| Tsuyoshi Shikkari Shinasai Taisen Puzzle-dama Boss Enable | bankbank | Tsuyoshi Shikkari Shinasai - Taisen Puzzle Dama | Puzzle | SNES | GP | Improvement | 1.0 | 03 Apr 2022 |
| Turbo Outrun Enhanced Colors | Dolsilwa | Turbo Outrun | Racing | GEN | G | Improvement | 1.0 | 02 May 2020 |
| Turok 3 - Shadow of Oblivion June 6th 2000 Prototype Corrective Patch | Zoinkity | Turok 3: Shadow of Oblivion | Action > Shooter | N64 | S, O | Bug Fix | 1.0 | 11 Sep 2021 |
| Turok 3 - Shadow of Oblivion July 10th 2000 Prototype Corrective Patch | Zoinkity | Turok 3: Shadow of Oblivion | Action > Shooter | N64 | S, O | Bug Fix | 1.0 | 21 Sep 2021 |
| Turrican Fixed | Linkuei | Turrican | Action > Platformer | GEN | G, GP | Bug Fix | 1.5 | 06 Sep 2015 |
| Turrican - health fix and unlimited continue | NinjAkira | Turrican | Action > Platformer | GEN | GP | Improvement | 1.0 | 01 Jun 2019 |
| Turrican - Sound Adjustments | FateForWindows | Turrican | Action > Platformer | GEN | S | Improvement | 1.0 | 24 May 2021 |
| Twin Cobra/Kyuukyoku Tiger Arcade tiles/sprites/colors | fusaru | Twin Cobra | Action > Shooter | GEN | G | Improvement | 2.00 | 14 Jul 2016 |
| Disable flashing | TEPA6ANT | Twin Cobra | Action > Shooter | NES | G, O | Bug Fix | 1.0 | 29 Sep 2017 |
| Twin Hawk / Daisenpuu arcade style tiles/sprites/colors | fusaru | Twin Hawk | Action > Shooter | GEN | G | Improvement | 1.0 | 11 Feb 2017 |
| Twinbee AC | Messatu | TwinBee | Action > Shooter | NES | G | Improvement | 0.3.2 | 21 Jan 2018 |
| Van-1 | Inventor | TwinBee | Action > Shooter | NES | G | Improvement | 1.0 | 01 Jan 2001 |
| Pop'n TwinBee: Rainbow Bell Adventures - Region Fix | SunGodPortal | TwinBee: Rainbow Bell Adventure | Action > Platformer | SNES | O | Improvement | 1.0 | 21 Jan 2015 |
| Twinkle Tale - Alternate Style | Pyron | Twinkle Tale | Action > Shooter | GEN | G | Improvement | 1.0 | 25 May 2016 |
| uforia 1.2 Mario Bros. character | sebastianangel | U-four-ia: The Saga | Action > Platformer | NES | G | Complete | 1.2 | 25 May 2021 |
| Triangle Channel Bug Fix | LucianoTheWindowsFan | U-four-ia: The Saga | Action > Platformer | NES | S | Bug Fix | 1.0 | 14 Nov 2020 |
| Area 88 EN Plus | blizzz | U.N. Squadron | Action > Shooter | SNES | G, T, O | Improvement | 1.03 | 30 Aug 2021 |
| Uchuu Senkan Gomora Arcade Colors | fusaru | Uchuu Senkan Gomora | Action > Shooter | GEN | G | Improvement | 1.01 | 18 Feb 2016 |
| Ultima Exodus Heroes refine | Gigan | Ultima: Exodus | Role Playing | NES | G | Improvement | 1.0 | 30 Nov 2021 |
| Ultima: Exodus Remastered | Fox Cunning | Ultima: Exodus | Role Playing | NES | G, L, T, GP, O | Complete | 2.06 | 29 Dec 2020 |
