Welcome to the FCEUX Help menu.

The following information is about how to use FCEUX, its commands, how to use FCEUX to its fullest, and the communities for which FCEUX is designed.


Basic information about FCEUX and its features.


FCE Ultra Version History

What's Combined In FCEUX?

Additional Chapters


Guides for general uses of FCEUX and the FCEUX NES menu.


Commands under FCEUX Config menu.


Commands under FCEUX Tools menu.


Commands under FCEUX Debug menu.

FAQ / Guides

Information regarding various concepts such as TAS, ROM Hacking, RAM Mapping.

Technical Information

Technical information relating to NES hardware emulation & FCEUX file formats.

Help menu created by adelikat.

Updated & maintained by AnS.

Information collected and/or written/edited by adelikat and AnS.

Minor edits of lua-related text by FatRatKnight.

Debugger documentation edits by rainwarrior.

Created with the Personal Edition of HelpNDoc: Easy EPub and documentation editor