Newer Super Mario Bros. Wii, a fanmade hack promising “a hundred new levels, plus new maps, music, gameplay mechanics, graphics, enemies and more.” This looks really fun, but I wonder how it fares during multiplayer chaos?
You’ll need a homebrew-capable Wii and a copy of the game (one you should acquire legally, of course) to play this mod when it releases this November.
See also: More homebrew