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Genesis Plus vs jgenesis: catalog facts
Genesis Plus	jgenesis
Free The emulator is a free download; the Emulator Enhancer add-on is shareware.	Free Free to download from GitHub.
macOS	Windows, Linux, Web
Accurate emulation of original Genesis hardware Native on Apple silicon	Several Sega consoles plus the SNES in one emulator Runs in a browser through WebAssembly
Gamepads and full screen need the paid Emulator Enhancer add-on macOS only	macOS is not officially supported Smaller project than the established multi-system emulators
Downloadable app	Downloadable app, Web application
Closed source	Closed source
License not stated	License not stated
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 1, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.