Title  | Released By | Original Game | Genre | Platform | Mods | Category | Ver | Date |
|---|---|---|---|---|---|---|---|---|
| Karnov - Hack by LANCUSTER | lancuster | Karnov | Action > Platformer | NES | G, L, T, GP, O | Improvement | 1.0 | 27 Jun 2016 |
| Karate Champed | S. K. Dumbbus | Karate Champ | Action > Fighting | NES | G, T, O | Improvement | 1.0 | 26 Jan 2017 |
| Kanji Mario Bros | Mikachu | Super Mario Bros. | Action > Platformer | NES | G, L, T | Complete | 1.0 | 01 Jan 2003 |
| Kana Kong Arcade (US set 1) | 125scratch | Donkey Kong | Action > Platformer | ARC | G | Improvement | 1.01 | 26 Mar 2022 |
| Kana Kong | DASTARD | Donkey Kong | Action > Platformer | NES | G | Improvement | 1.0 | 01 Feb 2008 |
| Kamikaze Mario DX+ | 79 | Super Mario Bros. | Action > Platformer | NES | G, S, L, T, GP, O | Complete | 1.82 | 25 Nov 2004 |
| Kamikaze DX Clothed | Proveaux | Super Mario Bros. | Action > Platformer | NES | G | Addendum | 1.0 | 19 Aug 2015 |
| Kamikaze DX | 79 | Super Mario Bros. | Action > Platformer | NES | G, L, T | Complete | 1.0 | 01 Jan 2003 |
| Kamikaze Bros. 3 | Barbarian | Super Mario Bros. 3 | Action > Platformer | NES | L, T | Complete | 1.0 | 26 Oct 2016 |
| Kamikaze 3 - Luigi's Ghost House Clothed | Proveaux | Super Mario Bros. | Action > Platformer | NES | G, T | Addendum | 1.0 | 30 Aug 2018 |
| Kamikaze 3 - Luigi's Ghost House | 79 | Super Mario Bros. | Action > Platformer | NES | G, S, L, T, GP | Complete | 1.0 | 01 Jan 2001 |
| Kamek's Island | Gamma V | Super Mario World | Action > Platformer | SNES | G, S, L, T, GP, O | Complete | 1.7 | 18 Sep 2015 |
| Kakutou hockey | Gyula Dóczy | Ike Ike! Nekketsu Hockey Bu: Subette Koronde Dairantou | Sports | NES | G, L, T, O | Improvement | 2.0 | 13 May 2015 |
| Kaizo Vania | Caracol20 | Castlevania | Action > Platformer | NES | L | Improvement | 1.0 | 21 Oct 2020 |
| Kaizo Superman | DANGER X | Superman | Action Adventure | NES | G, L, GP | Improvement | 1.4 | 07 Jun 2015 |
| Kaizo Ship | Miguel20 | Super Mario World | Action > Platformer | SNES | G, S, L, T | Complete | Final | 01 Jan 2012 |
| Kaizo Mario World 3 | Takemoto | Super Mario World | Action > Platformer | SNES | L, T | Complete | 3.1 | 01 Jan 2012 |
| Kaizo Mario World 2 | Takemoto | Super Mario World | Action > Platformer | SNES | L, T | Complete | 2.0 | 01 Jan 2007 |
| Kaizo Mario World 1 | Takemoto | Super Mario World | Action > Platformer | SNES | L, T | Complete | 1.0 | 01 Jan 2007 |
| Kaizo Mario Bros 3 | Hunter W | Super Mario Bros. 3 | Action > Platformer | NES | G, L, T, GP | Complete | 1.0 | 04 Jul 2015 |
