Files#

Roms#

All roms must have proper extensions. Only the extensions gb, gbc, gba, and nds are supported.

Saves#

Save files are generated or overwritten at runtime, they will always be in the same directory as rom, with the same file path except with an additional “.save” at the time. The rom “./mario.nds”, will have the save “./mario.nds.save”. Guac only supports uncompressed / raw save files. If you are sharing save files between emulators ensure the saves are in that that format.

Bios / Firmware#

Bios and firmware files are not required. The emulator uses Drastic open source alternatives bios files. If you do want to include bios and firmware files, add them through the config.toml or settings ui.