| Metal Gear - text speed | rainponcho | Metal Gear | Action | NES | O | Improvement | 0.1 | 21 May 2017 |
| Metal Gear - Personal Area Network | Turambar | Metal Gear | Action | NES | GP | Improvement | 1.0 | 09 Jun 2015 |
| Metal Blades for Mega Man 3 | insectduel | Mega Man 3 | Action > Platformer | NES | G, GP, O | Improvement | 1.0 | 30 Sep 2008 |
| Metafight EX - Backwards Compatibility Patch | FantomLion | Blaster Master: Enemy Below | Action Adventure | GB | O | Improvement | 1.0 | 15 Apr 2017 |
| Menu Upgrades | abw | Dragon Warrior II | Role Playing | NES | T | Improvement | 1.0.2 | 17 Oct 2020 |
| Menu Malarky | Leet Sketcher | Final Fantasy III | Role Playing | SNES | GP | Bug Fix | 1.3 | 17 Nov 2017 |
| Menu Hack | Trunaur68 | Metroid: Zero Mission | Action > Platformer | GBA | GP | Improvement | 1.0 | 07 Dec 2007 |
| Mendel Palace Vapor | Player 1 | Mendel Palace | Action | NES | G, L, T, O | Complete | 1.0 | 27 Aug 2018 |
| Meirin X | DASTARD | Kung Fu | Action > Beat 'Em Up | NES | G, T | Improvement | 1.0 | 01 Jan 2009 |
| MegaMari | Unknown | Mega Man | Action > Platformer | NES | G, L | Complete | 1.0 | 27 Dec 2008 |
| MegaManX3 - No armor GFX | XStuff | Mega Man X3 | Action > Platformer | SNES | G | Improvement | 1.0 | 17 Jul 2020 |
| MegaManX2 - No armor GFX | XStuff | Mega Man X2 | Action > Platformer | SNES | G | Complete | 1.0 | 13 Nov 2018 |
| Megaman Z | Falchion22 | Mega Man X | Action > Platformer | SNES | G, T | Improvement | 2.0 | 08 Jun 2016 |
| Megaman Xtreme VWF edition | evo | Mega Man Xtreme | Action > Platformer | GB | G | Improvement | 1.10 | 02 Sep 2005 |
| Megaman X: Command Mission Intro Replacement | HaqQ | Mega Man X: Command Mission | Role Playing | GC | G, S, O | Improvement | 1.0 | 19 Mar 2021 |
| Megaman X: Capsule Remix | PowerPanda | Mega Man X | Action > Platformer | SNES | L, GP, O | Improvement | 3.0 | 15 Mar 2019 |
| Megaman X - Generation (dashfix) | pianohombre | Mega Man X | Action > Platformer | SNES | G | Addendum | 1.1 | 16 Apr 2017 |
| Megaman Wily Wars SRAM Save Hack | MottZilla | Mega Man: The Wily Wars | Action > Platformer | GEN | O | Improvement | 1.0 | 30 Jan 2009 |
| MegaMan Wily Wars SRAM hack Mini Ver | Plombo | Mega Man: The Wily Wars | Action > Platformer | GEN | O | Improvement | 1.0 | 25 Feb 2021 |
| Megaman V JAP Style without Subtitle | darthvaderx | Mega Man 5 | Action > Platformer | NES | G | Addendum | 1.0a | 11 Dec 2020 |
