New Super Mario Bros. X/World 3-Ghost

3-Ghost is the Ghost House of World 3 in New Super Mario Bros. X.
==Layout==
As every other ghost house, the place is inhabited by Boos. A unique feature of the level is that the rooms and objects slowly swing back and forth constantly. Many P-Switches are found in this level.
==Star Coins==
*Star Coin 1: In the very first room, a P-Switch must be activated in order to enter the wall and grab the Star Coin.
*Star Coin 2: In the third room, the player must enter the lower-left door. In the next room, the player should activate the P-Switch, then run to the end of the room to use the Brick Blocks to reach the second Star Coin before the bricks turn back into Coins.
*Star Coin 3: In the fifth room, the player must once again hit the P-Switch to turn the row of coins into Brick Blocks. If the player jumps fast enough, the player will discover a door hidden in the ceiling. The room there autoscrolls. The player must then use the P-Switch to work their way through the room. If there is still some time left in the P-Switch, the player must immediately Wall Kick their way up to the third Star Coin before the bricks revert back to coins.
==Secret Exit==
The secret exit is in the same room the third Star Coin is located, just through the door in the far-right of the room, This exit unlocks World 4-B.
==Enemies==
*Boos
*Circling Boo Buddies
*Big Boos
*Peepas
==Levels==
*World 3-1
*World 3-2