Choose and then select Decrypt file... (or copy it to your SD card as a decrypted file).

Decrypted 3DS ROMs can be found through specialized emulation sites, homebrew communities, or by decrypting your own physical game cartridges.

: Format used for digital eShop games, updates, and DLC. These must be installed inside the emulator interface.

A popular PC tool (available via GBATemp ) that allows you to drop encrypted files into a folder and run a script to decrypt them for emulator use.

Finding decrypted 3DS ROMs is the most critical step for playing Nintendo 3DS games on PC or mobile emulators like Citra. Regular 3DS game dumps are encrypted to run strictly on original Nintendo hardware, meaning emulators cannot read them without conversion.