| Makaitoushi Sa-Ga Title Patch | Killa B | Final Fantasy Legend | Role Playing | GB | G | Improvement | 1.0 | 14 Apr 2007 |
| Makaimura Arcade Conversion - Fair Play | lancuster | Ghosts 'n Goblins | Action > Platformer | NES | L, T, GP, O | Addendum | 1.0 | 09 Dec 2016 |
| Makaimura Arcade Conversion | 2CH | Ghosts 'n Goblins | Action > Platformer | NES | G | Improvement | 1.0 | 01 Jan 2010 |
| Makai Island Restoration | SCD | Makai Island | Action Adventure | NES | G, T, GP | Improvement | Final | 24 Oct 2019 |
| Majou Densetsu II: Daimashikyou Galious SRAM save patch | RGBA_CRT | Majou Densetsu II: Daimashikyou Galious | Role Playing > Action RPG | NES | O | Improvement | 1.0 | 26 Mar 2018 |
| Majora's Mask Redux | Maroc | The Legend of Zelda: Majora's Mask | Action Adventure | N64 | GP | Improvement | 2.0 | 24 Nov 2020 |
| Major Fixes for E.V.O.: Search for Eden | SCD | E.V.O.: Search for Eden | Role Playing > Action RPG | SNES | G, T, GP | Improvement | Final | 16 Jul 2017 |
| Main Script F2 Fix | abw | Dragon Warrior II | Role Playing | NES | O | Improvement | 1.0 | 20 Oct 2019 |
| Magitek Madness | Leet Sketcher | Final Fantasy III | Role Playing | SNES | G | Bug Fix | 1.2 | 18 Mar 2017 |
| Magician | Onion Knight BR | Nuts & Milk | Action | NES | G, T | Improvement | 1.0 | 10 Sep 2012 |
| Magical Tetris Challenge (Arcade) Conversion Patches | Zoinkity | Magical Tetris Challenge (Arcade) | Puzzle | ARC | O | Improvement | 2.0 | 19 Oct 2021 |
| Magical Rockman | Kozakurainko | The Krion Conquest | Action > Platformer | NES | G, O | Improvement | 1.0 | 21 Feb 2006 |
| Magical Quest 3 FastROM | MaxwelOlinda | Mickey to Donald: Magical Adventure 3 | Action > Platformer | SNES | O | Improvement | 1.0 | 11 Nov 2021 |
| Magical Quest 3 - No Letterbox Hack | RPGONE | Mickey to Donald: Magical Adventure 3 | Action > Platformer | SNES | GP | Improvement | 1.0 | 18 Jun 2020 |
| Magical Quest 3 - Nephew Colors Hack | RPGONE | Mickey to Donald: Magical Adventure 3 | Action > Platformer | SNES | G | Improvement | 1.0 | 18 Oct 2016 |
| Magical Herb | Kethinov | Secret of Mana | Role Playing > Action RPG | SNES | GP | Improvement | 1.3 | 08 Nov 2019 |
| Magic Kids | keithisgood | M.C. Kids | Action > Platformer | NES | G, T | Improvement | 1.0 | 05 Feb 2013 |
| Magic Jewelry II to MMC3 | BZK | Magic Jewelry II | Puzzle | NES | O | Improvement | 001 | 03 Oct 2016 |
| Magic Carpet 1001 MMC3 Port | BinaryLab | Magic Carpet 1001 | Action > Shooter | NES | O | Improvement | 1.0 | 06 Dec 2021 |
| Macross: Scrambled Valkyrie - Overtech Edition | advancedpillow | Choujikuu Yousai Macross - Scrambled Valkyrie | Action > Shooter | SNES | GP | Improvement | 1.1 | 26 Jan 2022 |
