| Oh Yuusha yo, Itte Shimau to wa Nasakenai! - Download Edition | r43230 | 2026-05-06 |
| Oh Yuusha yo, Itte Shimau to wa Nasakenai! | r116359 | 2026-05-16 |
| Oh Papochka v0.3 | r125167 | 2026-05-20 |
| Oh No, It's Monday! | r146651 | 2026-04-21 |
| Oh No! I Died and Woke Up a Greek God! | r122209 | 2026-06-03 |
| Oh My goof Knight![Oh My lost sister...同梱ver] | r45656 | 2026-04-21 |
| Oh My Cod!!: We Mer-Made For Each Other! | r109813 | 2026-05-20 |
| Oh Mai Tiara: The Road For Love - Demo | r81759 | 2026-05-13 |
| Oh Mai Tiara: The Road For Love - Demo | r77210 | 2026-04-21 |
| Oh Mai Tiara: The Road For Love | r133142 | 2026-05-18 |
| Oh Josiah | r30037 | 2026-04-21 |
| Oh Daddy: Part 2 (v1.0) | r113934 | 2026-04-21 |
| Oh Daddy: Part 1 (v0.9) + Part 2 (v1.0) | r109536 | 2026-05-14 |
| Oh Daddy: Part 1 (v0.9) + Part 2 (v1.0) | r130926 | 2026-04-21 |
| Oh Daddy: Part 1 (v0.9) | r82540 | 2026-04-21 |
| Oh Daddy v0.8 | r109537 | 2026-06-03 |
| Oh Daddy - v0.3 | r84440 | 2026-05-05 |
| Oguzok i Banany 2. VOZVRASCHENIE OGUZKA | r91144 | 2026-06-03 |
| Ograidet | r152163 | 2026-06-04 |
| Ogon'ki | r115073 | 2026-06-01 |
| Ogon'ki | r115072 | 2026-05-19 |
| Ogichin ~Daiikkai Ogiue ga Futanari Dattara Dou Suru ka Kaigi~ | r22820 | 2026-06-03 |
| Ogeretsu Daihyakka - DVDPG | r153861 | 2026-05-19 |
| OgamiyaZIN | r128064 | 2026-05-16 |
| Ogamika no Himegoto | r94347 | 2026-06-04 |
| Ofuroya Kaidan Sakura (With Female Character Route) | r86716 | 2026-05-21 |
| Ofuroya Kaidan Sakura (No Female Character Route) | r86717 | 2026-05-21 |
| Ofukai - Trial Edition | r33962 | 2026-05-11 |
| Ofukai | r33961 | 2026-05-05 |
| Offsuit Pair | r138640 | 2026-04-21 |
| Offside R 18+ Adults Only Patch | r148520 | 2026-04-21 |
| Offside | r59539 | 2026-05-19 |
| Offscreen Scandal | r29366 | 2026-05-24 |
| Offscreen Scandal | r29367 | 2026-04-21 |
| OfflineTV DanganRonpa | r149301 | 2026-04-21 |
| Offline de Ecchi na Level Age - Trial Edition | r87055 | 2026-06-03 |
| Offline de Ecchi na Level Age - Download Edition | r87043 | 2026-06-04 |
| Offline Shoujo - Prologue Trial Edition | r29923 | 2026-06-04 |
| Offline Shoujo | r24890 | 2026-06-03 |
| Offline Meeting | r96674 | 2026-06-02 |
| Offline | r145802 | 2026-05-29 |
| Officer's ~Onna Sousakan-tachi no Ingoku~ | r61924 | 2026-06-09 |
| Officer's ~Onna Sousakan-tachi no Ingoku - Voiced Edition | r61923 | 2026-06-01 |
| OfficeLove -クールな先輩彼女と秘密のイキ抜き- 舞佳抱き枕カバー付き | r146270 | 2026-04-21 |
| OfficeLove -Cool na Senpai-Kanojo to Himitsu no "Iki-nuki"- Trial Edition | r147103 | 2026-05-20 |
| OfficeLove -Cool na Senpai-Kanojo to Himitsu no "Iki-nuki"- Special Edition | r146271 | 2026-05-15 |
| OfficeLove -Cool na Senpai-Kanojo to Himitsu no "Iki-nuki"- Regular Edition | r146268 | 2026-05-11 |
| Office lovers | r120508 | 2026-05-19 |
| Office de Sasou Ecchi na Kanojo - Trial Edition | r53373 | 2026-06-01 |
| Office de Sasou Ecchi na Kanojo - Shigoto o Wasurete, Watashi-tachi to Ecchi Shimasho! to 3-nin ga Sasotte Kuru Patch | r53371 | 2026-05-15 |