| Triangle Channel Bug Fix | LucianoTheWindowsFan | U-four-ia: The Saga | Action > Platformer | NES | S | Bug Fix | 1.0 | 14 Nov 2020 |
| Trevor hack | Thaddeus | Castlevania: Dracula X | Action > Platformer | SNES | G | Improvement | 1.2 | 16 Jul 2003 |
| Traverse USA - Race of Post-Apocalypse | HarvettFox96 | Zippy Race | Racing | NES | G, T | Complete | 2017.06.23 | 01 Jun 2017 |
| Trauma Center Under the Knife Button Controls Hack | denim | Trauma Center: Under the Knife | Simulation | NDS | GP | Improvement | 1.0 | 30 Nov 2020 |
| Trauma Center Under the Knife 2 Wii Controls Hack | Greiga Master | Trauma Center: Under the Knife 2 | Simulation | NDS | GP | Improvement | 1.01 | 07 Feb 2014 |
| TransFormers: Episode Two: The Return of Unicron | Grimlick | Super Mario Bros. 2 | Action > Platformer | NES | G | Improvement | 1.0 | 20 Jun 1999 |
| Trans Formers Z | S. K. Dumbbus | Choujikuu Yousai: Macross | Action > Shooter | NES | G, T, GP, O | Complete | 1.0 | 17 Apr 2017 |
| Track & Field CNROM to MMC3 | BZK | Track and Field | Sports | NES | O | Improvement | 001 | 08 May 2017 |
| Toxic Crusaders Easy | chronix | Toxic Crusaders | Action > Beat 'Em Up | NES | GP | Improvement | 1.0 | 28 Apr 2019 |
| Tower RE (Mario Tower) | βetaWorld | Super Mario Bros. | Action > Platformer | NES | G, S, L, T, GP, O | Complete | 1.0 | 01 Jan 2004 |
| Tower and Shaft Retail N64 Patch | Zoinkity | Aleck Bordon Adventure 4th Story: Tower & Shaft | Action > Platformer | N64 | O | Improvement | 1.0 | 31 Dec 2014 |
| Touhou Toshi Saga | DASTARD | Final Fantasy Legend | Role Playing | GB | G, T | Complete | 1.0 | 01 Dec 2008 |
| Touhou Otsutoutou | DASTARD | Antarctic Adventure | Racing | NES | G, T | Improvement | 1.0 | 01 Feb 2008 |
| Touhou Mario 1 - Imperishable Night | Wakana | Super Mario World | Action > Platformer | SNES | G, S, L, T, GP, O | Complete | 1.0 | 11 Jul 2013 |
| Touhou Lode Runner | DASTARD | Lode Runner | Puzzle | NES | G, T | Improvement | 1.0 | 01 Jul 2009 |
| Tottemo!! Luckyman part 7 | CHIKO | Mega Man 5 | Action > Platformer | NES | G, S, L, T, GP, O | Complete | 1.0 | 01 Jan 2010 |
| Tottemo!! Luckyman part 6 | CHIKO | Mega Man 5 | Action > Platformer | NES | G, S, L, T, GP, O | Complete | 1.0 | 01 Jan 2010 |
| Tottemo!! Luckyman part 5 | CHIKO | Mega Man 5 | Action > Platformer | NES | G, S, L, T, GP, O | Complete | 1.0 | 01 Jan 2010 |
| Tottemo!! Luckyman part 4 | CHIKO | Mega Man 5 | Action > Platformer | NES | G, S, L, T, GP, O | Complete | 1.0 | 01 Jan 2010 |
| Tottemo!! Luckyman part 3 | CHIKO | Mega Man 5 | Action > Platformer | NES | G, S, L, T, GP, O | Complete | 1.0 | 01 Jan 2010 |
