World 1-1 (New Super Mario Bros. Wii)

World 1-1 is the first level of New Super Mario Bros. Wii. It begins immediately outside Peach's Castle and introduces the player to a new power-up, the Propeller Suit. Its completion unlocks World 1-2.

Layout
Princess Peach's Castle can be seen in the background at the beginning of the level, just as in New Super Mario Bros. There are also three ? Blocks, a few Brick Blocks, and a Goomba. To the right are some moving sections of land, the latter of which has three platforms above it, and a Warp Pipe within it that leads to a room with coins, Brick Blocks, and a P Switch. The midway point can be found after exiting the sub-area.

If players have the Propeller Suit, which is accessible in several ? Blocks, they can access a Red Ring on a platform in the air to collect a 1-Up Mushroom. Further along is a rolling hill with a secret alcove; if the player jumps onto the Pipe and waits, they are brought to an area with three hidden 1-Up Mushrooms and lots of coins. The Pipe itself leads to an area with a Star Coin. After the player jumps over a few pits, the flagpole can be seen past the last rolling hill.

Star Coins

 * Star Coin 1: The first Star Coin is just after the midway point, floating above two coins and a row of two Brick Blocks and a ? Block. The player can use a Propeller Suit to fly up to it or jump from the nearby hill.
 * Star Coin 2: There will be a spinning ground wheel with a green Warp Pipe submerged inside. After the player enters the Pipe, the second Star Coin is floating high in the air between two Pipes with several coins surrounding it. The player can again reach it with a Propeller Suit, or by wall-kicking.
 * Star Coin 3: Shortly after the player exits the area with the second Star Coin, the third Star Coin is floating high in the air over a platform. The player must obtain it either with a Propeller Suit or by using the nearby Koopa Troopa to jump to it.