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SMS Plus vs Retro Virtual Machine: catalog facts
SMS Plus	Retro Virtual Machine
Freemium The emulator is a free download; the Emulator Enhancer add-on is shareware.	Free Downloadable from the official site; no price is listed.
macOS	Windows, macOS, Linux
Accurate Master System and Game Gear emulation YM2413 FM sound and CodeMasters mapper support	Covers several 8-bit computers and consoles in one program PAL and NTSC models with correct aspect ratio
macOS only Gamepad and full screen support need the paid Emulator Enhancer	Releases are infrequent Limited to 8-bit era systems
Downloadable app	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 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.