The effectively doubles the game’s content, but whether it is "better" than the base game is a subject of debate among fans regarding visual quality and track complexity . The Content Expansion
To play Booster Course Pass, you need a Switch + official DLC or NSO+Expansion Pack. There is no “better ROM” – but buying it supports the developers and gives you online play, leaderboards, and future updates. mario kart 8 deluxe booster course pass rom better