| Region | Title | System | Version | Edition | Languages | Serial | Status |
|---|
 | Overlord: Raising Hell | PS3 | 01.00 | Original |      | BLUS-30143 | ![2 and more dumps from original media [!]](/images/status/green.png "2 and more dumps from original media [!]") |
 | Overlord: Raising Hell | PS3 | 01.00 | Original | | BLES-00257 | |
| Overlord: Dark Legend | WII | | Original | | RVL-ROAP-EUR | |
 | Overlord II | XBOX360 | | Original | | CM-2057 | |
| Overlord II | PS3 | 01.01 | Original | | BLUS-30317 | |
| Overlord II | PS3 | 01.02 | Original | | BLES-00580 | |
 | Overlord | PC | 1.2 | Original |  | | |
 | Overlord
オーバーロード：魔王サマ復活の時 | XBOX360 | | Original |  | CM-2050 | |
 | Overlord | PC | | Original | | MOVL1CDEU00 | |
| Overkill & Lunar-C | CD32 | | Original | | /DP130002 | |
| Overboard! | PC | | Original | | | |
| Overboard! | PC | | Dice | | DCG 005752, DMM 005776 | |
| Overboard! | PSX | | Original, 1998 4 PlayStation Multi Pack | | SLES-00865 | |
| OverBlood 2 (Disc 2)
オーバーブラッド２ | PSX | | Original | | SLPS 01262 | |
| OverBlood 2 (Disc 1)
オーバーブラッド２ | PSX | | Original | | SLPS 01261 | |
| OverBlood 2
オーバーブラッド２ | PSX | | Special Movie-ban | | PAPX 90046 … | |
 | OverBlood 2 (Disc 2) | PSX | | Original | | SLES-11880 | |
| OverBlood 2 (Disc 1) | PSX | | Original | | SLES-01880 | |
 | OverBlood 2 (Disc 1) | PSX | Rev 1 | Original | | SLES-02187 … | |
| OverBlood 2 (Disc 2) | PSX | Rev 1 | Original | | SLES-11879 … | |
| OverBlood 2 (Disc 1) | PSX | Rev 1 | Original | | SLES-01879 … | |
| OverBlood | PSX | | Original | | SLUS-00464 | |
| OverBlood
オーバーブラッド | PSX | | Original, PlayStation the Best | | SLPS 00392 … | |
| OverBlood | PSX | | Original | | SLES-00770 | |
| OverBlood | PSX | | Original | | SLES-00768 | |
| Over Drivin' IV
オーバードライビンⅣ | PSX | | Original | | SLPS 02099 | |
| Over Drivin' DX: Rally Edition
オーバードライビンＤＸ ラリーエディション | PSX | | Hibaihin | | SLPM 80032 | |
| Over Drivin' DX
オーバードライビンＤＸ | PSX | | Original | | SLPS 00327 | |
| Over 1000 Games: The Complete Encyclopedia of Games (Disc 2) | PC | | Rerelease | | | |
| Over 1000 Games: The Complete Encyclopedia of Games (Disc 1) | PC | | Rerelease | | | |
| Outward | PC | | Day One Edition | | 1024669LAINT, 103699 | |
| Outtrigger
アウトトリガー | DC | 1.008 | Original | | HDR-0118 | |
| Outpost 2: Divided Destiny | PC | 1.2.0.5 | Original | | | |
| Outlaws: Die Gesetzlosen (Disc 2) | PC | 1.1.1 | Rerelease | | | |
| Outlaws: Die Gesetzlosen (Disc 1) | PC | 1.1 | Rerelease | | | |
| Outlaw Volleyball Remixed | PS2 | 1.02 | Original | | SLUS 21049 | |
| Outlaw Volleyball Remixed | PS2 | 1.01 | Original | | SLES-53138 … | |
| Outlaw Golf: Holiday Golf | XBOX | | Original | | SS-005 | |
| Outlaw Golf | GC | | Original | | DL-DOL-GOFE-USA | |
| Out of This World | 3DO | RE | 3DO Maniac Pack | | | |
| Out of This World | 3DO | | Original | | | |
| Oukoku no Grand Chef
王国のグランシェフ | 3DO | | Original | | FZ-SJ4252 | |
| Oudou Yuusha
王道勇者 | PC | | Original | | ALS-0029 | |
 | Otomedius Excellent | XBOX360 | | Original | | KN-2106 | |
| Otogi: Myth of Demons | XBOX | | Original | | FS-002 | |
| Otogi: Myth of Demons | XBOX | | Special Pack | | FS-002 | |
| Otogi: Myth of Demons | XBOX | | Original | | FS-002 | |
| 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 | |
| Oto to E no Deru Eigo Jisho No. 3: Nandemo Illust Eigo Jiten
音と絵の出る英語辞書 Ｎｏ．３ 「なんでもいらすとえいごじてん」 | FMT | | Original | | HMB-131 | |
| 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 | |
 | Other Life Azure Dreams
アザーライフ アザードリームス | PSX | | Original | | SCPS 45126 … | |
| 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 … | |
| Oshidashi Zintrick ~ ZinTricK
押し出しジントリック | NGCD | | Original | | ADCD-104 | |
| Oro e Gloria: La Strada per El Dorado | PSX | | Original | | SLES-03186 | |
| Die Original Moorhuhn Jagd | PC | | Best of Moorhuhn | | | |
 | Ori and the Blind Forest: Definitive Edition | PC | 5.3.2.9582331 | Original, Limited Edition | | | |
