| Region | Title | System | Version | Edition | Languages | Serial | Status |
 | O.D.T. | PSX | | Demo | | SLED-01574 |  |
 | O.D.T. | PSX | | Demo | | SLED-01575 |  |
 | O.D.T. | PSX | | Original | | SLES-01410 |  |
 | O.D.T. | PSX | | Original | | SLES-01412 |  |
 | Oasis Road オアシスロード | PSX | | Original | | SLPS 01899 |  |
 | Ocha no Ma Battle お茶の間バトル | PSX | | Bundled with Controller | | SLPM 86681 |  |
 | 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 | | |  |
 | Odo Odo Oddity おどおど おっでぃ | PSX | | Hibaihin | | SLPM 80075 |  |
 | 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 |  |
 | Oh No! オーノー! | PSX | | Original | | SLPS 02764 |  |
 | Oh-chan no Oekaki Logic 2 おーちゃんのお絵かきロジック2 | PSX | | Original | | SLPS 00345 |  |
 | Oh-chan no Oekaki Logic 3 おーちゃんのお絵かきロジック3 | PSX | | Value 1500 | | SLPS 03134 |  |
 | Oh! Bakyuuun オーバキューン | PSX | | Original | | SLPS 02680 |  |
 | 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 | PSX | | Original | | SLES-00294 |  |
 | Olympic Soccer オリンピックサッカー | PSX | | Original | | SLPS 00523 |  |
 | Omega Assault | PSX | | Original | | SLES-04051 |  |
 | Omiai Commando: Ba-Couple ni Tsukkomi o お見合いコマンドー ~バカップルにつっこみを~ | PSX | | Original | | SLPM 86439 |  |
 | Omise de Tenshu おみせde店主 | PSX | | Original | | SLPS 01876 |  |
 | Omizu no Hanamichi お水の花道 | PSX | | Original | | SLPS 02815 |  |
 | One Two Smash: Tanoshii Tennis ワン・ツー スマッシュ たのしいテニス | PSX | | Honkakuha de 1300 | | SLPS 02585 |  |
 | Ongaku Tkool 3 音楽ツクール3 | PSX | | Original | | SLPS 03161 |  |
 | Ongaku Tkool: Kanadeeru 2 音楽ツクール かなでーる2 | PSX | | Rerelease | | SLPS 02684 |  |
 | The Oni Taiji!!: Mezase! Nidaime Momotarou The鬼退治!! 目指せ!二代目桃太郎 | PSX | | Original | | SLPS 00089 |  |
 | The Oni Taiji!!: Mezase! Nidaime Momotarou The鬼退治!! 目指せ!二代目桃太郎 | PSX | | Major Wave | | SLPM 86989 |  |
 | Online Connection CD: For the PlayStation Game Console | PSX | | Beta Trial Version 1.0 | | LSP-150500 … |  |
 | Ooumi Nobunaga Den: Geten II 大海信長伝・下天II | PSX | | Original | | SLPS 00874 |  |
 | 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 90084 |  |
 | 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 |  |
 | Otona no Asobi おとなの遊び | PSX | | Nichibutsu Collection 2000 | | SLPS 02459 |  |
 | Oujisama Lv1 王子さまLv1 | PSX | | Original | | SLPS 03412 |  |
 | Oujisama Lv1.5: Oujisama no Tamago 王子さまLv1.5 ~王子さまのたまご~ | PSX | | Original | | SLPS 03534 |  |
 | Oumagatoki 2 逢魔が時2 | PSX | | Original | | SLPS 03272 |  |
 | 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 Hanafuda de Shoubu ya! おやじの時間 ~ねーちゃん花札で勝負や!~ | PSX | | Original | | SLPS 02591 |  |
 | Oyaji no Jikan: Nee-chan Mahjong de Shoubu ya! おやじの時間 ~ねーちゃん麻雀で勝負や!~ | PSX | | Renkaban | | SLPS 03262 |  |
 | 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 |  |
 | O.D.T. | PSX | | Original | | SLES-01391 | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |
 | O.D.T. | PSX | | Original | | SLES-01409 | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |
 | O.D.T. | PSX | | Original | | SLES-01411 | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |
 | O.D.T. | PSX | | Original | | SLUS-00698 | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |
 | O.D.T. | PSX | | Demo | | SLUS-90043 | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |
 | Oda Nobunaga Den 織田信長伝 | PSX | | Original, Koei the Best | | SLPM 86337 … | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |
 | Oddworld: Abe's Exoddus (Disc 1) | PSX | | Original, Platinum | | SLES-01480 … | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |
 | Oddworld: Abe's Exoddus (Disc 2) | PSX | | Original, Platinum | | SLES-11480 … | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |
