Region | Title | System | Version | Edition | Languages | Serial | Status |
| Official PlayStation 2 Magazine-UK: Crime Special ops2m crime special | PS2 | 1.01 | | | SCED-51444 | |
| Official PlayStation Magazine Issue 09: September 2007 | PS3 | 01.00 | | | BCED - 000 … | |
| Official PlayStation Magazine Issue 10: October 2007 | PS3 | 01.00 | | | BCED-00086 | |
| Official PlayStation Magazine Issue 11: November 2007 | PS3 | 01.02 | | | BCED-00087 | |
| Official PlayStation Magazine Issue 12: December 2007 | PS3 | 01.00 | | | BCED-00088 | |
| Official PlayStation Magazine Issue 13: Christmas 2007 | PS3 | 01.00 | | | BCED-00181 | |
| Official PlayStation Magazine Issue 14: January 2008 | PS3 | 01.00 | | | BCED-00202 | |
| Official PlayStation Magazine Issue 15: February 2008 | PS3 | 01.01 | | | BCED-00203 | |
| Official PlayStation Magazine Issue 16: March 2008 | PS3 | 01.01 | | | BCED-00204 | |
| Official PlayStation Magazine Issue 17: April 2008 | PS3 | 01.00 | | | BCED-00205 | |
| Official PlayStation Magazine Issue 18: May 2008 | PS3 | 01.00 | | | BCED-00206 | |
| Official PlayStation Magazine Issue 19: June 2008 | PS3 | 01.00 | | | BCED-00207 | |
| Official PlayStation Magazine Issue 20: July 2008 | PS3 | 01.00 | | | BCED-00208 | |
| Official PlayStation Magazine Issue 21: August 2008 | PS3 | 01.00 | | | BCED-00209 | |
| Official PlayStation Magazine Issue 22: September 2008 | PS3 | 01.01 | | | BCED-00210 | |
| Official PlayStation Magazine Issue 23: October 2008 | PS3 | 01.00 | | | BCED-00211 | |
| Official PlayStation Magazine Issue 24: November 2008 | PS3 | 01.01 | | | BCED-00212 | |
| Official PlayStation Magazine Issue 25: December 2008 | PS3 | 01.00 | | | BCED-00213 | |
| Official Xbox Magazine Game Disc 14 | XBOX | | Original | | IM-014 | |
| Olympic Games Olympic Games: Atlanta 1996 | PSX | | Original | | SLES-00110 | |
| Olympic Soccer | SS | 2.000 | Original | | T-7904H-09, T-7904H-50 | |
| One Piece: Pirate Warriors 2 | PS3 | 01.00 | Original | | BLES-01913 | |
| One Piece: Unlimited Cruise 2: Awakening of a Hero | WII | | Original | | RVL-RIUP-EUR-B0 | |
| One Piece: Unlimited World Red | PS3 | 01.00 | Original | | BLES-02020 | |
| Onimusha 2: Samurai's Destiny | PS2 | 1.00 | Original | | SLES-50978 | |
| Onimusha 3 | PS2 | 1.01 | Original | | SLES-51914 … | |
| Operation Flashpoint: Cold War Crisis | PC | 1.0 | Original, Gold Edition | | MOPFCDEU00 | |
| Operation Flashpoint: Dragon Rising | PS3 | 01.01 | Original, Promo | | BLES-00597 | |
| Operation Flashpoint: Dragon Rising | XBOX360 | | Original | | CM-2065 | |
