World 5-Ghost House (New Super Mario Bros.)

Layout
This ghost house has Broozers that Mario can use to his advantage. First, Mario should let the Broozers break the blocks. To get the first Star Coin, Mario needs to let a Broozer break some blocks under him, so he can Wall Jump to the coin. Next, Mario needs to run and jump to a door in the corner of a room. He should quickly Wall Jump to get the second Star Coin (the third coin is in the Secret Exit). Then, the player should keep going up to find a platform that carries Mario up. It will then stop, wiggle around, fall down, and lastly, it will shoot up to the top. When Mario leaves the platform and goes through the door, he will be at the Flagpole.

Star Coins

 * Star Coin 1 - Have one of the Broozers break a set of blocks blocking the path to the first Star Coin. Wall Jump to get it.
 * Star Coin 2 - When the player spots a door near the corner of the room, they need to jump to it. Inside the room quickly Wall Jump to the coin before the six Broozers in the room destroy the blocks.
 * Star Coin 3 - This coin is in the secret exit. Reveal the invisible blocks aformentioned and reveal the Beanstalk. Avoid the Broozer and enter the door. Stay on the right side of the platform to get to the coin in an alcove.

Secret Exit
On the floor above the door that leads to the second Star Coin, the player should see three blocks together. Mario should get on top of them and jump on each one, revealing three invisible blocks. Next, Mario should get on those blocks. He should go to the middle block, then he must duck and jump, revealing another invisible block that contains a Beanstalk. He must climb it, avoid the Broozer, and go through the door. There is another platform here. The player must ride it. At the end of the ride there is a door. Through the door is the Red Flagpole. The Secret Exit opens a path to a cannon that shoots Mario to World 8.