World 2 (New Super Mario Bros. Wii)

World 2 (also known as the Desert World ) is the second world in New Super Mario Bros. Wii. This world takes place in a desert. There are eight levels in this world, two of them being castle levels that are guarded by Roy Koopa. It also has a total of ten exits. Various Toad Houses are also found around here, giving the player items such as Stars, Super Mushrooms, and Propeller Mushrooms. On the far area of the map, holes, made by Spinies appear in the sand to try to drop Mario and the gang in, making them play in the Enemy Course, a level where they have to collect all the Toad balloons without losing a life.

New enemies

 * Boomerang Bros.
 * Pokeys
 * Lakitus
 * Spinies
 * Super Piranha Plants
 * Piranha Flowers
 * Flame Chomps
 * Spike Tops
 * Fire Snakes
 * Fire Bros.
 * Spikes
 * Lava Bubbles
 * Roy Koopa (Boss)

Trivia

 * The music for this world was remixed as the music for World 3 in Puzzle & Dragons: Super Mario Bros. Edition.
 * According to unused data in the game's files, this world was supposed to feature a Ghost House.
 * This is the only even-numbered world in the game that does not have an airship level.