Region | Title | System | Version | Edition | Languages | Serial | Status |
 | Overlord II | XBOX360 | | Beta | | CM-2058 |  |
 | Oh Yes... More Worms! Volume 1 | ACD | | Original | | | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |
 | Oldtimer | ACD | | Original | | | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |
 | Overkill & Lunar-C | CD32 | | Original | | /DP130002 | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |
 | Oshidashi Zintrick ~ ZinTricK 押し出しジントリック | NGCD | | Original | | ADCD-104 | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |
 | OverTop オーバートップ | NGCD | | Original | | ADCD-011 |  |
 | Off-World Interceptor オフ‐ワールド・インターセプター | 3DO | | Original | | FZ-SJ3151 |  |
 | Off-World Interceptor 혹성질주 | 3DO | | Original | | GDT-GA241 |  |
 | Off-World Interceptor | 3DO | | Original | | | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |
 | Ogura Hyakunin Isshu 小倉百人一首 | 3DO | | Original | | SV-0201 |  |
 | Olympic Soccer | 3DO | | Original | | FZ-SW0011 | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |
 | Olympic Summer Games | 3DO | | Original | | FZ-SW0012 | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |
 | Onee-san to Issho! Janken Paradise お姉さんといっしょ! じゃんけん パラダイス | 3DO | | Original | | FZ-SJ5251 | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |
 | Onee-san to Issho! Kisekae Paradise お姉さんといっしょ! 着せ替え パラダイス | 3DO | | Original | | FZ-SJ5252 | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |
 | OnSide Soccer | 3DO | | Unlicensed (oldergames, Good Deal Games Double Header! Two Game Set) | | | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |
 | Orbatak | 3DO | | Arcade CD-ROM | | |  |
 | Oukoku no Grand Chef 王国のグランシェフ | 3DO | | Original | | FZ-SJ4252 | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |
 | Out of This World | 3DO | | Original | | | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |
 | Out of This World | 3DO | RE | 3DO Maniac Pack | | | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |
 | Outer World アウター・ワールド | 3DO | | Original | | FZ-SJ3451 |  |
 | Oyaji Hunter Mahjong おやじハンター・マージャン | 3DO | | Original, Sample | | IMP-SF0703 | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |
 | Obaachan no Chiebukuro おばあちゃんの知恵袋 | FMT | | Original | | HMC-169 |  |
 | Okashina Mother Goose: Mixed-Up Mother Goose おかしなマザー・グース | FMT | | Original | | HMB-235 |  |
 | Okiraku TownsGEAR お気楽 TownsGEAR | FMT | | Bundled with Book | | SBHW-00002 |  |
 | Operation Wolf オペレーション・ウルフ | FMT | 1.00 | Ving Vol. 3 | | HMB-126 |  |
 | Oshare Cooking おしゃれクッキング | FMT | Rev A | Original | | HMA-267A |  |
 | Oshare Cooking II おしゃれクッキングⅡ | FMT | Rev B | Original | | HMA-267B |  |
 | Oto to E no Deru Eigo Jisho No. 1: Start with Words 音と絵の出る英語辞書 No.1 「Start with Words」 | FMT | | Original, Rerelease | | HMA-217 |  |
 | 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 | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |
 | 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 | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |
 | 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 | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |
 | Obsidian (Disc 1) | MAC | | Original, Great Series | | INR-001, MKM-001 | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |
 | Obsidian (Disc 2) | MAC | | Original, Great Series | | INR-001, MKM-001 | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |
 | Obsidian (Disc 3) | MAC | | Original, Great Series | | INR-001, MKM-001 | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |
 | Obsidian (Disc 4) | MAC | | Original, Great Series | | INR-001, MKM-001 | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |
 | Obsidian (Disc 5) | MAC | | Original, Great Series | | INR-001, MKM-001 | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |
 | Oceans Below The Software Toolworks Presents ... Oceans Below | MAC | | Original | | 2198620-590001 / I 073100, CDRM1103420 | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |
 | Oddworld: Abe's Exoddus: UK Packaging | MAC | | Art Assets | | | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |
 | Oddworld: Abe's Exoddus: US Manual | MAC | | Art Assets | | |  |