| Operation Flashpoint: Gold Upgrade | PC | 1.30 | Original, Gold Edition | | MOFUCDEU00, MOFUCDUS00 | |
| Operation Flashpoint: Red River | PS3 | 01.01 | Original | | BLES-01171 | |
| Operation Flashpoint: Red River | XBOX360 | | Original | | CM-2104 | |
| Operation Flashpoint: Resistance | PC | 1.75 | Original | | MOFRCDEU00 | |
| Ori and the Blind Forest: Definitive Edition | PC | 5.3.2.9582331 | Limited Edition | | | |
| The Outfit | XBOX360 | | Original | | TQ-2002 | |
| OutRun 2006: Coast 2 Coast | PC | 1.0 | Original | | SEGA-PC029 | |
| OutRun 2006: Coast 2 Coast | PS2 | 1.02 | Original | | SLES-53998 | |
| OutRun 2006: Coast 2 Coast | PC | 1.00.0000 | Serie Maxima II | | SEGA-PC029 | |
| OutRun 2006: Coast 2 Coast | PC | | eXtra Klasyka XK HIT | | TS OCC PL | |
| OutRun 2006: Coast 2 Coast | XBOX | | Original | | SE-136 | |
| Outward | PC | | Day One Edition | | 1024669LAINT, 103699 | |
| Overlord II | PS3 | 01.02 | Original | | BLES-00580 | |
| Overlord II | XBOX360 | | Original | | CM-2057 | |
| Ookami: Zekkeiban 大神 絶景版 | PS3 | 00.00 | Original, PlayStation 3 the Best, PlayStation 3 the Best (Reprint) | | BLJM 55061 … | |
| Oracle no Houseki: Jewels of the Oracle オラクルの宝石 | SS | 1.004 | Original | | T-1511G | |
| Over G Fighters | XBOX360 | | Original | | TI-2001 | |
| The Operative: No One Lives Forever (Disc 1) | PC | 1.0 | Original | | FXX08903223D1 | |
| The Operative: No One Lives Forever (Disc 2) | PC | 1.0 | Original | | FXX08903223D2 | |
| Official Xbox Magazine Game Disc 04 | XBOX | | Original | | IM-004 | |
| Official Xbox Magazine Game Disc 11 | XBOX | | Original | | IM-011 | |
| Official Xbox Magazine Game Disc 17 | XBOX | | Original | | IM-017 | |
| Official Xbox Magazine Game Disc 18 | XBOX | | Original | | IM-018 | |
| Official Xbox Magazine Game Disc 19 | XBOX | | Original | | IM-019 | |
| Official Xbox Magazine Game Disc 30 | XBOX | | Original | | IM-030 | |
| Official Xbox Magazine Game Disc 32 | XBOX | | Original | | IM-032 | |
| Official Xbox Magazine Game Disc 33 | XBOX | | Original | | IM-033 | |
| Official Xbox Magazine Game Disc 34 | XBOX | | Original | | IM-034 | |
| Official Xbox Magazine Game Disc 38 | XBOX | | Original | | IM-038 | |
| Official Xbox Magazine Game Disc 39 | XBOX | | Original | | IM-039 | |
| Official Xbox Magazine Game Disc 42 | XBOX | | Original | | IM-042 | |
| Official Xbox Magazine Game Disc 43 | XBOX | | Original | | IM-043 | |
| Official Xbox Magazine Game Disc 44 | XBOX | | Original | | IM-044 | |
| Official Xbox Magazine Game Disc 46 | XBOX | | Original | | IM-046 | |
| Official Xbox Magazine Game Disc 01 | XBOX | | Original | | IM-001 | |
