| Oni Ama -Watashi ni Amaete, Onii-chan- Premium Edition | r81548 | 2026-05-09 |
| Oni Coach! Shouri e no Ryoujoku - DVDPG | r153527 | 2026-05-11 |
| Oni Coach!! ~Shouri e no Ryoujoku~ Download Edition | r71565 | 2026-05-08 |
| Oni Coach!! ~Shouri e no Ryoujoku~ Low Price Edition | r24508 | 2026-05-16 |
| Oni Kagura - Special Edition | r3365 | 2026-05-07 |
| Oni Kantoku to Ore no Kanojo ~Joyuu no Tamago ga Oni Kantoku to Nikutai Kankei o Musunda Riyuu~ | r22312 | 2026-05-19 |
| Oni Kantoku to Ore no Kanojo ~Joyuu no Tamago ga Oni Kantoku to Nikutai Kankei o Musunda Riyuu~ | r116326 | 2026-04-21 |
| Oni Kyoushi ~Chijoku no Kagai Jugyou~ | r20626 | 2026-05-12 |
| Oni Oneesan | r108758 | 2026-05-14 |
| Oni Onsen | r124927 | 2026-04-21 |
| Oni Onsen - Demo | r121304 | 2026-05-16 |
| Oni Seiyoku - Best Price Edition | r71750 | 2026-05-18 |
| Oni Seiyoku - Download Edition | r43892 | 2026-05-10 |
| Oni Seiyoku - Popular Edition | r59318 | 2026-05-08 |
| Oni Uta. ~Oni ga Kitarite, Amaesasero to Notamouta.~ Download Edition | r50921 | 2026-05-19 |
| Oni Uta. ~Oni ga Kitarite, Amaesasero to Notamouta.~ Trial Edition | r14866 | 2026-05-17 |
| Oni ga Kuru. ~Ane ga Hinshi de Pinchi Desu~ | r78403 | 2026-05-20 |
| Oni no Kamen | r37772 | 2026-05-08 |
| Oni no Miya | r136851 | 2026-05-19 |
| Oni no Shima - Download Edition | r34147 | 2026-05-11 |
| Oni no Shima - Package Edition | r34148 | 2026-05-19 |
| Oni no Warau Koro | r54188 | 2026-05-20 |
| OniAi: Gimic LOw Sho Higashiyama | r84030 | 2026-05-19 |
| Onichichi After ~Nure Suke Airi to Amayadori Hen~ | r79235 | 2026-05-13 |
| Onigashima | r142629 | 2026-04-21 |
| Onigashima - Demo | r142630 | 2026-04-21 |
| Onigawara ~The God's Holy War and Record~ | r83372 | 2026-05-12 |
| Onigokko! | r10702 | 2026-05-09 |
| Onigokko! | r121339 | 2026-05-06 |
| Onigokko! | r109908 | 2026-04-21 |
| Onigokko! - Download Edition | r80456 | 2026-05-09 |
| Onigokko! - Mosaic Restoration Patch | r138295 | 2026-05-16 |
| Onigokko! - Physical Limited Edition | r80457 | 2026-04-21 |
| Onigokko! - Trial Edition | r16885 | 2026-05-19 |
| Onigokko! Fandisc | r97675 | 2026-05-19 |
| Onigokko! Fandisc | r121340 | 2026-04-21 |
| Onigokko! Fandisc - Mosaic Restoration Patch | r138667 | 2026-04-21 |
| Onigokko! Portable - Regular Edition | r23561 | 2026-05-07 |
| Oniguisama | r136250 | 2026-05-17 |
| Onii-Chan | r56250 | 2026-04-21 |
| Onii-chan Asobo | r134322 | 2026-04-21 |
| Onii-chan Asobo | r60336 | 2026-04-21 |
| Onii-chan Continue! -Secret Love With Yuri- | r133124 | 2026-04-21 |
| Onii-chan Daisuki! | r71438 | 2026-05-19 |
| Onii-chan Daisuki! ~Love? or Like?~ | r3516 | 2026-05-16 |
| Onii-chan Ecchi Shiyo? - Download Edition | r36813 | 2026-05-07 |
| Onii-chan Jushinchuu - DVDPG | r20409 | 2026-05-07 |
| Onii-chan Mou Icchatta no? - Download Edition | r17286 | 2026-05-19 |
| Onii-chan Nechatta? - Package Edition | r46706 | 2026-05-07 |
| Onii-chan Sharing | r144064 | 2026-05-16 |