Region | Title | System | Version | Edition | Languages | Serial | Status |
 | Oracle no Houseki: Jewels of the Oracle オラクルの宝石 | SS | 1.004 | Original | | T-1511G | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |
 | Ooedo Renaissance 大江戸ルネッサンス | SS | 1.001 | Original | | T-9104G | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |
 | Omakase! Savers おまかせ!退魔業 | SS | 1.002 | Original | | GS-9030 | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |
 | Olympic Soccer | SS | 2.000 | Original | | T-7904H-09, T-7904H-50 | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |
 | Ojousama o Nerae!! お嬢様を狙え!! | SS | 1.002 | Original | | T-38101G | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |
 | Ojousama Express (Disc 2) お嬢様特急 | SS | 1.005 | Original | | T-27803G | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |
 | Ojousama Express (Disc 1) お嬢様特急 | SS | 1.005 | Original | | T-27803G | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |
 | Oh-chan no Oekaki Logic おーちゃんのお絵かきロジック | SS | 1.005 | Original | | T-1508G | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |
 | Ochigee Designer Tsukutte Pon! 落ちゲー・デザイナー 作ってポン! | SS | 1.090 | Original | | T-9108G | ![2 and more dumps from original media [!] 2 and more dumps from original media [!]](/images/status/green.png) |
 | Ousama Game (Disc 2) (Momo Disc) 王様げーむ | SS | 1.001 | Original | | T-21904G |  |
 | Ousama Game (Disc 1) (Ichigo Disc) 王様げーむ | SS | 1.001 | Original | | T-21904G |  |
 | Olympic Soccer | SS | 2.000 | Original | | T-7904H |  |
 | 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-07904H-18 |  |
 | 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 |  |
 | Ojousama o Nerae!! お嬢様を狙え!! | SS | 1.003 | Original | | T-38101G |  |
 | Off-World Interceptor Extreme | SS | 1.000 | Original | | T-15908H |  |
 | 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-50 |  |