If you are using a physical edition, some retail versions may require a small 10-second update upon first launch to sync the latest data, though the base game remains playable directly from the cartridge. Technical Note: NSP vs. XCI Files
Do not play v1.0.0. v1.0.8 turns Carrion from a buggy but fun experiment into a solid, stable, console-quality port. carrion switch nsp update verified