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 of 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 green Warp Pipe within it that leads to a room with coins, Brick Blocks, and a P Switch. The midway point can be found ahead.

If players have the Propeller Suit, which is accessible in several ? Blocks, they can access a Red Ring on a platform in the air. Further along is a rolling hill with a secret alcove; if the player jumps onto the green Pipe and waits, they are brought to an area with three hidden 1-Up Mushrooms and dozens of coins. The pipe itself leads to an area with a Star Coin. After jumping over a few pits, the flagpole can be seen past the final 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 players 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 entering the Pipe, the second Star Coin is floating high in the air between two Pipes with several Coins surrounding it. The players can again reach it with a Propeller Suit, or by wall kicking.
 * Star Coin 3: Shortly after exiting the area with the second Star Coin, the third Star Coin is floating high in the air over a platform. The players must obtain it either with a Propeller Suit or by using the nearby Koopa Troopa to jump to it.