By the time the final wave was released in late 2023, Mario Kart 8 Deluxe stood as a monolithic achievement. The Booster Course Pass didn't just add content; it transformed the game into a comprehensive museum of the franchise's history. It set a precedent for how legacy titles can be maintained through high-value, long-term support, effectively delaying the need for a "Mario Kart 9" while keeping the player base more active than ever.
