| Metal Wolf Chaos | NemsMole | Simulation | XBOX | Fully Playable | 1.0 | 08 Jul 2011 | EN |
| Metroid | AlanMidas | Action Adventure | FDS | Fully Playable | cant.hack | 25 Feb 2001 | EN |
| Metroid | Jordiway73 | Action Adventure | FDS | Addendum | 1.1 | 06 Aug 2016 | EN |
| Mezase! Top Pro: Green ni Kakeru Yume | Immutable | Sports | NES | Unfinished | 1.0 | 20 Nov 2014 | EN |
| Mickey to Donald: Magical Adventure 3 | RPGONE | Action > Platformer | SNES | Fully Playable | 1.5 | 18 Jun 2020 | EN |
| Might and Magic: Book Two | MrRichard999 | Role Playing | SNES | Fully Playable | 1.0 | 03 Jul 2018 | EN |
| Minelvaton Saga: Ragon no Fukkatsu | aishsha | Role Playing | NES | Fully Playable | 1.05 | 28 Jan 2020 | EN |
| Mini Putt | Klarth Aileron | Sports | NES | Fully Playable | 1.00 | 27 Jul 2000 | EN |
| Minna no Taabou no Nakayoshi Daisakusen | Suicidal Translations | Puzzle | NES | Fully Playable | 1.01 | 28 Feb 2003 | EN |
| Minna no Taabou no Nakayoshi Daisakusen | hap | Puzzle | NES | Addendum | 1.01 | 18 Feb 2006 | EN |
| Miracle Girls | Some Good Shit Translations, EsperKnight | Action > Platformer | SNES | Unfinished | 1.0 | 16 Jul 2000 | EN |
| Miracle Girls | RPGONE | Action > Platformer | SNES | Fully Playable | 1.1 | 10 Feb 2019 | EN |
| Mirai Senshi: Lios | Aeon Genesis | Strategy > Turn Based | NES | Fully Playable | 1.00 | 05 Aug 2000 | EN |
| Mirai Shinwa Jarvas | Stardust Crusaders, aishsha | Role Playing > Action RPG | NES | Fully Playable | 1.0 | 24 Dec 2010 | EN |
| Mississippi Satsujin Jiken | GAFF Translations | Adventure | NES | Fully Playable | 1.00 | 20 Jul 2017 | EN |
| Mitsume ga Tooru | The Spoony Bard | Action > Platformer | NES | Fully Playable | 1.01 | 25 Jun 1998 | EN |
| Mitsume ga Tooru | Stardust Crusaders | Action > Platformer | NES | Fully Playable | 1.0 | 01 Nov 2019 | EN |
| Mitsume ga Tooru | Arrogant | Action > Platformer | NES | Fully Playable | 1.1 | 19 Oct 2019 | EN |
| Mizuki Shigeru no Youkai Shashinkan | WyndCrosser | Role Playing | NGPC | Unfinished | 0.01 | 01 Dec 2013 | EN |
| Mo Shou Shi Jie E Mo Lie Ren | pacnsacdave | Role Playing | NES | Fully Playable | 1.0 | 04 Mar 2020 | EN |
