| Our Celestial Faerietale - Demo | r58384 | 2026-05-07 |
| Our Bloody Secret | r149875 | 2026-04-21 |
| Our Bad Ending | r135033 | 2026-05-14 |
| Our > Transitive > Properties - Demo | r129992 | 2026-05-13 |
| Our 4th Yule | r86532 | 2026-04-21 |
| Ouma's Love Hotel (Amami Version) | r149139 | 2026-04-21 |
| Ouma Goes To The Blood Bank | r149329 | 2026-05-12 |
| Oukyuu no Shugosha-tachi | r48982 | 2026-05-13 |
| Oukoku Douwa | r21641 | 2026-05-16 |
| Ouki | r53613 | 2026-05-15 |
| Ouka ~Kokoro Kagayakaseru Sakura~ | r10184 | 2026-05-11 |
| Ouka Sengoku! ~Nobunaga-chan no Koishite Yabou!?~ Trial Edition 1st | r10540 | 2026-05-15 |
| Ouka Sabaki | r58177 | 2026-05-16 |
| Ouka Ryouran | r13309 | 2026-05-07 |
| Ouka Ranman ~Edo Harem~ | r92549 | 2026-05-15 |
| Oujo Kafar no [Bad End] Happy End | r58123 | 2026-05-13 |
| Oujo Houkai - Download Edition | r18339 | 2026-05-16 |
| Oujo & Onna Kishi W Do Gehin Roshutsu ~Chijoku no Misemono Dorei~ | r147380 | 2026-04-21 |
| Ouji-sama to Tatta Hitori no Watashi | r28776 | 2026-05-16 |
| Ouji-sama Lv1 | r13879 | 2026-05-15 |
| Ouji to Dorei - Package Edition | r40307 | 2026-05-10 |
| Ouji to Dorei - Download Edition | r42995 | 2026-05-17 |
| Ougon no Rashinban (PC-98) | r49445 | 2026-05-12 |
| Ougon no Rashinban | r42471 | 2026-05-10 |
| Oudou Yuusha | r8621 | 2026-05-08 |
| Ouchi de Kurasou! - Trial Edition | r34086 | 2026-05-16 |
| Ou-sama no Shokuzai - Package Edition | r40175 | 2026-05-12 |
| Ou-sama no Chou - Package Edition | r28583 | 2026-05-16 |
| Ou-sama Juuzoku Mail Ou-sama Game 1-kai-me shi to Kan'nou no Kanshoku - DVDPG | r75489 | 2026-05-16 |
| Ou-sama Juuzoku Mail Iinari no Gakuen | r20276 | 2026-05-10 |
| Ottoman Dreams: Rise of Süleiman | r129450 | 2026-04-21 |
| Otto o Aisuru Bakunyuu Hitozuma-tachi ga Toshishita no Saru Seiyoku ni Jurin sarete Tsugou no ii Harami Omocha ni Ochiru Made | r91467 | 2026-04-21 |
| Otto no Tonari de Yobai Sareru Hounyuu Nikubenki Tsuma Yuuki Chigusa | r15923 | 2026-05-15 |
| Otto no Inu Ma ni... ~Watashi Odosarete, Anata ni Ienai Koto Shimashita~ Trial Edition | r53773 | 2026-05-09 |
| Otto no Inu Ma ni... ~Watashi Odosarete, Anata ni Ienai Koto Shimashita~ | r116174 | 2026-05-13 |
| Otto ga mi Terukara mou Yamete… Shainryokou de Douryou tachi Nimo te Asobareru Kyonyu Hitozuma - DVDPG | r151970 | 2026-05-11 |
| Otter of My Life | r66740 | 2026-04-21 |
| Otter Tale - Build 9 | r110314 | 2026-05-05 |
| Otter Tale - Build 7 | r133950 | 2026-05-15 |
| Otter Of My Life - Demo | r58923 | 2026-05-13 |
| Otrjad Geroja Dolzhen Past' v0.6.0 | r120994 | 2026-05-07 |
| Oto☆Puri Miwa Kohaku Hen | r30601 | 2026-05-07 |
| Otouto: Nichijoukei | r39042 | 2026-05-07 |
| Otouto to, Natsumatsuri nite. | r64024 | 2026-05-16 |
| Otouto Shibori ~Ane-tachi no Sei Kyouiku~ Package Edition | r25628 | 2026-05-15 |
| Otouto Shibori ~Ane-tachi no Sei Kyouiku~ Download Edition | r25629 | 2026-05-17 |
| Otouto Scramble - Remake | r79880 | 2026-04-21 |
| Otouto Scramble | r50878 | 2026-04-21 |
| Otouto Scramble | r46366 | 2026-04-21 |
| Otou-san to Watashi - Android Edition | r151592 | 2026-05-16 |