| OZMAFIA!! -vivace- ダウンロード版 | r70035 | 2026-04-21 |
| OZMAFIA!! -vivace- 体験版 | r46980 | 2026-04-21 |
| OZMAFIA!! -vivace- 通常版 | r36965 | 2026-04-21 |
| OZMAFIA!! -vivace- 限定版 | r37289 | 2026-04-21 |
| OZMAFIA!!-vivace- | r70514 | 2026-04-21 |
| OZMAFIA!!-vivace- ダウンロード版 | r71174 | 2026-04-21 |
| OZMAFIA!!0 -RefleXion- エイプリルフールver体験版 | r51201 | 2026-04-21 |
| Oakleaf Hill - Demo | r106975 | 2026-05-05 |
| Oakwood Academy of Spells and Sorcery - Download Edition | r47980 | 2026-04-21 |
| Oakwood Academy of Spells and Sorcery - Full Edition Patch | r47981 | 2026-04-21 |
| Oath | r48120 | 2026-04-21 |
| Oath of Loyalty v0.10 | r75297 | 2026-04-21 |
| Oath of Loyalty v0.10 - Incest Patch | r79054 | 2026-04-21 |
| Oathbreaker | r68641 | 2026-04-21 |
| Oathbreaker Season 1 | r69491 | 2026-05-06 |
| Oathbreaker: Season 2 | r78313 | 2026-05-06 |
| Oazis Futa | r128463 | 2026-05-17 |
| Oazuke Fetish! - Trial Edition | r20537 | 2026-05-16 |
| Oazuke Kareshi | r51950 | 2026-05-16 |
| Oba Ana ~Overhaul~ DVDPG Low Price Edition | r153430 | 2026-05-09 |
| Oba Netori ~Otto no Shiranai Midara na Kankei~ | r81101 | 2026-05-14 |
| Oba Netori ~Otto no Shiranai Midara na Kankei~ | r145012 | 2026-05-12 |
| Oba Netori ~Otto no Shiranai Midara na Kankei~ Download Edition | r44435 | 2026-05-21 |
| Oba Netori ~Otto no Shiranai Midara na Kankei~ Package Edition | r61075 | 2026-05-17 |
| Oba Shibori | r18519 | 2026-05-19 |
| Oba Shibori - Trial Edition | r18520 | 2026-05-16 |
| Oba no Shinshitsu - BDPG | r154344 | 2026-05-14 |
| Oba no Shinshitsu - DVDPG | r153445 | 2026-05-12 |
| Obaa-chan, Mama wa Sasete Kureta yo? ~Musuko Mitai ni Ubawasenai wa!~ Download Edition | r79853 | 2026-05-09 |
| Obama x Sangwoo Prototype v1.0 | r90690 | 2026-04-21 |
| Obbligato - Trial Edition | r153484 | 2026-05-09 |
| Oben Kyoshimasho! | r147776 | 2026-05-19 |
| Obereshno, dveri zachynyayut'sya! | r121534 | 2026-05-17 |
| Obey Her or Else | r120931 | 2026-04-21 |
| Obey Me! - Anime Otome Sim - | r67060 | 2026-05-16 |
| Obey Me! Nightbringer | r119249 | 2026-04-21 |
| Obey Me! Sinner's Choice: Lucifer | r151820 | 2026-05-11 |
| Obey Your Pirate Queen! | r134990 | 2026-05-16 |
| Obie Kitsune to Mofu Tsuki no Honmaru Totsu Hanashi ~Okurimono Honmaru Hen~ | r103164 | 2026-05-17 |
| Object Wank: Please Stop Asking If There's D*ldo Object Heads In The Game | r80042 | 2026-05-13 |
| Object Ward. | r123679 | 2026-05-20 |
| Object Ward. - Demo | r60478 | 2026-04-21 |
| Object Ward. ~April Fools' Collection~ | r89170 | 2026-04-21 |
| Objects of Desire - Demo | r83714 | 2026-05-16 |
| ObjectsInRooms-1.0.1-pc | r110037 | 2026-05-19 |
| Oblachi Njasten'ku | r36215 | 2026-05-13 |
| Oblachi Njasten'ku | r36214 | 2026-05-08 |
| Oblation v0.4 | r95421 | 2026-05-06 |
| Obletheon | r133672 | 2026-05-20 |
| Oblivio: Lost In The World | r144657 | 2026-05-11 |