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Ymir vs MAME: catalog facts
Ymir	MAME
Free The open-source emulator is available without a license fee.	Free Free and open source under the GPL 2.0. No ROMs are included.
Windows, macOS, Linux	Windows, macOS, Linux
High Saturn compatibility with a modern, usable interface Save states and debugging tools that older Saturn emulators lack	Covers thousands of arcade, console and computer systems in one program Accuracy is the stated priority, so behaviour matches the original hardware
Young project, so behaviour changes between releases Saturn emulation is demanding on CPU	Accurate emulation of later hardware needs a genuinely fast machine ROM sets must match the exact version MAME expects, which frustrates newcomers
Downloadable app	Downloadable app
Open source	Open source
License not stated	License: GPL-2.0
Not stated if an account is needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked September 21, 2026

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