| Metafight EX - Backwards Compatibility Patch | FantomLion | Blaster Master: Enemy Below | Action Adventure | GB | O | Improvement | 1.0 | 15 Apr 2017 |
| Metal Blades for Mega Man 3 | insectduel | Mega Man 3 | Action > Platformer | NES | G, GP, O | Improvement | 1.0 | 30 Sep 2008 |
| Metal Force Mapper Hacks | MottZilla | Metal Force | Action > Platformer | NES | O | Improvement | 1.0 | 16 Feb 2022 |
| Metal Gear - Personal Area Network | Turambar | Metal Gear | Action | NES | GP | Improvement | 1.0 | 09 Jun 2015 |
| Metal Gear - text speed | rainponcho | Metal Gear | Action | NES | O | Improvement | 0.1 | 21 May 2017 |
| Metal Gear - UNROM to MMC3 Mapper | infidelity | Metal Gear | Action | NES | O | Improvement | 1.0 | 17 Sep 2013 |
| Metal Gear 1 - Improvements | FRS | Metal Gear (MSX2) | Action | MSX | O | Improvement | 1.0 | 07 Mar 2011 |
| Metal Gear 2 - Turbo Fix | FRS | Metal Gear 2: Solid Snake | Action Adventure | MSX | O | Improvement | 1.1 | 15 Jul 2011 |
| Metal Gear DX | LastduaL | Metal Gear | Action | NES | G | Improvement | 1.0 | 07 Mar 2017 |
| Metal Gear MMC5 Patch+Compact-Mapper | Dracula X | Metal Gear | Action | NES | O | Improvement | 1.2.1 | 10 May 2022 |
| Metal Gear MSX + Style | Mister Xiado | Metal Gear | Action | NES | G, T | Improvement | 1.0 | 08 Aug 2018 |
| Metal Slader Glory: DX - Debug Mode Enabled | FCandChill | Metal Slader Glory: Director's Cut | Adventure | SNES | O | Improvement | 1.0 | 09 Feb 2019 |
| Metal Slug | 4l3j4ndr0 | Terrifying 911 | Action > Platformer | GB | G, T, O | Improvement | 1.1 | 19 Apr 2018 |
| Metal Slug - Super Devil Rank Fix | Miagui | Metal Slug - Super Vehicle-001 | Action > Shooter | SAT | O | Bug Fix | 1.0 | 11 Sep 2022 |
| Metal Slug 2 CD Turbo - Slowdown Reduction Patch | SmokeMonster | Metal Slug 2 | Action > Shooter | NGCD | GP | Bug Fix | 1.0 | 13 Dec 2015 |
| Metal Slug 2 NoBGM | Koston | Metal Slug 2 | Action > Shooter | ARC | S | Improvement | 1.0 | 18 Sep 2017 |
| Metal Slug X - Red Blood | Ortew | Metal Slug X | Action > Shooter | PSX | G | Improvement | 1.0 | 11 Apr 2022 |
| Metal Slug XX-Double Seven Edition | chamcham425 | Metal Slug XX | Action > Shooter | PSP | L, GP | Improvement | 1.0 | 30 Dec 2022 |
| Metal Sonic Hyperdrive | Lone Devil | Sonic the Hedgehog | Action > Platformer | GEN | G, S, L, T, GP, O | Complete | 2.1.2 | 02 Sep 2014 |
| Metal Sonic Hyperdrive (2011) | Lone Devil | Sonic the Hedgehog | Action > Platformer | GEN | G, S, L, T, GP, O | Complete | 4.0 Final | 31 Oct 2011 |
