World 3-Ghost House (New Super Mario Bros. 2)
Mario begins in front of a ? Block containing a Super Leaf which moves away when Mario tries to hit it. There is a yellow platform which, when Mario stands on it, will cause two Peepas to appear, carrying the platform to the door. When it arrives there, the Peepas will shake the platform and disappear with the platform. Going through the door, Mario will find another platform. There will be several Boos along the way as well which can obstruct Mario's path. On the other side, there are two doors. The one at the bottom is a fake door. The other door leads to the next room. Here, a Red Ring can be found, along with two platforms to help Mario get the Red Coins. At the bottom a Boo can be found hiding a Coin Roulette Block. The door there leads to the next area, where there is a fork in the path. Under the door he just came out from is a ? Block with a Super Leaf. Then, three platforms can be found. The left platform ends under the second Star Coin. The center platform ends under the leftmost door. The right platform ends under the rightmost door. The door in the middle (to the immediate right of the Star Coin) can be accessed by taking the right platform. The two doors on the ground on the right are fake doors.
Through the last door, there is a Boo and three platforms, followed by the flagpole.
Raccoon Mario is required to access this exit. Mario needs to enter the door immediately to the right of the second Star Coin in the room where Mario comes to a fork (that is, the fourth room). Mario will need to ride on the leftmost platform in the next room, where he will be taken to a door which is enclosed by Brick Blocks. He needs to break the blocks to access the door. This door leads outside, where a single moving platform can be found. This is followed by the flagpole.
This exit unlocks World 3-, skipping World 3-5.