Sonic 3 & Knuckles
Sega Genesis · 2026
Sonic 3, Sonic & Knuckles, and the combined lock-on game through SegaGenesisRecomp.
Sonic 3 & Knuckles is really three builds in one repository: Sonic 3 alone, Sonic & Knuckles alone, and the combined lock-on game.
All three are supported. The combined Sonic 3 & Knuckles build is the recommended way to play because it matches how most people think of the complete game.
For SegaGenesisRecomp, this is useful framework work because the lock-on behavior changes how the cartridge memory is mapped.
Playable status
Playable alpha. All three variants build and run: Sonic 3, Sonic & Knuckles, and Sonic 3 & Knuckles.
Windows builds are available for all three variants. An experimental Linux AppImage of the combined build and a macOS build are also available. Each variant is built from a ROM dump you provide, one per mode.
What the recomp adds
The launcher supports the separate variants and their input/display settings.
Experimental 16:9 widescreen is available.
Sources
- SegaGenesisRecomp Gets Game #2: Sonic the Hedgehog 2 (1379.tech)
- Project README and release notes (GitHub)