| Ultraman Chou Toushi Gekiden | gorgyrip | Action | GB | Fully Playable | 1.0 | 12 Jul 2015 | EN |
| Ultraman Ball | Suicidal Translations | Action > Platformer | GB | Unfinished | 0.99 | 28 Feb 2003 | EN |
| Ultra Baseball Jitsumeiban | VX | Sports | SNES | Fully Playable | 1.04 Final | 22 Mar 2009 | EN |
| Uchuusen Cosmo Carrier | Gil Galad | Action > Shooter | NES | Unfinished | 0.25 | 13 Aug 2002 | EN |
| Uchuujin Tanaka Tarou de RPG Tsukuru GB2 | MageCraft Translations | Game Creation | GB | Unfinished | 0.20 | 11 Mar 2002 | EN |
| Uchuujin Tanaka Tarou de RPG Tsukuru GB2 | PentarouZero | Game Creation | GB | Unfinished | 0.50 | 25 Dec 2002 | EN |
| Uchuu no Kishi Tekkaman Blade | D | Action | SNES | Fully Playable | 1.0 | 03 Oct 2004 | EN |
| U-four-ia: The Saga | BMF54123 | Action > Platformer | NES | Fully Playable | 1.0 | 27 Feb 2013 | EN |
| Twinkle Tale | M.I.J.E.T. | Action > Shooter | GEN | Fully Playable | 070328 | 28 Mar 2007 | EN |
| TwinBee: Rainbow Bell Adventure | Aeon Genesis | Action > Platformer | SNES | Fully Playable | 1.01 | 28 Nov 2013 | EN |
| TwinBee 3: Poko Poko Dai Maou | Demiforce | Action > Shooter | NES | Unfinished | 1.02 | 11 Jan 1998 | EN |
| TwinBee 3: Poko Poko Dai Maou | Demiforce, Stardust Crusaders | Action > Shooter | NES | Fully Playable | 1.01 | 19 Mar 2014 | EN |
| Tuned Heart | Nebulous Translations | Strategy > Turn Based | PC98 | Fully Playable | 1.0 | 30 Aug 2019 | EN |
| Tsuri Kichi Sanpei: Blue Marlin Hen | MrRichard999 | Sports | NES | Fully Playable | 0.94b | 28 Nov 2015 | EN |
| Tsuppari Oozumou | The Spoony Bard | Sports | NES | Unfinished | 1.01 | 01 Mar 1998 | EN |
| Tsukihime | Revolve, Mirror Moon | Visual Novel | PC | Fully Playable | 1.2 | 18 Aug 2008 | EN |
| Treasure Hunter G | obsolete translation, Metalhawk's Translations | Strategy > Turn Based | SNES | Fully Playable | Post Beta 2 | 22 Feb 2004 | EN |
| Treasure Hunter G | RPG Shock! | Strategy > Turn Based | SNES | Unfinished | 0.01 beta | 05 Dec 1997 | EN |
| Treasure Hunter G | Transrelic | Strategy > Turn Based | SNES | Unfinished | 0.15 | 24 Dec 1998 | EN |
| Transformer: Convoy no Nazo | Klarth Aileron | Action > Platformer | NES | Unfinished | 1.00 | 07 Nov 2000 | EN |