| Official Xbox Magazine Game Disc 02 | XBOX | | Original | | IM-002 | |
| Official Xbox Magazine Game Disc 03 | XBOX | | Original | | IM-003 | |
| Official Xbox Magazine Game Disc 05 | XBOX | | Original | | IM-005 | |
| Official Xbox Magazine Game Disc 07 | XBOX | | Original | | IM-007 | |
| Official Xbox Magazine Game Disc 08 | XBOX | | Original | | IM-008 | |
| Official Xbox Magazine Game Disc 09 | XBOX | | Original | | IM-009 | |
| Official Xbox Magazine Game Disc 10 | XBOX | | Original | | IM-010 | |
| Official Xbox Magazine Game Disc 12 | XBOX | | Original | | IM-012 | |
| Official Xbox Magazine Game Disc 13 | XBOX | | Original | | IM-013 | |
| Official Xbox Magazine Game Disc 14 | XBOX | | Original | | IM-014 | |
| Official Xbox Magazine Game Disc 15 | XBOX | | Original | | IM-015 | |
| Official Xbox Magazine Game Disc 16 | XBOX | | Original | | IM-016 | |
| Official Xbox Magazine Game Disc 52 | XBOX | | Original | | IM-210 | |
| Official Xbox Magazine Game Disc 53 | XBOX | | Original | | IM-212 | |
| Oddworld: Abe's Oddysee: New 'n' Tasty! | PS3 | 01.00 | Limited Edition | | BLUS-31621 | |
| Oddworld: Stranger's Wrath HD | PS3 | 01.00 | Original | | BLUS-31620 | |
| Obscure ObsCure | PS2 | 1.00 | Original | | SLUS 20777 | |
| Obscure: The Aftermath ObsCure: The Aftermath | PSP | 1.00 | Original, Test Sample | | ULUS-10484 | |
| OutRun 2006: Coast 2 Coast | PS2 | 1.01 | Original | | SLUS 21274 | |
| Official PlayStation 2 Magazine Demo 10 ops2m demo 10 | PS2 | 1.00 | | | SCED-50404 | |
| Official PlayStation 2 Magazine Demo 11 | PS2 | 1.00 | | | SCED-50460 | |
| Official PlayStation 2 Magazine Demo 14 | PS2 | 1.00 | | | SCED-50622 | |
| Official PlayStation 2 Magazine Demo 16 | PS2 | 1.00 | | | SCED-50736 | |
| Official PlayStation 2 Magazine Demo 17 | PS2 | 1.00 | | | SCED-50697 | |
| Official PlayStation 2 Magazine Demo 20 | PS2 | 1.00 | | | SCED-50699 | |
| Official PlayStation 2 Magazine Demo 21 | PS2 | 1.00 | | | SCED-50700 | |
| Official PlayStation 2 Magazine Demo 22 | PS2 | 1.10 | | | SCED-50701 | |
| Official PlayStation 2 Magazine Demo 24 | PS2 | 1.10 | | | SCED-51185 | |
| Official PlayStation 2 Magazine Demo 27 | PS2 | 1.00 | | | SCED-51319 | |
| Official PlayStation 2 Magazine Demo 28 | PS2 | 1.00 | | | SCED-51376 | |
| Official PlayStation 2 Magazine Demo 31 | PS2 | 1.03 | | | SCED-51566 | |
| Official PlayStation 2 Magazine Demo 33 | PS2 | 1.01 | | | SCED-51568 | |
| Official PlayStation 2 Magazine Demo 35 | PS2 | 1.02 | | | SCED-51570 | |
| Official PlayStation 2 Magazine Demo 37 | PS2 | 1.02 | | | SCED-51572 | |