| 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: 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 | |
| The Oregon Trail | PC | 1.2 | Original | | #HCD706 | |
| The Oregon Trail | PC | 1.2 | Original | | #HCD706 | |
| Oregon Trail II: 25th Anniversary Limited Edition | PC | 1.3 | Original, SoftKey | | #OTR744AE-CD | |
| Oregon Trail II | PC | 1.31 | Rerelease | | #HCD744AE-CD | |
| Oregon Trail II | PC | 1.31 | Rerelease | | HCD744BE-CD | |
| Oregon Trail II | PC | 1.3 | Smart Saver | | 381032-CD/i401ha | |
| The Oregon Trail 5th Edition: Adventures Along the Oregon Trail | PC | 1.1 | Rerelease, Southwestern School Set | | 380859B-CD | |
| The Oregon Trail 5th Edition: Adventures Along the Oregon Trail | PC | 1.0 | Original | | 380859-CD | |
| The Oregon Trail 4th Edition (Disc 3) | PC | 1.1 | Rerelease | | OTF744BE-CD3 | |
| The Oregon Trail 4th Edition (Disc 2) | PC | 1.1 | Rerelease | | OTF744BE-CD2 | |
| The Oregon Trail 4th Edition (Disc 1) | PC | 1.1 | Rerelease | | OTF744BE-CD1 | |
| The Oregon Trail 3rd Edition: Pioneer Adventures (Disc 3) | PC | | Original | | OTA744AE-CD3 | |
| The Oregon Trail 3rd Edition: Pioneer Adventures (Disc 2) | PC | | Original | | OTA744AE-CD2 | |
| The Oregon Trail 3rd Edition: Pioneer Adventures (Disc 1) | PC | 1.0 | Original | | OTA744AE-CD1 | |
| Ore no Dungeon: Desire and Adventurous Spirit
己のダンジョン Ｄｅｓｉｒｅ ａｎｄ ａｄｖｅｎｔｕｒｏｕｓ ｓｐｉｒｉｔ． | PSP | 1.01 | Original | | ULJM 05167 | |
| 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 | |
 | The Orange Box (Disc 2) | PC | | Original, EA Classics |     | VAE07705811D2/ENG, VAE07707118D2/ENG, VAX07705811D2, VAX07705811D2/AUS | |
| The Orange Box (Disc 1) | PC | | Original, EA Classics | | 985207, VAE07705811D, VAE07705811D/ENG, VAE07707118D/ENG, VAX07705811D/AUS | |
| The Orange Box (Disc 2) | PC | | Original | | VAI07705811D2 | |
| The Orange Box (Disc 1) | PC | | Original | | VAI07705811D | |
| The Orange Box (Disc 2) | PC | | Original, EA Value Games | | VAD07705811D2 | |
| The Orange Box (Disc 1) | PC | | Original, EA Value Games | | VAD07705811D | |
| The Orange Box (Disc 1) | PC | | Original | | VAX07705811D | |
| OPSM Platinum Special Demo All
Official UK PlayStation Magazine Platinum Special | PSX | | | | SCED-02122 | |
| OPSM Best Racing Game Ever
The Best Racing Game Ever | PSX | | | | SCED-02492 | |
| OPSM Best PS One Games Ever
Official UK PlayStation Best Games Ever! | PSX | | | | SCED-03239 | |
| OPSM Best Games Ever 2000
Best Games Ever: Special Edition | PSX | | | | SCED-03375 | |
| OPSM Best Ever Ever Games Demo
Official UK PlayStation Best Games Ever! Magazine | PSX | | | | SCED-02851 | |
| Operator's Side
オペレーターズ・サイド | PS2 | 1.02 | Doukonban, Doukonban: PlayStation 2 the Best | | SCPS 15038 … | |
| The Operative: No One Lives Forever (Disc 2) | PC | 1.0 | Original |  | FXX08903223D2 | |
| The Operative: No One Lives Forever (Disc 1) | PC | 1.0 | Original | | FXX08903223D1 | |
| Operation WinBack 2: Project Poseidon | PS2 | 1.00 | Original | | SLES-54116 … | |
| Operation Flashpoint: Resistance | PC | 1.75 | Original | | MOFRCDUS00 | |
| Operation Flashpoint: Resistance | PC | 1.75 | Original | | MOFRCDEU00 | |
| Operation Flashpoint: Red River | XBOX360 | | Original | | CM-2104 | |
| Operation Flashpoint: Red River | PS3 | 01.01 | Original | | BLUS-30704 | |
| Operation Flashpoint: Red River | PS3 | 01.02 | Original, Codemasters the Best | | BLJM 60361 … | |
| Operation Flashpoint: Red River | XBOX360 | | Original | | CM-2104 | |
| Operation Flashpoint: Red River | PC | 1.0 | Original | | MOFP3CDEU00 | |
| Operation Flashpoint: Red River | PS3 | 01.01 | Original | | BLES-01171 | |
| Operation Flashpoint: Holodnaja vojna
Операция Flashpoint: Холодная война | PC | 1.46 | Original | | | |
| Operation Flashpoint: Gold Upgrade | PC | 1.30 | Original, Gold Edition | | MOFUCDEU00, MOFUCDUS00 | |