 | Oddworld: Abe's Exoddus (Disc 1) | PSX | | Original | | SLES-01503 | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |
 | Oddworld: Abe's Exoddus (Disc 2) | PSX | | Original | | SLES-11503 | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |
 | Oddworld: Abe's Exoddus (Disc 1) | PSX | | Original, Platinum | | SLES-01504 … | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |
 | Oddworld: Abe's Exoddus (Disc 2) | PSX | | Original, Platinum | | SLES-11504 … | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |
 | Oddworld: Abe's Exoddus (Disc 1) | PSX | | Original | | SLUS-00710 … | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |
 | Oddworld: Abe's Exoddus (Disc 2) | PSX | | Original | | SLUS-00731 … | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |
 | Oddworld: Abe's Exoddus + Duke Nukem: Time to Kill + B-Movie | PSX | | Demo | | SLED-01608 | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |
 | Oddworld: Abe's Exoddus + Duke Nukem: Time to Kill + Duke Nukem: 3D | PSX | | | | SLED-01655 | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |
 | Oddworld: Abe's Oddysee | PSX | | Demo | | SLED-00725 | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |
 | Oddworld: Abe's Oddysee | PSX | | Original, Platinum, Best of Infogrames: Value Series, Best of Infogrames: Adventure | | SLES-00664 … | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |
 | Oddworld: Abe's Oddysee | PSX | | Platinum | | SLES-00839 | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |
 | Oddworld: Abe's Oddysee | PSX | | Original | | SLES-00840 | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |
 | Oddworld: Abe's Oddysee | PSX | | Original | | SLES-00841 | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |
 | Oddworld: Abe's Oddysee | PSX | | Original | | SLUS-00190 | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |
 | Oddworld: Abe's Oddysee | PSX | | Demo | | SLUS-90004 | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |
 | Oddworld: Abe's Oddysee | PSX | Rev 1 | Original, Greatest Hits | | SLUS-00190 | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |
 | Oddworld: Abe's Oddysee | PSX | Rev 2 | Greatest Hits | | SLUS-00190 | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |
 | Oddworld: L'Exode d'Abe (Disc 1) | PSX | | Original | | SLES-01502 | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |
 | Oddworld: L'Exode d'Abe (Disc 2) | PSX | | Original | | SLES-11502 | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |
 | Oddworld: L'Odyssée d'Abe | PSX | | Original, Platinum, Best of Infogrames | | SLES-00838 … | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |
 | Odo Odo Oddity おどおどおっでぃ | PSX | | Original | | SLPS 00754 | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |
 | Off-World Interceptor Extreme | PSX | | Original | | SLES-00047 | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |
 | Off-World Interceptor Extreme | PSX | | Original | | SLUS-00020 | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |
 | 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 | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |
 | Official U.S. PlayStation Magazine Demo Disc 01 | PSX | | | | SCUS-94189 | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |
 | Official U.S. PlayStation Magazine Demo Disc 02 | PSX | | | | SCUS-94198 | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |
 | Official U.S. PlayStation Magazine Demo Disc 03 | PSX | | | | SCUS-94210 | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |
 | Official U.S. PlayStation Magazine Demo Disc 04 | PSX | | | | SCUS-94211 | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |
 | Official U.S. PlayStation Magazine Demo Disc 05 | PSX | | | | SCUS-94212 | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |