: Some games require the official system fonts to display text correctly. Critical Safety and Legal Precautions
Leading 3DS emulators are highly optimized. They often do not require a full system BIOS to run standard games. For instance, they can simulate the system environment using high-level emulation (HLE). You generally only need to import the system font or specific AES keys if you are loading encrypted game dumps ( .3ds or .cia files). How to Protect Your Device
The only system file Citra requires (for on-screen keyboard and some UI elements) is the . It is less than 1 MB . You can obtain it legally by dumping it from your own 3DS console using homebrew, or Citra can generate a fallback font automatically.