| 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' IV
オーバードライビンⅣ | PSX | | Taikenban Disc | | SLPM 80437 | |
 | OverBlood | PSX | | Original | | SLES-00769 | |
| OverBlood
オーバーブラッド | PSX | | Major Wave | | SLPM 86641 | |
| OverBlood 2 (Disc 1) | PSX | | Original | | SLES-01879 | |
| OverBlood 2 (Disc 2) | PSX | | Original | | SLES-11879 | |
 | OverBlood 2 (Disc 2) | PSX | Rev 1 | Original | | SLES-12187 … | |
| OverBlood 2: The "East Edge" File
オーバーブラッド２ －Ｔｈｅ ＂Ｅａｓｔ Ｅｄｇｅ＂ Ｆｉｌｅ－ | PSX | | Premium Disc | | SLPM 80270 | |
| 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 | |
| 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 | |
| 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 | |
| Ocean Commander | PS2 | 1.01 | Original | | SLES-55047 | |
| Off Road | PS2 | 1.01 | Original |  | SLES-55032 | |
| Off-Road: Wide Open
Test Drive Off-Road: Wide Open | PS2 | 1.00 | Original | | SLES-50232 | |
| Offroad Extreme! | PS2 | 1.01 | Original | | SLES-52751 | |
| Offroad Extreme! Special Edition | PS2 | 1.00 | Original | | SLES-54109 | |
| Online Start-Up Disc 4.0: Broadband Only | PS2 | 1.01 | Bundled with PS2 | | PBPX 95248 | |
| 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 | |
| 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 | |
| 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: 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: 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: 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: 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: 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 | |
| Ougon Kishi Garo
黄金騎士 牙狼 | PS2 | 1.01 | Genteiban | | SLPS 20462 | |
| 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: The Aftermath
ObsCure: The Aftermath | PS2 | 1.00 | Original | | SLUS-21709 | |
 | Odin Sphere
오딘 스피어 | PS2 | 1.00 | Sample | | SCKA 20107 | |
| Odin Sphere | PS2 | 1.00 | Trade Demo | | SLUS-28065 | |
| Official Demo Disc 1: Retail Edition November 01 | PS2 | 1.04 | Kiosk Demo | | SCED-50615 | |
| 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 | |
| Ojousama Kumikyoku: Sweet Concert
お嬢様組曲 －Ｓｗｅｅｔ Ｃｏｎｃｅｒｔ－ | PS2 | 1.01 | Special Pack-ban | | SLPM 66726 | |
| Omoi no Kakera: Close to
想いのかけら ‐Ｃｌｏｓｅ ｔｏ‐ | PS2 | 1.02 | 2800 Collection | | SLPM 66385 | |
| One Piece: Grand Adventure
원피스: 그랜드 배틀 어드벤처 | PS2 | 1.00 | Original |  | SLKA 25388 | |
| One Piece: Grand Battle! Rush
원피스 그랜드배틀! RUSH | PS2 | 1.00 | Original | | SLKA 25299 | |
| 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
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 | |
| 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 | |
| Onimusha 2: Samurai's Destiny
鬼武者２ ＰＡＬ | PS2 | 1.00 | Beta | | SLES-50978 | |
| Onimusha Buraiden
鬼武者 無頼伝 | PS2 | 1.02 | Original | | SLPM 65411 | |
| Onimusha: Warlords | PS2 | 1.00 | Original | | SLPM 67507 | |
| Operator's Side
オペレーターズサイド | PS2 | 1.02 | Original | | SCPS 15039 | |
 | Opowieści z Narnii: Lew, Czarownica i Stara Szafa | PS2 | 1.00 | Original |  | SLES-53713 | |
| Orange Honey: Boku wa Kimi ni Koi shiteru
オレンジ♥ハニー 僕はキミに恋してる | PS2 | 1.02 | Shokai Genteiban | | SLPS 25766 | |
| Orange Pocket: Root
オレンジポケット ～リュート～ | PS2 | 1.02 | Original | | SLPM 65525 | |
| Orange Pocket: Root
オレンジポケット ～リュート～ | PS2 | 1.02 | Shokai Genteiban | | SLPM 65524 | |
| 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 Shita de Agake
俺の下で ＡＧＡＫＥ | PS2 | 1.01 | Original | | SLPS 25796 | |
| 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 | |
| Otome wa Boku ni Koishiteru
乙女はお姉さまに恋してる | PS2 | 1.05 | Original | | SLPM 66165 | |
| Otome-teki Koi Kakumei: Love Revo!!
