World 7-4 (New Super Mario Bros.)

World 7-4 is the fourth level of World 7 in New Super Mario Bros..

Layout
This is a very short level, and it consists of many mushrooms and Spin Blocks, similar to levels like World 1-3, but is a completely vertical level. There is only one enemy in the whole level, a Red Koopa Troopa. The first two Star Coins are above mushrooms. The final one is within a trail of coins near the end. There is also a hidden area with more Spin Blocks and a P-Switch, giving Mario/Luigi many coins. After the hidden area is the flagpole.

Enemies

 * Koopa Troopa

Secret Exit
The secret exit requires Mario in his Mini Form. The player needs to hop on a Flying ? Block, then around a pillar to reach a mini pipe. Going into this will take the plumber to the secret exit and all the way to the castle.