| Official PlayStation 2 Magazine Demo 39 | PS2 | 1.00 | | | SCED-52037 | |
| Official PlayStation 2 Magazine Demo 40 | PS2 | 1.00 | | | SCED-51575 | |
| Official PlayStation 2 Magazine Demo 47 | PS2 | 1.01 | | | SCED-52087 | |
| Official PlayStation 2 Magazine Demo 52 | PS2 | 1.01 | | | SCED-52092 | |
| Official PlayStation 2 Magazine Demo 55 | PS2 | 1.00 | | | SCED-52120 | |
| Official PlayStation 2 Magazine Demo 9 | PS2 | 1.10 | | | SCED-50144 | |
| Official Xbox Magazine Game Disc 45 | XBOX | | Original | | IM-045 | |
| Das Offizielle Xbox-Magazin: Cover-DVD 09/2004 | XBOX | | Original | | IM-032 | |
| The Orange Box | PS3 | 01.00 | Original | | BLES-00171 | |
| Omega Boost オメガ・ブースト | PSX | | Original, Preview | | SCPS 10020 | |
| Operation Flashpoint: Red River | PS3 | 01.02 | Original, Codemasters the Best | | BLJM 60361 … | |
| Oshidashi Zintrick ~ ZinTricK 押し出しジントリック | NGCD | | Original | | ADCD-104 | |
| Otostaz オトスタツ | PS2 | 1.00 | Original | | SCPS 11024 | |
| O.D.T. | PSX | | Original | | SLES-01409 | |
| Oddworld: L'Exode d'Abe (Disc 1) | PSX | | Original | | SLES-01502 | |
| Oddworld: L'Exode d'Abe (Disc 2) | PSX | | Original | | SLES-11502 | |
| Oddworld: L'Odyssée d'Abe | PSX | | Original, Best of Infogrames | | SLES-00838 … | |
| Official PlayStation 2 Magazine Demo 34 | PS2 | 1.03 | | | SCED-51560 | |
| L'Open de Palm Springs | CDI | | Original, For Demonstration Only | | 812 0002 | |
| Outlaws (Disc 1) | PC | | M6 Multimedia | | M6IMM6 | |
| Outlaws (Disc 2) | PC | | M6 Multimedia | | M6IMM6 | |
| Obscure ObsCure | PS2 | 1.00 | Original | | SLES-52738 | |
| Official Xbox Magazine Game Disc 45 | XBOX | | Original | | IM-045 | |
| Official Xbox Magazine Game Disc 48 | XBOX | | Original | | IM-048 | |
| O.D.T. | PC | | Original | | | |
| Obsidian (Disc 1) | PC | | Original | | | |
| Obsidian (Disc 2) | PC | | Original | | | |
| Obsidian (Disc 3) | PC | | Original | | | |
| Obsidian (Disc 4) | PC | | Original | | | |
| Obsidian (Disc 5) | PC | | Original | | | |
| Oddworld: Abe's Exoddus (Disc 2) | PSX | | Original | | SLES-11503 | |
| Oddworld: Munch's Oddysee | XBOX | | Original, Classics | | MS-001 | |
| Official PlayStation 2 Magazine Demo 49 | PS2 | 1.01 | | | SCED-52076 … | |
| Official PlayStation 2 Magazine Germany Special 3/2005 ops2 ger special 3/2005 | PS2 | 1.00 | | | SCED-53938 | |
| Das Offizielle Xbox-Magazin: Cover-DVD 06/2003 | XBOX | | Original | | IM-017 | |
| Das Offizielle Xbox-Magazin: Cover-DVD 08/2006 | XBOX | | Original | | IM-226 | |
| Das Offizielle Xbox-Magazin: Cover-DVD 11/2003 | XBOX | | Original | | IM-022 | |
| Die Original Moorhuhn Jagd | PC | | Best of Moorhuhn | | | |
