: Buying a retail cartridge provides a secure physical backup that can be played on any compatible system without modification or data risks.
If you are looking to get the most out of Mario Kart 8 Deluxe in 2026, ensuring you have the latest update with all Booster Course Pass content is paramount.
A: It is a version number, corresponding to game update version 2.2.0 (released May 22, 2025).