| Unholy Confessions | r127007 | 2026-05-06 |
| Unholy Confessions (Demo) | r142082 | 2026-04-21 |
| Unholy Night - Prototype | r137682 | 2026-05-11 |
| Unholy Temptation - Demo | r133101 | 2026-05-11 |
| Uni v0.64.127b | r67294 | 2026-04-21 |
| Unica | r86588 | 2026-04-21 |
| Unichan - Demo | r64193 | 2026-04-21 |
| Unicorn Overlord -国王的假日- | r126019 | 2026-04-21 |
| Unicorn Reclamation - O2A2 Game Jam Version | r139102 | 2026-05-11 |
| Unicorn Reclamation+ | r146255 | 2026-04-21 |
| Unicorn Shake - 1.0 | r82571 | 2026-05-16 |
| Unicorn Shake - 1.1 | r82572 | 2026-04-21 |
| Unicorn-A Selection Hidden 2 ~Abakareta Honshou~ | r21549 | 2026-05-16 |
| Unicorn-A Collection Oshiete Miko Sensei | r13493 | 2026-05-15 |
| Unicorn-A Selection - Yuunee to Issho | r5217 | 2026-05-15 |
| Uniform | r36444 | 2026-05-07 |
| Uninvited Feelings | r132390 | 2026-05-11 |
| Uninvited Feelings v1.1 | r139705 | 2026-05-13 |
| Unionism Quartet | r116311 | 2026-05-16 |
| Unionism Quartet | r56526 | 2026-05-16 |
| Unionism Quartet - Regular Edition | r38108 | 2026-05-11 |
| Unionism Quartet - Reservation Privilege Harem Patch | r37948 | 2026-05-16 |
| Unionism Quartet A3-Days | r116312 | 2026-04-21 |
| Unionism Quartet A3-Days - Package Edition | r46859 | 2026-05-16 |
| Unionism Quartet B2-Style - B2 Tapestry Set | r150311 | 2026-05-14 |
| Unionism Quartet B2-Style - Package Edition | r146525 | 2026-05-14 |
| Unique Ladies | r134800 | 2026-05-06 |
| Unique Ladies - Censored Edition | r132349 | 2026-05-13 |
| Unique Ladies 18+ Patch | r132350 | 2026-04-21 |
| Unison Shift Itou Noizi Tsumeawase 15 Sakuhin Set | r75016 | 2026-05-16 |
| United Forever 0.6 | r114736 | 2026-04-21 |
| United by Destiny | r114734 | 2026-04-21 |
| Unity Marriage ~Futari no Hanayome~ Memorial Edition | r5912 | 2026-05-15 |
| Univ ~Ai Omatase~ First Press Edition with F&C card | r36949 | 2026-05-09 |
| Univ ~Koi Hajimaru Yo~ | r10291 | 2026-05-09 |
| Unival! Paranormal Girls Strike!! | r6043 | 2026-05-12 |
| Unival! Paranormal Girls Strike!! - Trial Edition | r6262 | 2026-05-15 |
| Universal Emperor v1.0 | r98390 | 2026-04-21 |
| Universal Nuts | r39835 | 2026-05-10 |
| Universal rUGP Win10 crash fix | r94522 | 2026-05-08 |
| Universally Loved | r58425 | 2026-04-21 |
| Universe Has No Favorites | r122120 | 2026-05-12 |
| Universe Talk v1.0 | r104392 | 2026-04-21 |
| Universitet Problem v1.8.5 Extended | r92694 | 2026-05-02 |
| Universitet Vinovella Book One v1.03 + Book Two v1.4.16 | r100650 | 2026-05-13 |
| University Days - Season 1 | r137660 | 2026-05-11 |
| University Days - Season 1 | r143513 | 2026-04-21 |
| University Days - Season 2 - Early Access | r149371 | 2026-05-10 |
| University Days - Season 2 Ep. 1-7 | r143512 | 2026-04-21 |
| University Days: Season 1 Episode 11 | r111825 | 2026-05-17 |