| Orion Burger | PC | | Gold Games 2 (CD 11) | | SPI 046 | |
| Outpost 2: Geteilte Bestimmung | PC | 1.0 | Original | | S0011248 | |
| Obscure ObsCure | PC | | Original | | 71902134 | |
| OnEscapee | ACD | | Original | | | |
| Oddworld: Abe's Exoddus (Disc 1) | PSX | | Original, Platinum | | SLES-01504 … | |
| Oddworld: Abe's Exoddus (Disc 2) | PSX | | Original, Platinum | | SLES-11504 … | |
| Open Kart | PC | | I Videogiochi del "Giornalino" | | | |
| Outcast (Disc 1) | PC | | Covermount | | | |
| Outcast (Disc 2) | PC | | Covermount | | | |
| Official Xbox Magazine Game Disc 24 | XBOX | | Original | | IM-024 | |
| Oda Nobunaga Den 織田信長伝 | PSX | | Original, Koei the Best | | SLPM 86337 … | |
| Odin Sphere オーディン・スフィア | PS2 | 1.02 | Original, PlayStation 2 the Best | | SLPM 66474 … | |
| Odo Odo Oddity おどおどおっでぃ | PSX | | Original | | SLPS 00754 | |
| Official Disc 2003 | PS2 | 1.01 | Taikenban | | PAPX 90507 | |
| Official Fan Book: Circadia: Special CD-ROM オフィシャルファンブック サーカディア | PSX | | Original | | SCZS 94106 | |
| Official Yarudora Fan Book: Double Cast: CD-ROM Special Data-shuu オフィシャルやるドラファンブック ダブルキャスト | PSX | | Original | | SCZS 94101 | |
| Official Yarudora Fan Book: Kisetsu o Dakishimete オフィシャルやるドラファンブック 季節を抱きしめて | PSX | | Original | | SCZS 94102 | |
| Official Yarudora Fan Book: Sampaguita オフィシャルやるドラファンブック サンパギータ | PSX | | Original | | SCZS 94103 | |
| Official Yarudora Fan Book: Yukiwari no Hana: CD-ROM Special Data-shuu オフィシャルやるドラファンブック 雪割りの花 | PSX | | Original | | SCZS 94104 | |
| Oh-chan no Oekaki Logic おーちゃんのお絵かきロジック | PSX | | Original, SunColle Best, Value 1500 | | SLPS 00093 … | |
| Oh-chan no Oekaki Logic 2 おーちゃんのお絵かきロジック2 | PSX | Rev 1 | SunColle Best, Value 1500 | | SLPS 02145 … | |
| Ojousama Express (Disc 1) お嬢様特急 | PSX | | Original | | SLPS 01495 | |
| Ojousama Express (Disc 1) お嬢様特急 | SS | 1.005 | Original | | T-27803G | |
| Ojousama Express (Disc 2) お嬢様特急 | PSX | | Original | | SLPS 01496 | |
| Ojousama Express (Disc 2) お嬢様特急 | SS | 1.005 | Original | | T-27803G | |
| Ojousama o Nerae!! お嬢様を狙え!! | SS | 1.002 | Original | | T-38101G | |
| Ojousama Sousamou お嬢様捜査網 | PC-FX | | Original | | FXNHE616 | |
| Okappari-ou 陸釣王 | PSX | | Original | | SLPS 01524 | |
| Olympia, Takasago: Virtua Pachi-Slot III オリンピア・高砂 バーチャ・パチスロⅢ | PSX | | Original | | SLPS 01386 | |
| Omakase! Savers おまかせ!退魔業 | SS | 1.002 | Original | | GS-9030 | |
| Omega Boost オメガ・ブースト | PSX | | Taikenban | | PAPX 90080 | |
| Omoide ni Kawaru Kimi: Memories Off 想い出にかわる君 -Memories Off- | PS2 | 1.01 | Original | | SLPS 25173 | |
| One ワン | PSX | | Original | | SLPS 01812 | |
