World 2-4 (New Super Mario Bros. Wii)

World 2-4 is the fourth level of the second world in New Super Mario Bros. Wii. It is unlocked via completion of, and its own completion unlocks World 2-5 and World 2-6. A secret exit unlocks a shortcut to .

Layout
This level has many floating coins and Koopas, as well as POW Blocks. Every few seconds, a strong wind blows in the level, forcing the player to the right.

Star Coins

 * Star Coin 1: After a green pipe before the checkpoint, there is a platform which is difficult to reach without a Propeller Mushroom. At the top of the left wall, there are three hidden blocks, the middle one containing a beanstalk that leads to an area with a cloud floor, two Propeller Blocks, and the Star Coin.
 * Star Coin 2: There is a green pipe at the bottom ledge, visible just after the checkpoint. It leads to an underground section with coins in the shape of a Fire Flower. The Star Coin floats between the "leaves", and requires the Propeller form to obtain.
 * Star Coin 3: Near a sign that points to the upper ledge, players should use the Propeller form to time a jump over the pit, and fly upward just as the wind begins to blow. The wind will blow the player to the Star Coin.

Secret Exit
This exit also requires a Propeller Suit. After the third Star Coin, there are two platforms with one Spike Top each. When the wind begins to blow, the player must perform a running double jump and fly up to the enclosed area with a red pipe. This secret exit leads to a warp pipe in the World Map, which leads directly to .

Enemies

 * Koopa Troopas
 * Piranha Plants
 * Spike Tops