| Toad's Christmas Adventure | Darkdata-Systemlogoff | Super Mario Bros. | Action > Platformer | NES | G, S, L, T, GP | Complete | 1.5 | 23 Dec 2008 |
| Toad's Adventure | Omniverse | Super Mario Bros. | Action > Platformer | NES | G, S, L, T | Complete | 2.0 | 06 Jul 2005 |
| TO-TKOL Rebalance | Chiester | Tactics Ogre: The Knight of Lodis | Strategy > Turn Based | GBA | GP, O | Improvement | 1.0 | 23 Mar 2020 |
| TMNT: Tournament Fighters improved colors | fusaru | Teenage Mutant Ninja Turtles: Tournament Fighters | Action > Beat 'Em Up | GEN | G | Improvement | 1.00 | 26 Sep 2016 |
| TMNT: Tournament Fighters - Technodrome Hack | BalinDMK | Teenage Mutant Ninja Turtles: Tournament Fighters | Action > Fighting | NES | G, L | Improvement | 7.0 | 08 Mar 2015 |
| TMNT3 Arena | Lomax | Teenage Mutant Ninja Turtles III: The Manhattan Project | Action > Beat 'Em Up | NES | GP | Complete | 1.0 | 29 Oct 2015 |
| TMNT3 - difficulty levels select | Ti | Teenage Mutant Ninja Turtles III: The Manhattan Project | Action > Beat 'Em Up | NES | O | Improvement | 1.0 | 14 Dec 2014 |
| TMNT of Rage - The Final Shell Shock & Re-Shelled | eskayelle | Streets of Rage 2 | Action > Beat 'Em Up | GEN | G, S, L, T, GP | Complete | 1.999.1 | 23 Dec 2020 |
| TMNT II - The Arcade Game Revamped | SCD | Teenage Mutant Ninja Turtles II: The Arcade Game | Action > Beat 'Em Up | NES | G, T, GP | Improvement | Final | 27 May 2017 |
| TMNT Hyperstone Heist With Friendly Fire | bgvanbur | Teenage Mutant Ninja Turtles: The Hyperstone Heist | Action > Beat 'Em Up | GEN | GP | Improvement | 1.0 | 05 Oct 2016 |
| TMNT 4 - Increase Bosses Difficulty | Docrow | Teenage Mutant Ninja Turtles IV: Turtles in Time | Action > Beat 'Em Up | SNES | GP | Improvement | 1.0a | 13 May 2018 |
| TKB Super Mario Bros. Volume II | TKB | Super Mario Bros. | Action > Platformer | NES | G, L, T | Complete | 1.0 | 19 Feb 2010 |
| TKB Super Mario Bros. | TKB | Super Mario Bros. | Action > Platformer | NES | L, T | Complete | 1.0 | 20 Feb 2009 |
| Title Screen Star Field | TRIFORCE89 | Lagrange Point | Role Playing | NES | G, O | Bug Fix | 1.0 | 25 Mar 2018 |
| Title Screen Restoration and Minor Graphics Fixes | LiquidMarble | Mega Man 4 | Action > Platformer | NES | G | Improvement | 1.0 | 08 Jan 2021 |
| Tiny Toon Switcher | bogaabogaa | Tiny Toon Adventures | Action > Platformer | NES | GP | Improvement | 1.0 | 02 Nov 2020 |
| Tiny Toon Adventures stage select hack | DANGER X | Tiny Toon Adventures | Action > Platformer | NES | O | Improvement | 1.0 | 01 Feb 2016 |
| Tina's Adventure Island IV | Zynk Oxhyde | Takahashi Meijin no Bouken Jima IV | Action > Platformer | NES | G, T | Improvement | 1.0 | 28 Dec 2019 |
| Tina's Adventure Island III | Zynk Oxhyde | Adventure Island III | Action > Platformer | NES | G | Improvement | 1.0 | 15 Nov 2019 |
| Tina's Adventure Island II | Zynk Oxhyde | Adventure Island II | Action > Platformer | NES | G, T | Improvement | 1.2 | 28 Dec 2019 |