 | The Operative: No One Lives Forever (Disc 1) (Game Disc) | MAC | 1.004 | MacPlay | | |  |
 | Outdoor Wander Land アウトドアワンダーランド | MAC | | Original | | ILL-940715 |  |
 | Objectif Transparence | CDI | | Original | | RP IND 4 94 |  |
 | Objectif Transparence | CDI | | Original | | RP IND 4 94 |  |
 | Oesterreichische Nationalbibliothek: Multimediale Enzyklopaedie auf 3 CD-i's (Disc 1) (Prunksaal/Impressionen) | CDI | | Original | | 0103313 |  |
 | Oesterreichische Nationalbibliothek: Multimediale Enzyklopaedie auf 3 CD-i's (Disc 2) (Sammlungen) | CDI | | Original | | 0103313 |  |
 | Oesterreichische Nationalbibliothek: Multimediale Enzyklopaedie auf 3 CD-i's (Disc 3) (Apokalypse) | CDI | | Original | | 0103313 |  |
 | Oil of Ulay: Colour Collection: Colour Consultant | CDI | | Original | | |  |
 | Omgaan met Steriele Medische Hulpmiddelen | CDI | | Demo | | |  |
 | Omgaan met Steriele Medische Hulpmiddelen Omgaan met Steriele Medische Hulp-Middelen | CDI | | Original | | |  |
 | Ontdek de Interactieve Wereld van Neckermann | CDI | | Original | | | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |
 | Ontdek het Onbekende Nederland | CDI | 1.06 | Original | | 814 0104 | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |
 | Op Jacht naar Vernuft | CDI | | | | | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |
 | L'Open de Palm Springs | CDI | | Original, For Demonstration Only | | 812 0002 | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |
 | Open Universiteit: Practicum Toxicologische Histopathologie Open University: Practical Toxicological Histopathology | CDI | | Original | | 4589 |  |
 | OptImage CD-I Starter System: Sampler Disc: Version 1.1 | CDI | | | | |  |
 | Origami | CDI | | Original | | 810 0041 | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |
 | OSHA MHE Forklifts OSHA MHE Forklifts: PFS Interactive Training | CDI | | Original | | |  |
 | Osterreichs Werbepreise: Vier Highlights | CDI | | Original | | |  |
 | Otto Bock: Orthopädische Industrie: Neuheiten Vol. 2: Stand Januar 1997 | CDI | | Original | | |  |
 | Les Ours Berenstain: Comme des Grands | CDI | 1.05 | | | 812 0063 |  |
 | De Overval: Over Dwangmiddelen en Getuigenverhoor | CDI | | Original | | ovrvl 01 |  |
 | Oldtimer | PHOTO-CD | | Original | | 813 0067 |  |
 | Opel Corsa '97 | PHOTO-CD | | Original | | |  |
 | Opel Vectra '99 | PHOTO-CD | | Original | | |  |
 | Our Solar System | PHOTO-CD | | | | #CD-1 |  |
 | Ozaki Yutaka: Eyes: "Hakushi no Sanran" Yori 尾崎 豊 eyes「白紙の散乱」より | PHOTO-CD | | | | CAT.908753-7 |  |
 | ODN Palm Power Pack | PALM | | Original | | |  |
 | Oh-chan no Oekaki Logic for Palm おーちゃんのお絵かきロジック for Palm | PALM | 1.04 | Original | | |  |
 | Okigaru Igo Taikyoku お気軽囲碁対局 | PALM | | Original | | |  |
 | OnHand Chess / Sega Swirl Lite | PALM | PDA103-01 | Original | | PDA103-01 |  |
 | OnHand Complete Astrologer OnHand Complete Astrologer: Horoscopes & More! | PALM | PDA108-01 | OnHand Double Pack (Sports Games/Astrologer) | | PDA108-01 |  |
 | OnHand Sports Games / Sega Swirl Lite | PALM | PDA105-01 | OnHand Double Pack (Sports Games/Astrologer) | | PDA105-01 |  |
 | Oxford Handbook of Clinical Medicine for PDAs: Seventh Edition | PALM | 10.0.05/2007.9.7 | | | |  |
 | Okigaru Igo Taikyoku お気軽囲碁対局 | PPC | | Original | | |  |
 | Oh!X 1998 Spring Special CD-ROM (Part 2) (Sampler Disc) | X68K | | | | |  |
 | Oh!X 1998 Spring Special CD-ROM (Part 1) | X68K | | | | |  |
 | Oh!X 1999 Spring Special CD-ROM (Part 2) (Sampler Disc) | X68K | | | | |  |
 | Oh!X 1999 Spring Special CD-ROM (Part 1) | X68K | | | | |  |
 | Oh!X 1999 Summer Special CD-ROM | X68K | | | | |  |
 | Oh!X 2000 Spring Special CD-ROM (Part 1) | X68K | | | | |  |
 | Oh!X 2000 Spring Special CD-ROM (Part 2) | X68K | | | | |  |
 | Oh!X 2001 Spring Special CD-ROM | X68K | | | | |  |
 | One-derful Theater ONEだふるシアター | X68K | | | | |  |
 | Oregano Oregano: RISC OS Web Browser | ARCH | | Original | | |  |
 | Oha Suta Series 01: Zonapara おはスタシリーズ01 象南波羅~ゾナパラ~ | KSITE | | Original | | 536956 |  |
 | Oha Suta Series 02: Oha Ska! おはスタシリーズ02 おは スカ | KSITE | | Original | | 538714 |  |
 | Our House featuring The Family Circus | VIS | | Original | | 25-6146 |  |
 | OutRun 2 | CHIHIRO | 2.000 | Original | | GDX-0004A |  |