Sonic the Hedgehog SMS Recomp

PC port of Sonic the Hedgehog

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: Sonic the Hedgehog
AI Use: AI-assistedAn AI coding tool is credited as co-author on 9 of the repository's 14 commits. Source
Source Code: GitHub
Page Updated: 18 October 2026

Platform Support

Windows

ScreenshotsView All (6)

What you need: A ROM of Sonic the Hedgehog for the Master System, dumped from your own cartridge.

Overview

Sonic the Hedgehog SMS Recomp is a native Windows port of the 8-bit Sonic the Hedgehog for the Master System, made by mstan by statically recompiling the game’s Z80 code into C, with the video and sound chips emulated around it.

It is an early pre-release, started from the command line with the ROM path and a window scale. So far the output matches the original byte for byte over the title screen and the attract demo; the rest of the game is not yet verified.

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

The download contains no game data. It needs a Sonic the Hedgehog ROM for the Master System, dumped from your own cartridge.

How to Set It Up

Download the Windows zip and extract it. Keep SDL2.dll next to the executable.
Start it from a command prompt with the path to your ROM, for example SonicTheHedgehogSMSRecomp.exe path\to\rom --window 3.
--window sets the window scale (3 or 4 suit most screens).