World 9-3 (New Super Mario Bros. Wii)
World 9-3 is the third level of World 9 in New Super Mario Bros. Wii. It is unlocked by collecting all the Star Coins from World 3. Featuring Missile Bills and King Bills, this course uses the background from World 6 and plays the ground theme. Like all levels in World 9, there is no midway point.
This level takes place on a sky mountain. Mario and co. quickly encounter a Bill Blaster which fires Missle Bills, which are capable of homing in on targets. Several Bill Blasters follow up which also fire Missile Bills, along with a number Koopa Troopas. A Warp Pipe can be seen above a pit, which leads to a maze with Brick Blocks, a P Switch and the first Star Coin. The player has to press the P Switch and navigate the maze as fast as possible to collect the Star Coin. The second Star Coin is located in a bonus area, accessible via a Warp Pipe above the main path. The final section contains moving platforms over a pit, with a new type of Missile Bill known as the King Bill being shot from off screen. The last Star Coin is on the way to the flagpole.