Without the update, you miss Luigi’s charming competitive mode. Without the base NSP, you have nothing to apply the patch to. Together, they deliver one of the richest 3D platformers ever made.
If you are downloading a "Repack" or "Base + Update" combined NSZ, ensure the pack includes at least v1.2.0, but v1.3.0 is the definitive version. Let’s address the elephant in the room.
For users who prefer digital backups or are managing their game libraries via custom firmware (CFW), the (Nintendo Submission Package) is the preferred file type. Unlike XCI (cartridge dumps), an NSP behaves exactly like a game purchased from the Nintendo eShop—installing directly to the console’s internal memory or SD card.