| One Piece Mansion ワンピースマンション | PSX | | Taikenban | | SLPM 80617 | |
| One Piece Mansion ワンピースマンション | PSX | | Original | | SLPM 86837 | |
| One Piece: Grand Battle! 3 ONE PIECE ~グランド・バトル!3~ | GC | | Original | | DL-DOL-GOGJ-JPN | |
| One Piece: Grand Battle! 3 ONE PIECE グランドバトル!3 | PS2 | 1.02 | Original | | SLPS 25315 | |
| One Piece: Grand Battle! Rush ワン・ピース ~グラバト!ラッシュ~ | PS2 | 1.01 | Original | | SLPS 25473 | |
| One Piece: Kaizoku Musou ワンピース 海賊無双 | PS3 | 01.02 | Original, Treasure Box | | BLAS 50450 … | |
| One Piece: Kaizoku Musou 2 ワン・ピース ~海賊無双2~ | PS3 | 01.02 | Treasure Box | | BLJM 60572 | |
| One Piece: Pirates Carnival ワンピース パイレーツカーニバル | GC | | Original | | DL-DOL-GIPJ-JPN | |
| One Piece: Romance Dawn: Bouken no Yoake ワンピース ROMANCE DAWN 冒険の夜明け | PSP | 1.01 | Original | | ULJS 00550 … | |
| One Piece: Round the Land! ワンピース ランドランド! | PS2 | 1.01 | Original | | SLPS 25382 | |
| One Piece: Unlimited World R ワンピース アンリミテッドワールド R | PS3 | 01.01 | Original | | BLJS 10272 | |
| Ongaku Tkool: Kanadeeru 2 音楽ツクール かなで~る2 | PSX | | Original | | SLPS 00903 | |
| Onimusha 鬼武者 | PS2 | 1.01 | Taikenban | | SLPM 61001 | |
| Onimusha 鬼武者 | PS2 | 1.03 | Original, Mega Hits! | | SLPM 65010 … | |
| Onimusha 2 鬼武者2 | PS2 | 1.04 | Shokai Press-ban | | SLPM 65100 | |
| Onimusha 2 鬼武者2 | PS2 | 1.04 | Original, Mega Hits! | | SLPM 65101 … | |
| Onimusha 3 鬼武者3 | PS2 | 1.01 | Original | | SLPM 65413 | |
| Online Games: Dai Guru Guru Onsen オンラインゲームズ 大ぐるぐる温泉 | PS2 | 1.01 | Original | | SLPM 62195 | |
| Online Pro Wrestling オンラインプロレスリング | PS2 | 1.03 | Original | | SLPM 65586 | |
| Only You: Rebel Cross Only You リベルクルス | PS2 | 1.03 | Original, Drama CD Tsuki | | SLPS 25150 … | |
| Ooedo Fuusui Ingaritsu: Hanabi 2 大江戸風水因果律 花火2 | PSX | | Original | | SLPS 02814 | |
| Ookami 大神 | PS2 | 1.03 | Original, PlayStation 2 the Best | | SLPM 66375 … | |
| Ookami Kakushi おおかみかくし | PSP | 1.04 | Original | | ULJM 05413 | |
| Ookami-teki Monshou: Crest of Wolf 狼的紋章 クレスト・オブ・ウルフ | PCE | | Original | | HCD3044 | |
| Ookami: Fude-hajime no Maki 大神 筆はじめノ巻 | PS2 | 1.01 | Taikenban | | SLPM 61124 | |
| The Open Golf: History of Turnberry ジ・オープンゴルフ History of Turnberry | PSX | | Original | | SLPS 00418 | |
| The Operative: No One Lives Forever (Disc 1) ノーワンリブスフォーエバー | PC | 1.004, 1.004J | Original | | | |
| The Operative: No One Lives Forever (Disc 2) ノーワンリブスフォーエバー | PC | 1.004, 1.004J | Original | | | |
| Operator's Side オペレーターズ・サイド | PS2 | 1.02 | Doukonban, Doukonban: PlayStation 2 the Best | | SCPS 15038 … | |
| Option: Tuning Car Battle オプション チューニングカーバトル | PSX | | Original | | SLPS 01207 | |