乙女的恋革命★ラブレボ！！ | PS2 | 1.03 | Love Revo Box | | SLPM 66237 | |
| Ouka: Kokoro Kagayakaseru Sakura
桜華 ～心輝かせる桜～ | PS2 | 1.01 | Original | | SLPM 66406 | |
| Ouran Koukou Host Club
桜蘭高校ホスト部 | PS2 | 1.01 | Original | | SLPM 66738 | |
| OutRun 2006: Coast 2 Coast | PS2 | 1.01 | Review | | SLES-53998 | |
| Over the Monochrome Rainbow featuring Shogo Hamada | PS2 | 1.40 | Original | | SLPM 65271 | |
| 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 | |
| Of Orcs and Men | PS3 | 01.01 | Original | | BLES-01586 | |
| 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 | |
| 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 | |
| Oneechanbara Z: Kagura with NoNoNo!
お姉チャンバラZ～カグラ～ With NoNoNo! | PS3 | 01.03 | Original | | BLJS 10221 | |
| Operation Flashpoint: Dragon Rising
오퍼레이션 플래시포인트: 드래곤 라이징 | PS3 | 01.01 | Original | | BLKS 20157 | |
| The Orange Box | PS3 | 01.00 | Original | | BLES-00172 | |
| Order Up!! | PS3 | 01.04 | Original | | BLES-01470 | |
| Order Up!! | PS3 | 01.02 | Original | | BLUS-30904 | |
| 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 | |
| Overlord: Raising Hell | PS3 | 01.00 | Original | | BLES-00257 | |
| Onore no Shinzuru Michi o Yuke
己の信ずる道を征け | PSP | 1.01 | Original | | ULJM 05465 | |
| Ooedo Senryoubako
大江戸千両箱 | PSP | 1.01 | Original | | ULJM 05099 | |
| Oretachi no Sabage Portable
俺たちのサバゲー ＰＯＲＴＡＢＬＥ | PSP | 1.03 | Original | | ULJS 00170 | |
| OutRun 2006: Coast 2 Coast | PSP | 1.00 | Original | | ULKS 46087 | |
| OutRun 2006: Coast 2 Coast | PSP | 1.03 | Original | | ULUS-10064 | |
| 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 | |
| Oblachno, vozmozhny osadki v vide frikadelek
Облачно, возможны осадки в виде фрикаделек | PSP | 1.00 | Original | | ULES-01361 | |
| Omerta: Chinmoku no Okite: The Legacy
オメルタ ～沈黙の掟～ ＴＨＥ ＬＥＧＡＣＹ | PSP | 1.01 | Shokai Goukaban | | ULJM 06393 | |
| 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 | |
| Oumagatoki: Kaidan Romance
逢魔時 ～怪談ロマンス～ | PSP | 1.02 | Original | | ULJM 06039 | |
| 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 | SS | 1.000 | Ketteiban | | T-15901G | |
| Off-World Interceptor Extreme | SS | 1.000 | Original | | T-15908H | |
| Ojousama o Nerae!!
