| Harvest Moon DS: Claire & Jill Version | unx | Harvest Moon DS | Simulation | NDS | G | Improvement | 1.0 | 17 Dec 2017 |
| Harvest Moon GBC - Progress Diary | Ezzypixel | Harvest Moon | Simulation | GB | O | Improvement | 1.0 | 11 Mar 2023 |
| Harvest Moon: A Proud Life | seangibbz | Harvest Moon: A Wonderful Life | Role Playing | GC | G, T, GP | Improvement | 1.0 | 12 Oct 2019 |
| Harvett Fox in the Mushroom Kingdom | HarvettFox96 | Super Mario Bros. | Action > Platformer | NES | G, T, GP, O | Improvement | 20200101.1 | 31 Dec 2019 |
| Hassle | Inventor | Front Line | Action > Shooter | NES | G | Improvement | 1.0 | 01 Jan 2001 |
| Hasty T-Rex | Leet Sketcher | Final Fantasy III | Role Playing | SNES | G | Bug Fix | 1.2 | 30 Jan 2018 |
| Havoc in Streets of Rage 2 | Metal64 | Streets of Rage 2 | Action > Beat 'Em Up | GEN | O | Improvement | 1.1 | 15 Oct 2017 |
| Haxor's Grocery Run | Jabem | Super Mario Bros. 3 | Action > Platformer | NES | G, L, GP | Improvement | 2.0 | 16 Jun 2020 |
| He Lucathicc's Bouncing Blitzkrieg | KK Hell | Mappy | Action > Platformer | NES | G | Improvement | v2 | 19 Dec 2022 |
| Heart of Chaos | radzo73 | Castlevania: Aria of Sorrow | Role Playing > Action RPG | GBA | S | Improvement | 1.0 | 22 Sep 2020 |
| HeartGold Rebalanced | Frozen Metroid | Pokémon: HeartGold Version | Role Playing | NDS | G, S, T, GP, O | Improvement | 1.9.1 | 12 Feb 2023 |
| Heartless Automap | gzip | The Legend of Zelda | Action Adventure | NES | GP | Improvement | 1.1 | 20 Jul 2022 |
| Heathcliff | Pangent Technologies | Tiny Toon Adventures | Action > Platformer | NES | G, L, T | Improvement | 10.0 | 04 Nov 2020 |
| Heavy Barrel (U) [!] - Color hack. | wolfamancer97 | Heavy Barrel | Action > Shooter | NES | G, T, O | Complete | Final | 31 Jul 2021 |
| Hebereke's Popoitto Restoration | CF | Hebereke's Popoitto | Puzzle | SNES | G, GP, O | Improvement | 1.0 | 21 Apr 2023 |
| Hebereke's Popoon - Pleasant Edition | LucianoTheWindowsFan | Hebereke's Popoon | Puzzle | SNES | S | Improvement | 1.0 | 05 May 2021 |
| Hebereke: Rescue O-Chan | Green Jerry | Super Mario Bros. | Action > Platformer | NES | G, L, T, GP | Complete | 1.0 | 20 Aug 2021 |
| Heckin' Spoop World | DanJer | Super Mario World | Action > Platformer | SNES | G, S, L, T, GP | Complete | 1.1 | 01 Oct 2022 |
| Hell Crawlers | Super Roboprotector | Ms. Pac-Man (Namco) | Action | NES | G, S, L, T | Complete | 1.0 | 01 Jan 2018 |
| Hell Mode Mod | The Komrade | Phantasy Star IV: The End of the Millennium | Role Playing | GEN | T, GP | Improvement | 2.6 | 30 May 2007 |