| Option: Tuning Car Battle 2 オプション チューニングカーバトル2 | PSX | | Original | | SLPS 01857 | |
| Option: Tuning Car Battle Spec R オプション チューニングカーバトル スペックR | PSX | | Original | | SLPS 02587 | |
| 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 | Original, Best Collection | | SLPS 25767 … | |
| Orange Pocket: Cornet オレンジポケット -コルネット- | DC | 1.004 | Original, Shokai Genteiban | | T-18707M, T-18708M | |
| Ore ga Kantoku da! Gekitou Pennant Race オレが監督だ! ~激闘ペナントレース~ | PS2 | 1.03 | Original | | SLPM 65005 | |
| Ore no Imouto ga Konna ni Kawaii wake ga Nai Portable 俺の妹がこんなに可愛いわけがない ポータブル | PSP | 1.01 | Original, Limited Edition | | ULJS 00356 … | |
| Ore no Imouto ga Konna ni Kawaii Wake ga Nai Portable ga Tsuzuku Wake ga Nai (Disc 1) 俺の妹がこんなに可愛いわけがない ポータブル が続くわけがない | PSP | 1.00 | Original, PSP the Best, Tokusou-ban | | ULJS 00490 … | |
| Ore no Imouto ga Konna ni Kawaii Wake ga Nai Portable ga Tsuzuku Wake ga Nai (Disc 2) 俺の妹がこんなに可愛いわけがない ポータブル が続くわけがない | PSP | 1.00 | Original, PSP the Best, Tokusou-ban | | ULJS 00491 … | |
| Ore no Imouto Maker EX: Imouto to Koishiyo Portable 俺の妹めいかあEX いもうとと恋しよっ ぽ~たぶる | PSP | 1.01 | Limited Edition | | ULJS 00357 | |
| Ore no Ryouri 俺の料理 | PSX | | Original, PlayStation the Best | | SCPS 10099 … | |
| Ore no Shikabane o Koete Yuke 俺の屍を越えてゆけ | PSX | | Original, PlayStation the Best, PSone Books, PSone Books (Silver Disc) | | SCPS 10074 … | |
| Ore no Shikabane o Koete Yuke 俺の屍を越えてゆけ | PSP | 1.01 | Original, Fukkatsu Kinen Genteiban | | UCJS 10116 … | |
| Ore! Tomba オレっ!トンバ | PSX | | Taikenban | | SLPM 80165 | |
| Ore! Tomba オレっ!トンバ | PSX | | Original | | SLPS 01144 | |
| Oretachi Geesen Zoku: Akumajou Dracula オレたちゲーセン族 悪魔城ドラキュラ | PS2 | 1.01 | Original | | SLPM 62729 | |
| Oretachi Geesen Zoku: Karate-dou オレたちゲーセン族 空手道 | PS2 | 1.01 | Original | | SLPM 62628 | |
| Oretachi Geesen Zoku: Nekketsu Kouha Kunio-kun オレたちゲーセン族 熱血硬派くにおくん | PS2 | 1.01 | Original | | SLPM 62706 | |
| Oretachi Geesen Zoku: Pooyan オレたちゲーセン族 プーヤン | PS2 | 1.01 | Original | | SLPM 62731 | |
| Oretachi Geesen Zoku: Time Pilot オレたちゲーセン族 タイムパイロット | PS2 | 1.01 | Original | | SLPM 62644 | |
| Oretachi ni Tsubasa wa Nai 俺たちに翼はない | PS3 | 01.01 | Original | | BLJM 61018 | |
| Orgaslave (Side-1) オルガスレイブ | PC | | Original | | H PT 003-1 | |
| Orgaslave (Side-2) オルガスレイブ | PC | | Original | | H PT 003-2 | |
| Oshigoto-shiki Jinsei Game: Mezase Shokugyou King お仕事式人生ゲーム めざせ職業王 | PSX | | Original, The Best Takaramono | | SLPM 87316 … | |
| Othello World II: Yume to Michi e no Chousen オセロワールドII 夢と未知への挑戦 | PSX | | Original, Fukkokuban | | SLPS 00136 … | |