お嬢様を狙え！！ | SS | 1.003 | Original | | T-38101G | |
| 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 | |
| Olympic Soccer | SS | 2.000 | Original | | T-07904H-18 | |
| 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 | |
| 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 | |
| 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 | |
| Omoide ni Kawaru Kimi: Memories Off
想い出にかわる君 ～Ｍｅｍｏｒｉｅｓ Ｏｆｆ～ | DC | 1.001 | Original | | T-19718M | |
| 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 | |
| Outtrigger | DC | 1.001 | Original | | MK-51102-50 | |
| Outtrigger
アウトトリガー | DC | 1.008 | Original | | HDR-0118 | |
| Outtrigger | DC | 1.003 | Original | | 51102 | |
| 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 | |
| One Piece: Grand Battle! Rush
ワンピース グラバト！ ラッシュ | GC | | Original | | DL-DOL-GOPJ-JPN | |
| Outlaw Golf | GC | | Original | | DL-DOL-GOFP-EUR-01 | |
| Obscure II
ObsCure II | WII | | Original | | RVL-ROBP-EUR | |
| Obscure: The Aftermath
ObsCure: The Aftermath | WII | | Beta | | | |
| Obscure: The Aftermath
ObsCure: The Aftermath | WII | | Original | | RVL-ROBE-USA | |
| Ocean Commander | WII | | Original | | RVL-RQME-USA | |
| Octomania | WII | | Original | | RVL-RTKE-USA | |
| Odoru Made in Wario
おどる メイド イン ワリオ | WII | | Original | | RVL-RODJ-JPN | |
| Off Road | WII | | Original | | RVL-RO2P-EUR | |
| Offroad Extreme! | WII | | Original |  | RVL-ROFX-NOE | |
| Offroad Extreme! | WII | | Original | | RVL-ROFP-UKV-1 | |
| Offroad Extreme! Special Edition | WII | | Original | | RVL-ROFE-USA-B0 | |
| 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 | |
| Once Upon a Time | WII | Rev 1 | Original | | RVL-SUTE-USA-B0 | |
| 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 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: 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 | |
| Onechanbara: Bikini Zombie Slayers | WII | | Original | | RVL-RONE-USA | |
| Oneechanbara Revolution
お姉チャンバラ Ｒｅｖｏｌｕｔｉｏｎ | WII | | Original | | RVL-RONJ-JPN | |
 | De Ontdekker en het Mysterie van de Diamanten Scarabee
The Explorer and the Mystery of the Diamond Scarab | WII | | Original | | RVL-SODP-EUR-B0 | |
| Ookami
大神 | WII | | Original | | RVL-ROWJ-JPN-B0 | |
| Oops! Prank Party | WII | | Demo | | RVL-DPIE-USA-B0 | |
| Oops! Prank Party | WII | Rev 1 | Original | | RVL-SPIE-USA-B0 | |
| Open Season | WII | | Original |     | RVL-ROPP-EUR | |
| Open Season | WII | | Original | | RVL-ROPE-USA | |
| Opoona | WII | | Original | | RVL-RPOP-EUR | |
| Opoona
オプーナ | WII | | Original | | RVL-RPOJ-JPN | |
| Order Up! | WII | | Original | | RVL-ROXX-EUR | |
| Order Up! | WII | | Beta | | | |
| Order Up! | WII | | Original | | RVL-ROXE-USA | |
| Order Up! | WII | Rev 1 | Original | | RVL-ROXE-USA | |
| Order Up! | WII | | Original | | RVL-ROXP-UKV | |
| Osouji Sentai Clean Keeper
お掃除戦隊くりーんきーぱー | WII | | Original | | RVL-RC5J-JPN | |
| Ougon no Kizuna
黄金の絆 | WII | | Original | | RVL-RK7J-JPN | |
