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

 is the Castle level of World 3 in New Super Mario Bros. Wii. This is the first level to feature Bob-ombs.

Layout
The level starts with some ice cubes, several Dry Bones and ? Blocks, which one of them contain a Penguin Suit. To progress, Mario must enter a Warp Pipe. Mario will find a Ice Snake Block which he must use to avoid the Bottomless Pit and reach the end of the castle. Falling icicles will fall in the Ice Snake Block, and Mario will find spikes and three circus balls. The Ice Snake Block will lead Mario to a Warp Pipe. After entering the Warp Pipe, Mario will find two Pipes which spawns Bob-Ombs, Bob-Ombs frozen in ice cubes, and another Ice Snake Block. The Ice Snake Block will lead Mario to the door leading to the battle with Lemmy Koopa. Before the door, there's a Warp Pipe which Mario can access to obtain a Penguin Suit using circus balls to bounce onto the ? Block. When Mario enters in the door, he will find Lemmy Koopa again. Kamek turns Lemmy's circus balls bigger so it will be harder for Mario and co. to hurt Lemmy. Lemmy uses the same tactics he used during the Tower battle. After being hit twice, Lemmy's ball will further increase in size a little bit. After the third hit, Lemmy will fall and the key to unlock World 4 will appear.

Star Coins

 * Star Coin 1: The first Star Coin, along with several other Coins, are floating above a row of Donut Blocks. Mario and co. should bounce off of Lemmy's circus balls to reach the area.
 * Star Coin 2: The second Star Coin is at the very start of the third area, boxed in by big Ice Blocks. Mario and co. should destroy the Ice Blocks with Bob-ombs to make the Star Coin accessible.
 * Star Coin 3: The third Star Coin is surrounded by many rows of Donut Blocks and can be easily jumped to.

Enemies

 * Dry Bones
 * Bob-ombs
 * Boss: Lemmy Koopa