World 3 (also known as the Frozen World[1]) is the third world in New Super Mario Bros. Wii. This world is ice-themed and introduces the Penguin Suit. This is also the first and only world in the game that has a switch that can change the obstacles slightly in levels, similar to the Switch Palaces from Super Mario World. It is also the only world in the game with two parts. On the map is an area with ice that has two Ice Bros. on it. If Mario and co. are hit by them, they will endure a battle game where they will have to complete the Enemy Course. Lemmy Koopa is the boss of this world. It has eight levels and a total of eleven exits. It also has four Toad Houses: two red, one green, and one yellow.
This level is an icy cave level with three parts. There are floating platforms, falling Icicles, and giant falling icicles that Mario can walk on. Read more...
This level features brightly colored rotating blocks that must be used to climb to higher locations. This is also the only level to feature Amps. Read more...