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BlastEm vs Genesis Plus GX: catalog facts
BlastEm	Genesis Plus GX
Free Free and open source under the GPL.	Free The open-source emulator is available without a license fee.
Windows, macOS, Linux	Windows, macOS, Linux
Cycle accuracy that handles demos other emulators fail Fast enough for old hardware despite the accuracy	One core covers Mega Drive, Sega CD, Master System, Game Gear and SG-1000 Accurate sound emulation, including the Sega CD's PCM
Small project with occasional releases Interface is minimal	Usually run through RetroArch rather than as a standalone application
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0	License not stated
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked September 22, 2026

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