| Our House: Party! | WII | | Original | | RVL-SHPE-USA-B0 | |
| Ousama Monogatari
王様物語 | WII | | Beta | | | |
| Ousama Monogatari
王様物語 | WII | | Original | | RVL-RO3J-JPN-B0 | |
| Outdoor Action Double Pack
Outdoor Action Double Pack: Remington Great American Bird Hunt and Shimano Xtreme Fishing | WII | | Original | | RVL-SFHE-USA-B0 | |
| Overlord: Dark Legend | WII | | Original | | RVL-ROAP-EUR | |
| Overlord: Dark Legend | WII | | Original | | RVL-ROAE-USA | |
| 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 | |
 | O Xephteris Taxideuei stin Ellada
Ο Ξεφτέρης ταξιδεύει στην Ελλάδα | PC | | Original |  | | |
| O! Rety! Psoty Dudusia Wesołka | PC | | Playada Gier | | P_20265_03A_PL | |
 | O.R.B: Off-World Resource Base | PC | | Covermount | | | |
| O.R.B: Off-World Resource Base | PC | 1.0 | Original | | 22434CD | |
| O.R.B.: Orbital'nye Resursnye Bazy
О.Р.Б.: Орбитальные Ресурсные Базы | PC | 1.03 | 1C: Kollekciya igrushek | | | |
| Obbligato (Taikenban CD-ROM)
オブリガート 体験版CD-ROM | PC | | Demo | | | |
 | Oblivious Garden: Carmina Burana (Disc 2) (Music Disc) | PC | | Standard Edition |  | | |
| Obrońca | PC | | FajnaGra.pl | | | |
| 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 (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 | |
| 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/Infogrames Show Case December 1997 | PC | | | | | |
| Oceans Below | PC | | Bundle Version OEM | | RVL 13-004-059 Rev. A / 2198610-590002 / I 083100 | |
| Ochazukenori: Kaiki!! Mushi Danshaku no Yakata
御茶漬海苔 怪奇！！蟲男爵の館 | PC | | Original | | | |
| Oddworld: Abe's Exoddus (CD Abspielen) | PC | 2.0 | Original | | | |
| Oddworld: Abe's Exoddus (CD Installieren) | PC | 2.0 | Original | | | |
 | Oddworld: Abe's Exoddus (Disc 1) | PC | 1.0 | Covermount | | | |
| Oddworld: Abe's Exoddus (Disc 2) | PC | 1.0 | Covermount | | | |
| Oddworld: Abe's Exoddus (Installatie Disk) | PC | 2.0 | Budget | | MMICDR 5280 | |
| Oddworld: Abe's Oddysee | PC | 2.0 | Covermount | | IB2G-ODDI5 | |
| Oddworld: Abe's Oddysee | PC | 2.0 | Channelware | | 04-15303 | |
| Oddworld: L'Odyssée d'Abe | PC | | Original | | IB2G-ODDF5 | |
| 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 |  | | |
| ODS Air Explorer | PC | 5.0r134 | Teacher's Edition | | | |
| ODS Air Explorer | PC | 5.0r134 | Teacher's Edition | | | |
| ODS Amazing Art Corner | PC | 5.0r134 | Teacher's Edition | | | |
| ODS Carnival Math | PC | 5.0r134 | Teacher's Edition | | | |
| ODS Carnival Math | PC | 5.0r134 | Teacher's Edition | | | |
| 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 | | | |
| 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 | |
| Off Limits: Cassiopeia | PC | | ROMWARE | | ROM 10100 | |
| Off Limits: Mizar | PC | | ROMWARE | | ROM 10120 | |
| Off-Road Redneck Racing | PC | | Original | | CD-C98-1259-0 | |
| Offensive
Offensive War: The Ultimate Strategical Combat Game | PC | | Covermount | | | |
