If you want new levels and a fresh experience on your original Wii, the homebrew community has created what is essentially a "sequel" within the Wii's hardware limits.
disk on a Wii, these full-game mods are the next best thing. They use custom assets to mimic the Wii U's style and difficulty. Newer Super Mario Bros. Wii : This is the gold standard. Created by the Newer Team New Super Mario Bros U Wii Roms For Wii-
: A massive hack that adds new worlds and UI elements, even supporting the Wii Classic Controller—a feature many felt the original was missing. NSMBU + Wii (Hack) If you want new levels and a fresh