Compare software

Missingno vs MAME: catalog facts
Missingno	MAME
Free Free and open source under the MIT licence.	Free Free and open source under the GPL 2.0. No ROMs are included.
Linux	Windows, macOS, Linux
Combines emulation with a debugger Supports more than one system	Covers thousands of arcade, console and computer systems in one program Accuracy is the stated priority, so behaviour matches the original hardware
Small project with few users Supported systems are not clearly listed in one place	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: MIT	License: GPL-2.0
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 September 21, 2026

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