| The Official Browser of Primagames.com | PC | | | | | |
 | The Official Guide to The Daedalus Encounter: Companion Disc | PC | | Original | | | |
| Official Lara Croft: Real Life '99 Lara: Character Images | PC | | Press Kit | | | |
| Offroad
Off-Road Redneck Racing | PC | | Original | | OFFPCCDML | |
| Offroad
Off-Road Redneck Racing | PC | | Original | | ECD 000592K | |
| Offroad Extreme! Special Edition | PC | | Original | | | |
| Ogallala: Das Kartenspiel für PC | PC | | Original | | ECD000799D 00031111-001 | |
| Ognisty Podmuch: Fire Captain (Disc 1) (Dysk Instalacyjny) | PC | | Covermount | | | |
| Ognisty Podmuch: Fire Captain (Disc 2) (Dysk z Grą) | PC | | Covermount | | | |
| 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 | |
| Oil Platform Simulator | PC | 1.0 | Original | | | |
| 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 | | | |
| Okano Software Classics: Volume 2 | PC | | Original | | | |
| Oksfordzka Encyklopedia Historii Świata. Tom II | PC | | Covermount | | SELL 0108 | |
| Oktoberfest Wiesn-Gaudi | PC | 1.0 | Original | | | |
| Old El Paso Recipes for Family Fun | PC | | Original | | | |
| Oldtimer: Erlebte Geschichte Teil II | PC | | Original | | | |
 | Olivers Äventyr: Drakens Förbannelse | PC | | Original | | 021120110 | |
 | Ollo en de Reuzentomaat | PC | | CD-ROM Topper | | | |
| Ollo in the Sunny Valley Fair | PC | | Original | | | |
| Olympic Soccer | PC | | Kixx | | | |
| Olympic Soccer | PC | | CD-ROM Classic Collection 2 | | | |
| Omar Sharif on Bridge | PC | | Valueware | | CD-ICD-148-0 | |
| 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 | |
| Omikron: The Nomad Soul | PC | | Promo | | | |
| 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 | |
| On Air | PC | | Original | | BROWNIE 990201 | |
| On the Ball: World Cup Edition | PC | 1.00 | Original | | | |
| On-Robot
Он-Робот | PC | 1.14SB | 1C: Igrushki | | | |
| Ona: Sbornik e'roticheskix igr
Она: Сборник эротических игр | PC | | Original | | 10-20999 | |
| One Must Fall 2097
One Must Fall 2097 CD-ROM | PC | 1.1 | ROMWARE | | ROM 10017 | |
| One Must Fall 2097 | PC | 2.1 | The Smile Edition | | CDR3016 | |
| One Must Fall: Battlegrounds | PC | 2090 | Original | | | |
| One Must Fall: Battlegrounds | PC | 2090 | Original | | | |
| 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 | |
| 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: 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 | | | |
| Onkel Alberts geheimnisvolles Notizbuch | PC | | Original | | | |
| Online G@mer n. 5: Juin/Juillet 2001 (Disc 1) | PC | | | | | |
| Only Fun: Entra anche tu nel mondo dei Videogames | PC | | | | | |
| 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 | |
| Only You: Sekai no Namida to Shoujo no Hanashi: Prelude
Ｏｎｌｙ Ｙｏｕ －世界の涙と少女のハナシ－ Ｐｒｅｌｕｄｅ | PC | 1.00 | Trial Edition version:share II | | | |
| Onsalakorv | PC | | Original | | | |
| Onsen Ryokou Kakumei: Ich liebe dich.!
