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jgenesis vs Genesis Plus: catalog facts
jgenesis	Genesis Plus
Free Free to download from GitHub.	Free The emulator is a free download; the Emulator Enhancer add-on is shareware.
Windows, Linux, Web	macOS
Several Sega consoles plus the SNES in one emulator Runs in a browser through WebAssembly	Accurate emulation of original Genesis hardware Native on Apple silicon
macOS is not officially supported Smaller project than the established multi-system emulators	Gamepads and full screen need the paid Emulator Enhancer add-on macOS only
Downloadable app, Web application	Downloadable app
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 1, 2026	Official website Full listing and sources Checked October 2, 2026

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