Sonic the Hedgehog SMS Recomp
PC port of Sonic the Hedgehog
- RecompilationPort Type
- mstanDeveloper
- 2 Nov 2026Page Updated
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.dllnext to the executable. - Start it from a command prompt with the path to your ROM, for example
SonicTheHedgehogSMSRecomp.exe path\to\rom --window 3. --windowsets the window scale (3 or 4 suit most screens).
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Download Sonic the Hedgehog SMS Recomp
What's new in v0.0.4Sonic SMS v0.0.4 - native HLE and faithful 16x
Native CPU/event execution, exact PSG block synthesis and faithful 16x GPU rendering. Original tile pixels stay sharp with no smoothing or invented detail. The GPU consumes resident tile-row jobs; enhanced resolution does not require a CPU enhanced framebuffer or scale-dependent uploads.
The packaged Windows x64 build preserves the existing assisted coverage: all29 routes execute without fallback and all89 rendered native/interpreter checkpoints agree. The final6000-frame route has exact state/timeline/PCM against the qualified native checkpoint; every16x pixel matches native output. Owner visual checks passed. This remains a pre-release with assisted coverage, not a claim of a complete unassisted playthrough.
Extract every file. Drag your supported owned ROM onto Play.cmd for native resolution or Play 16x.cmd for faithful16x. Normal audio is enabled; unsupported GPU drivers fall back to native output. No ROM is included. Engine and consumer commits are pinned in the source tag. SHA256SUMS is provided for the ZIP.
8c698f84dd60bd35831b7f3c02728a8ccb5c9431886237bca46bc866868d192c