| Other Life Azure Dreams アザーライフ アザードリームス | PSX | | Original | | SLPM 86047 | |
| Oto to E no Deru Eigo Jisho No. 2: English in Dream 音と絵の出る英語辞書 No.2 「English in Dream」 | FMT | | Original | | HMB-129 | |
| Oto to E no Deru Eigo Jisho No. 4: Nandemo Illust Eigo Jiten Part 2 音と絵の出る英語辞書 No.4 「なんでもいらすとえいごじてん Part 2」 | FMT | | Original | | HMB-170 | |
| Otogi O・TO・GI ~御伽~ | XBOX | | Original | | FS-002 | |
| Otogi Story: Tenshi no Shippo おとぎストーリー ~天使のしっぽ~ | PSX | | Original | | SLPS 03531 | |
| Otogi: Hyakki Toubatsu Emaki O・TO・GI ~百鬼討伐絵巻~ | XBOX | | Special Pack | | FS-004 | |
| Otome-teki Koi Kakumei: Love Revo!! 乙女的恋革命★ラブレボ!! | PS2 | 1.03 | Original, Love Revo Box | | SLPM 66238 … | |
| Otostaz オトスタツ | PS2 | 1.00 | Taikenban | | PAPX 90228 | |
| Otostaz オトスタツ | PS2 | 1.00 | Taikenban | | SCPS 11020 | |
| Oudou Yuusha 王道勇者 | PC | | Original | | ALS-0029 | |
| Ougon Kishi Garo 黄金騎士 牙狼 | PS2 | 1.01 | Original | | SLPS 20463 | |
| Oukoku no Grand Chef 王国のグランシェフ | 3DO | | Original | | FZ-SJ4252 | |
| Oukyuu no Hihou Tension 王宮の秘宝 テンション | PSX | | Original, VAP Best Thanks 1800 | | SLPS 00438 … | |
| Oumagatoki 逢魔が時 | PSX | | Original, PSone Books | | SLPS 03235 … | |
| Oumagatoki 逢魔が時 プレミアム"FAN"ディスク | PSX | | Premium Fan Disc | | SLPM 80623 | |
| Ouran Koukou Host Club 桜蘭高校ホスト部 | PS2 | 1.01 | Genteiban | | SLPM 66737 | |
| OutRun 2 SP アウトラン2 スペシャルツアーズ | PS2 | 1.03 | Shokai Genteiban | | SLPM 66628 | |
| Over Drivin' DX オーバードライビンDX | PSX | | Original | | SLPS 00327 | |
| Over Drivin' IV オーバードライビンⅣ | PSX | | Original | | SLPS 02099 | |
| OverBlood オーバーブラッド | PSX | | Original, PlayStation the Best | | SLPS 00392 … | |
| OverBlood 2 オーバーブラッド2 | PSX | | Special Movie-ban | | PAPX 90046 … | |
| OverBlood 2 (Disc 1) オーバーブラッド2 | PSX | | Original | | SLPS 01261 | |
| OverBlood 2 (Disc 2) オーバーブラッド2 | PSX | | Original | | SLPS 01262 | |
| Oyaji Hunter Mahjong おやじハンター・マージャン | 3DO | | Original, Sample | | IMP-SF0703 | |
| Oz OZ -オズ- | PS2 | 1.02 | Original, Konami the Best | | SLPM 66033 … | |
| Oksfordzka Encyklopedia Historii Świata | PC | | Covermount | | SELL 0103 | |
| Ob"ekt 69: Kasablanka Объект 69: Касабланка | PC | | Original | | RUSSOBIT-M 2003/408 | |
| Ob"ekt 69: Mest' Krassera Объект 69: Месть Крассера | PC | | Original | | | |
| Obscure II ObsCure II | PC | 1.0.0.0 | Original | | | |
| Operation Flashpoint: Holodnaja vojna Операция Flashpoint: Холодная война | PC | 1.46 | Original | | | |
| Otorva v shkole Оторва в школе | PC | | Original | | | |
| Otverzhennye: Tajna temnoj rasy (Disc 1) Отверженные: Тайна темной расы | PC | | 1C: Igrushki | | SNOW OT21 0110 IR | |
| Overlord | PC | 1.2 | Original | | | |