World 3 is an ice world while World 4 is a water world in New Super Mario Bros Wii. In New Super Mario Bros U, why is World 3 the water world
World 3 - New Super Mario Bros. Wii Sheet music for Piano, Strings group, Percussion bells (Solo) | Musescore.com
![New Super Mario Bros. DS - 100% Walkthrough Part 3 - World 3 (All Star Coins & Secret Exits) - YouTube New Super Mario Bros. DS - 100% Walkthrough Part 3 - World 3 (All Star Coins & Secret Exits) - YouTube](https://i.ytimg.com/vi/9IPCMM8OQyg/maxresdefault.jpg)