World 3-Castle (New Super Mario Bros. Wii)

World 3-Castle is the Castle level of the third world in New Super Mario Bros. Wii. Lemmy's Castle is riddled with giant falling icicles and frozen floors making timed jumps difficult. There are also some segments with Bottomless Pits, which are traversed by a Ice Snake Block similar to the Snake Block seen in Roy Koopa and Larry Koopa's castles in Super Mario World. However, this one is frozen. This is also the first level to feature Bob-ombs.

Lemmy Koopa is fought again here. Kamek turns Lemmy's ball bigger so it will be harder for Mario and co. to hurt Lemmy. As he takes damage, Lemmy's ball will grow bigger in size after he is done sliding his shell to attack Mario and gang.

Star Coins

 * Star Coin 1: The Star Coin is located above some Donut Lifts along the first Ice Snake Block. The player has to use the rubber balls to bounce onto the donut lifts.
 * Star Coin 2: In the first section of the third area with many Bob-ombs coming out of green pipes. The player needs to destroy the ice blocks with the Bob-ombs to get the Star Coin.
 * Star Coin 3: Along the second Snake Block, there are some Donut Lifts along its path. The Snake Block will block the Donut Lift with the Star Coin. The player has to jump ahead to the Star Coin, continue jumping so they won't fall, and jump back onto the Snake Block when it returns to the bottom.

Enemies

 * Dry Bones
 * Bob-ombs