温泉旅行革命 ～Ｉｃｈ ｌｉｅｂｅ ｄｉｃｈ．！～ | PC | 1.00 | Original | | RUCCA-003 | |
| Oozora ni Kodawarou! Minna no Kuukou 2
大空にこだわろう！ みんなの空港２ | PC | | | | | |
| Opera Fatal | PC | | Tandem | | 1444 | |
| 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 | | | |
| 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 "X" ili novye piklyucheniya Shuricha (Disc 1)
Операция "Х" или новые приключения Шурича | PC | | 1C: Kollekciya igrushek | | | |
| 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 | | | |
| 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 | | | |
 | Operation | PC | | General Mills | | | |
| Operation | PC | | General Mills | | AM0703R71 | |
| Operation Barbarossa: The Struggle for Russia | PC | | Original | | | |
| Operation Body Count | PC | | Original | | | |
| Operation Body Count: One Level Preview | PC | | Original | | | |
| Operation Europe: Path to Victory 1939-45 | PC | | Original | | | |
| Operation Flashpoint: Cold War Crisis | PC | 1.0 | Original | | MOPFCDEU00 | |
| 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 | | Playable Demo | | POPFCDUS40 | |
 | Operation Flashpoint: Gold Upgrade
Operace Flashpoint: Gold Upgrade | PC | | Original |  | | |
| Operation Flashpoint: Soprotivlenie
Operation Flashpoint: Сопротивление | PC | 1.85 | | | | |
| Operation Mittelmeer | PC | | Original | | | |
| Operation Neptun | PC | 1.2 | Original | | ONT844AW-CD | |
| Operation Neptune | PC | 1.22 | Original | | ONT744CE-CD | |
| Operation Neptune | PC | 1.23 | The ClueFinders: Math Ages 9-12 | | ONT744EE-CD | |
| Operation Neptune + Reader Rabbit 2 Deluxe! + Ultimate Writing & Creativity Center
The Learning Company 3-in-1 | PC | | | | | |
| Operation Omega | PC | | Original | | 7-20286-92175-1 | |
| Operation: Surgery Has Never Been so Silly! | PC | | Replay Kids | | OPERPCREGB/A | |
| Operation: Surgery Has Never Been so Silly! | PC | | Sold Out Software | | | |
| The Operational Art of War II | PC | 1.01.02 | Xplosiv | | EI-1259-3 | |
| 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 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 | |
| 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 | 1.0 | Original | | FXX08903223D2 | |
| 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 | | 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 | |
| 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 | | Rerelease | | | |
| Optimum Resource Sampler | PC | | Original | | | |
| Orchid Technology Kelvin MPEG Software Catalog | PC | | | | | |
| Orda: Severnyj veter
Орда: Северный ветер | PC | | Original | | | |
| Ore no Shita de Agake
俺の下であがけ | PC | System3.9 Ver.5.43 | Original | | ALB-005 | |
| 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 | 1.2a | Bundle Version Compaq Presario OEM | | | |
| 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 2) | PC | 1.2 | Original | | OTA744BE-CD2 | |
| 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 3) | PC | | Original | | OTA744AE-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 | 1.3 | The Learning Company | | OAE744BE-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 2) | PC | 1 | Rerelease | | OTF744CE-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 | |
| 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 | 1.01E | Enhanced Education Version | | 480599-CD | |
| Oregon Trail II | PC | 1.0 | Original | | | |
| Oregon Trail II | PC | 1.3 | Smart Saver | | 0TT744AE-CD | |
| Oregon Trail II | PC | 1.32 | Rerelease | | #HCD744CE-CD | |
| 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 | |
| The Oregon Trail | PC | 1.21 | | | | |
| The Oregon Trail | PC | 1.22 | Smart Saver | | ORT844AE-CD | |
| The Oregon Trail | PC | 3.0.1 | Slash | | CDRM1239790 | |
| The Oregon Trail: Classic Edition | PC | | SoftKey | | POT144EE-CD | |
