| Final Fantasy - Revelations (Core Hack) | Zeemis | Final Fantasy III | Role Playing | SNES | G, T, GP | Improvement | 1.0 | 31 Dec 2008 |
| FFIV-TAY Tileset for FFVI | Zeemis | Final Fantasy III | Role Playing | SNES | G, L | Improvement | 1.0 | 03 Nov 2011 |
| Pokémon Red/Blue Gender Selection | Zeera the Reptoid | Pokémon: Red Version | Role Playing | GB | G, T, O | Improvement | 1.0 | 02 Nov 2018 |
| Zombies Ate my Neighbors Orange Juice | zefennekinfan | Zombies Ate My Neighbors | Action | SNES | G, S, L, T, GP, O | Complete | 1.0 | 12 Jan 2021 |
| Super Mario RPG Plus+ | Zeikar | Super Mario RPG: Legend of the Seven Stars | Role Playing | SNES | G, T, GP | Addendum | 1.0 | 05 Jan 2017 |
| Double Dragon 3 Deluxe | Zeikar | Double Dragon III: The Sacred Stones | Action > Beat 'Em Up | NES | T, GP, O | Improvement | 1.0 | 05 Feb 2017 |
| Pokémon - Shiny Gold | Zel 2.0 | Pokémon: FireRed Version | Role Playing | GBA | G, L, T, GP | Improvement | 4.0 | 13 Jul 2007 |
| Brandish Name Restore | ZeLoz (akaBill) | Brandish | Role Playing > Action RPG | SNES | T | Improvement | 1.5 | 09 Dec 2009 |
| Contra - Zeng Ge Hack | Zeng Ge | Contra | Action > Shooter | NES | L, O | Complete | 1.0 | 03 Aug 2012 |
| Battle City - Zeng Ge Hack | Zeng Ge | Battle City | Action | NES | L, GP | Complete | 4.0 | 25 Dec 2012 |
| Zelda II: Remove big flasheffect | Zenkerdus | Zelda II: The Adventure of Link | Role Playing > Action RPG | NES | O | Improvement | 1.0 | 09 Apr 2011 |
| Spiny Egg Behavior Fix for SMB1 and Lost Levels | ZeroShift | Super Mario All-Stars | Action > Platformer | SNES | GP | Bug Fix | 1.1 | 12 Dec 2016 |
| All Night Nippon: Restore original Spiny behavior | ZeroShift | All Night Nippon Super Mario Bros. | Action > Platformer | FDS | GP | Bug Fix | 1.0 | 21 Mar 2019 |
| Super Mario Bros. by Zerosiki | Zerosiki | Super Mario Bros. | Action > Platformer | NES | G, L | Complete | 2.0 | 01 Jan 2004 |
| Mega Man Reloaded | Zieldak | Mega Man | Action > Platformer | NES | G, S, L, T, O | Complete | 1.4 | 24 Dec 2013 |
| Mega Man V Refined | Zimgief | Mega Man 5 | Action > Platformer | NES | L, GP | Improvement | 1.2 | 26 Oct 2017 |
| No Stage Difficulty Scaling | Zimgief | Gradius III | Action > Shooter | SNES | GP | Improvement | 1.0 | 01 Jul 2019 |
| Balanced Bosses | Zimgief | Sparkster | Action > Platformer | SNES | GP | Improvement | 1.0 | 05 Jan 2020 |
| Castlevania - Balanced Difficulty | Zimgief | Castlevania | Action > Platformer | NES | L, GP | Improvement | 1.0 | 03 Sep 2020 |
| Streets of Rage 2 - DC Comics Heroes Edition | Zinom | Streets of Rage 2 | Action > Beat 'Em Up | GEN | G, GP | Improvement | 1.0 | 22 Mar 2012 |
