World 4-Airship (New Super Mario Bros. Wii)
From the Super Mario Wiki, the Mario encyclopedia
The level begins near some crates, followed by a section where Mechakoopas and Burners that rotate 180 degrees are found. Two ? Blocks are also found, with one containing a power-up. The player then enters a section with Burners on the ceiling. To the left of the area, another ? Block is found, along with a crate containing a 1-Up Mushroom near a Burner. The midway point is next, along with a large amount of crates, one of which contains a power-up. Another Mechakoopa is found, along with another Burner. A group of Warp Pipes, a Red Ring, and another Mechakoopa follow. The next section contains Cannons and pipes that release Bob-ombs. Their are stationary Burners on the ground, causing the Bob-ombs to explode if they touch the flames. A POW Block is found, along with two more ? Blocks. More cannons releasing Bob-ombs are found, along with rotating Burners. Two more Warp Pipes releasing Bob-ombs are found, along with a Warp Pipe that the player can enter. The player enters an area where Propeller Blocks are found, allowing them to reach the boss area.
The boss of the airship is Bowser Jr. in his Junior Clown Car. The player must propel up with Propeller Blocks, or as Propeller Mario, and stomp on his head three times. The Propeller Blocks can also be utilized as weapons, dealing damage equal to a single stomp when thrown at Bowser Jr. After Bowser Jr. is defeated, Magikoopa flies up with Bowser Jr. They then eject Mario and gang from the Airship, which flies away, forcing Mario to chase it to World 5.