| The Oregon Trail: Classic Edition | PC | | SoftKey | | POT144BE-CD | |
| The Oregon Trail: Classic Edition | PC | 3.0.1 | SoftKey | | POT144CE-CD | |
| Orgazumi (Disc 1)
オーガズミー | PC | | Original | | FCG013 | |
| Orgazumi (Disc 2)
オーガズミー | PC | | Original | | FCG014 | |
| The Original Mulan
花木兰 | PC | | Original | | | |
| Original War (Disc 1) | PC | | Original | | | |
| Original War (Disc 2) | PC | | Original | | | |
| 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 | 1.02 | Covermount | | | |
| Original War (Disc 2) | PC | 1.02 | Original | | CD-W95-V006-IT2 | |
| Original War (Disc 1) (Install Disc)
オリジナル ウォー | PC | 1.02 | Original | | | |
| Original War (Disc 2) (GameDisc)
オリジナル ウォー | PC | 1.02 | Original | | | |
| Orion Burger | PC | | Abenteuer Doppelpack: Premier Collection | | MOBRLPGE72 | |
| Orion Burger | PC | | Original | | | |
| The Orion Conspiracy | PC | 1.01 | Original | | | |
| Orly Pervoj mirovoj
Орлы Первой мировой | PC | 02.19.07 | Original | | | |
| Orly's Draw-A-Story | PC | | Original | | | |
| Oro e Gloria: La Strada per El Dorado | PC | | Covermount | | | |
 | Oro Negro: Juego de Guerra y Estrategia | PC | | Covermount | | | |
| Ortofrajda | PC | | | | | |
| Oscar | PC | | Golden Zone | | | |
| Oscar der Ballonfahrer und die Geheimnisse des Waldes | PC | | | | | |
 | Oscar the Balloonist: Discovers the Farm
小小探險家奧斯卡 農場奇遇記 | PC | | Original | | | |
| Oscar Wilde's The Selfish Giant | PC | 2.10 | Original | | MQ 13-004-144 | |
| Osobennosti nacional'nogo razvoda (Disc 1)
Особенности национального развода | PC | | Original | | | |
| Osobennosti nacional'nogo razvoda (Disc 2)
Особенности национального развода | PC | | Original | | | |
| Osterspiele-Box
Oster Spielebox | PC | | Original | | | |
| Ostrich Runner | PC | | Microforum | | | |
| Ostrov e'rotiki
Остров эротики | PC | | Original | | | |
| Ostrov Nanda
Остров Нанда | PC | 1.000 | Original | | | |
| Ot zakata do rassveta
От заката до рассвета | PC | | 1C: Igroteka | | | |
| Othelanian Wars
オセラニアン・ウォーズ | PC | | Original | | | |
| Othello CD-ROM | PC | | Original | | | |
| Otome Koigokoro Prister
乙女恋心プリスター体験版 | PC | | Taikenban | | | |
| 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 | |
| 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 | |
| Otverzhennye: Tajna temnoj rasy (Disc 2)
Отверженные: Тайна темной расы | PC | | 1C: Igrushki | | SNOW OT21 0110 IR | |
| Our Worst Fears: Die Blumen des Todes | PC | | Original | | | |
 | 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 | PC | | Rerelease | | CD-MMC-023-0 | |
| Outbreaker | PC | | Original | | | |
| Outburst | PC | | Classic Value Series | | Product# 99043 | |
| 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 | |
| Outer Ridge | PC | 1.0 | Original | | SPI004 | |
| The Outforce | PC | 1.0.0.0 | Original | | | |
| Outlast: A Reading for Information Game | PC | | Original | | HH824 | |
| Outlaw Golf | PC | | Original | | RM-OUTGOLF-UK | |
| Outlaw Racers | PC | | Sold Out Software | | | |
| Outrage | PC | | Original | | | |
| OutRun 2006: Coast 2 Coast (Disc 1) | PC | | Original | | | |
| OutRun 2006: Coast 2 Coast (Disc 2) | PC | | Original | | | |
| Outwars (Disc 1) | PC | 1.0 | Original | | 0398 Artikelnr. X00-14039 DE | |
| Outwars (Disc 2) | PC | 1.0 | Original | | 0398 Artikelnr. X00-14040 DE | |
| 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: 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 | | | |
 | Over 350 Jigsaw Puzzles | PC | | Original | | 012163 | |
| Over 350 Solitaire Games | PC | | Original | | | |
| Over Load | PC | | | | | |
| Overboard! | PC | | Dice | | DCG 005752, DMM 005776 | |
| OverKill | PC | | ROMWARE | | ROM 10 007 | |
![2 and more dumps from original media [!]](/images/status/green.png "2 and more dumps from original media [!]")