Sega Genesis / Mega Drive / PC (Windows and DOS) · 1991

Sonic the Hedgehog

2 tracked projects.

Developer: Sonic Team
Publisher: Sega
Released: 1991
Series: Sonic the Hedgehog
Genre: Platformer
Also known as: Sonic 1

s1disasm

Matching completeUnverified

Progress is not measured for this project: no machine-readable progress source was found in its repository or on the public trackers. Listed from public claims or descriptions. Progress is not measured, or no editor has confirmed it yet. Treat figures and status as provisional.

Platform: Sega Genesis / Mega Drive
Approach: Matching disassembly
Status: Matching complete
Toolchain: AS (Macroassembler)
Last commit: 17 Oct 2026 (3 days ago)
Stars: 452
Contributors: 42

Repositories

github.com/sonicretro/s1disasm
Sonic 1 Disassembly
Stars
452
Last push
17 Oct 2026
Contributors
42
State
Active

Genesis Annotated assembly that rebuilds the original program; common for 8-bit and 16-bit systems.

Sonic 1 (2013) decompilation

PC port availableUnverified

Decompilation of the 2013 mobile remaster; game data comes from the user’s own copy.

Platform: PC (Windows and DOS)
Approach: Non-matching decompilation
Status: PC port available
Target build: 2013 remaster (Retro Engine v4)
Toolchain: Modern compilers
Licence: Other
Last commit: 6 Sep 2026 (1 month ago)
Stars: 1,149
Contributors: 51

Repositories

github.com/RSDKModding/RSDKv4-Decompilation
A complete decompilation of Sonic 1 & Sonic 2 (2013) & Retro Engine (v4)
Stars
1,149
Last push
6 Sep 2026
Contributors
51
State
Active

PC Functionally equivalent source that does not reproduce the original binary byte for byte.