Mega Drive / Genesis decomps & recomps

11 community projects rebuild Mega Drive / Genesis software: 0 static recompilations, 9 decompilations and 1 port, rewrites and clean-room builds, plus 1 apps, tools and preservation projects. Most-starred first; GitHub data as of 2026-10-18.

▶ 2 playable in your browser Decomp vs recomp

Decompilations

Project	Original	Status	Made	Latest	Stars
s1disasm playable	Sonic the Hedgehog 1991	complete	Human-led	v26.08 Aug 1, 2026	453
s2disasm playable	Sonic the Hedgehog 2 1992	complete	Human-led	—	318
Sonic Clean Engine (S.C.E.)	Sonic 3 & Knuckles 1994	released	Human-led	v1.3 Aug 6, 2026	62
SF2DISASM	Shining Force II 1993	wip	Human-led	—	55
Kid Chameleon disassembly	Kid Chameleon 1991	wip	Human-led	—	42
Sonic 1 Prototype Disassembly	Sonic the Hedgehog (prototype) 1991	stalled	Human-led	—	29
SF1DISASM	Shining Force 1992	wip	Human-led	—	23
Puyo Puyo disassembly	Puyo Puyo 1992	wip	Human-led	—	16
Toejam & Earl Disassembly	ToeJam & Earl 1991	stalled	Human-led	—	12

Ports, rewrites & clean-room builds

Project	Original	Status	Made	Latest	Stars
Paprium for Analogue Pocket	Paprium 2020	released	Not stated	0.2.6 Oct 12, 2026	16

RE tooling

Project	Original	Status	Made	Latest	Stars
sega2asm	Sega Genesis / Mega Drive ROMs	released	Human-led	v1.0.2 Mar 28, 2026	40

Can I play Mega Drive / Genesis games natively on PC?

Not as finished native ports yet; the 10 projects below show how far each has got.

What is the difference between a Mega Drive / Genesis decomp and a recomp?

A decompilation rewrites the game's machine code as readable C that rebuilds the original; a static recompilation translates the machine code mechanically into C/C++ that runs natively. Recomps arrive faster; decomps are easier to mod and port.

Are these Mega Drive / Genesis projects legal?

They publish code only, and the ones that need game data ask you to supply it from a copy you own. Recomp never links to ROMs, ISOs or game files.