LeafGreen Recomp

PC port of Pokémon FireRed and LeafGreen

RecompilationPort Type
mstanDeveloper
18 Oct 2026Page Updated

Details

Developer: mstan
Port Type: RecompilationA tool translated the game's original machine code into C automatically, which was then built as a native PC program.
Game: Pokémon FireRed and LeafGreen
AI Use: AI-assistedAn AI coding tool is credited as co-author on 18 of the repository's 28 commits. Source
Source Code: GitHub
Page Updated: 18 October 2026

Platform Support

Windows

ScreenshotsView All (6)

Pokémon FireRed and LeafGreen Screenshot 01

Pokémon FireRed and LeafGreen Screenshot 02

Pokémon FireRed and LeafGreen Screenshot 03

Pokémon FireRed and LeafGreen Screenshot 04

Pokémon FireRed and LeafGreen Screenshot 05

Pokémon FireRed and LeafGreen Screenshot 06

What you need: A ROM of Pokémon LeafGreen (USA) v1.0 and a Game Boy Advance BIOS dump, both from your own cartridge and console.
SHA-1 of a correct dump:
Pokémon LeafGreen (USA) v1.0: 574fa542ffebb14be69902d1d36f1ec0a4afd71e

Overview

LeafGreen Recomp is a native Windows port of Pokémon LeafGreen for the Game Boy Advance, made by mstan by statically recompiling the game’s ARM and Thumb code into C, with the GBA video and sound hardware emulated around it.

FireRed and LeafGreen are built from one project as separate programs. It is an early release.

The author says AI tools were used heavily in making it.

The download contains no game data. It needs Pokémon LeafGreen (USA) v1.0, dumped from your own cartridge, and a BIOS dump from your own Game Boy Advance.

How to Set It Up

Download the Windows zip and extract it.
Run the program and point it at your Pokémon LeafGreen ROM and your GBA BIOS file.
Change widescreen and the other options in the settings.