This format is a direct dump of a physical Nintendo Switch game cartridge. It naturally contains the base game. Emulators like Ryujinx or Yuzu/Sudachi can often read XCI files directly without needing a separate installation step.
file is a raw dump of a physical game cartridge, often preferred by those using hardware like the Mig Switch or specific flashcarts. An fire emblem engage switch xci nsp update 13 repack