World 7-Tower (New Super Mario Bros. Wii)
From the Super Mario Wiki
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The first part of this level contains a large platform similar to the Tilt Lift first seen in World 1-2. It can be controlled by tilting the Wii Remote left or right as it travels upward. The player is given an Ice Flower during this part of the level. Bullet Bills are shot from Bill Blasters on the sides of the level, and run into each other in the middle of the screen, and as the player gets closer to the top of the first part of the level, Banzai Bills are shot from the right side. The second part of the level has the same platform, with Bob-ombs as obstacles instead of Bullet Bills.
Once the player reaches the end of the level, Ludwig von Koopa is fought. Ludwig shoots an indigo fireball out of his wand that follows the player around and use flutter-jumping in a tactic similar to Yoshi's. He only lands if a player is directly below him. In the second part of the stage, there is a secret exit from one of the walls on the right side. This leads to World 7-6.
In the second area, the player should enter a hidden alcove in the right wall below the second-to-highest brown sliding platform. This leads the player outside the tower to an area with many Bullet Bills and the flagpole.