Wario Land II but it's Super Mario Bros.

This Wario Land II ROM hack recreates the 1st world of the classic Super Mario Bros. This required modifying the tilesets, and this only applies to the terrain (Wario and the enemies remain the same). The colours are practically the same as in the NES game, since the WL2 editor allows the use of any 15-bit RGB value. There are some features that were not present in the original, such as breakable pipes.