| Trog Famicom 2P | nattou | Trog! | Action | NES | O | Improvement | 1.0 | 10 Mar 2020 |
| Trog! NES - Fair PvP hack | nattou | Trog! | Action | NES | GP | Improvement | 1.0 | 24 Mar 2020 |
| Trip World Casual Mode | llakssz | Trip World | Action > Platformer | GB | G, GP, O | Improvement | 1.0 | 03 Oct 2019 |
| 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 |
| Trauma Center Under the Knife Button Controls Hack | denim | Trauma Center: Under the Knife | Simulation | NDS | GP | Improvement | 1.0 | 30 Nov 2020 |
| 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 |
| Top Gun MMC5 Patch | Dracula X | Top Gun | Simulation | NES | O | Improvement | 1.2 | 18 Aug 2019 |
| Top Gun (Japan) MMC5 Patch | Dracula X | Top Gun | Simulation | NES | O | Improvement | 1.2 | 18 Aug 2019 |
| Top Gear 2 MSU-1 | DarkShock | Top Gear 2 | Racing | SNES | S | Improvement | 1.1 | 17 May 2015 |
| Top Gear Extreme Edition | SalvadorC17 | Top Gear | Racing | SNES | GP, O | Improvement | 1.0 | 14 Mar 2020 |
| Tomb Raider IV - Italian Audio Fix | SuiKaze Raider | Tomb Raider: The Last Revelation | Action Adventure | PSX | S | Bug Fix | 1.1.0.0 | 05 Sep 2016 |
| Tom and Jerry: Frantic Antics - Improvement | Ti | Tom and Jerry - Frantic Antics | Action > Platformer | GEN | S, O | Improvement | v2 | 26 Jul 2020 |
| Tom & Jerry (and Tuffy) - Cheese It! | BZK | Tom & Jerry: The Ultimate Game of Cat and Mouse! | Action > Platformer | NES | GP | Improvement | 001 | 25 Sep 2016 |
| Tokyo Xtreme Racer 2 Music Mod | Rolly | Tokyo Xtreme Racer 2 | Racing | DC | S | Improvement | 1.0 | 10 Oct 2006 |
| Toki / JuJu Densetsu arcade style colors | fusaru | Toki: Going Ape Spit | Action > Platformer | GEN | G | Improvement | 1.00 | 31 Mar 2017 |
| toki enhanced color + sprite | sebastianangel | Toki | Action | NES | G | Improvement | 1.1 | 03 Jul 2020 |
| Buster Busts Loose Train Bugfix | KingMike's Translations | Tiny Toon Adventures: Buster Busts Loose! | Action > Platformer | SNES | GP | Bug Fix | 1.0 | 05 Oct 2008 |
| Remix of Tiny Toon Adventures | Razor | Tiny Toon Adventures | Action > Platformer | NES | L | Complete | 1.2 | 25 Dec 2017 |
| Super Mario Adventures | hiro1112 | Tiny Toon Adventures | Action > Platformer | NES | G, T | Complete | 1.0 | 03 May 2005 |
