New Super Mario Bros. Wii/World 7-6

If you took the secret exit in ../World 7-Fortress/, you will unlock World 7-6. The main enemies are Para-Beetles and Heavy Para-Beetles. You need to ride on these beetles to cross the level. A Yoshi is in a brick to help you move to a higher Para-Beetle, or, if you are Propeller Mario, you can ignore Yoshi and just fly from one Para-Beetle to the next. Standing on Para-Beetles raise you upward while the heavier ones just descend. It starts on land but then gives way to a very wide gap.

Beating this level grants access to a Gold Mushroom House and a secret entrance to ../World 7-Castle/ where you will start in front of the Sledge Bro. and the double doors leading to Ludwig Von Koopa.