.FC1 File Extension
What is an FC1 file?
Save file created by FCEUX, an NES, Famicom, and Famicom Disk System emulator; contains a game's save state at a point in time.
FCEUX uses ascending file extensions, such as "fc1", "fc2", and "fc3", to save game states.
FCEUX is an advanced version of the FCE Ultra emulator. It is designed to provide functions from different FCE Ultra branches, such as FCEU rerecording, FCEUXD, and FCEUXDSP.