Mario-kart-8-deluxe-update-3.0.3.nsp.rar

If you see the extension .NSP.rar , it indicates a specific type of file structure used in the modding and emulation community:

Consider the legal and safety implications. Official updates are always the safest and most straightforward option. Mario-Kart-8-Deluxe-Update-3.0.3.NSP.rar