World 4-Ghost House (New Super Mario Bros.)

is the Ghost House of World 4 found in New Super Mario Bros.
== Layout ==
The player starts off with a series of Semisolid Platforms with Boos to avoid. Next, striped platforms can be found which take Mario or Luigi to the next segments, some of which include Balloon Boos to avoid. The player should take the Warp Pipe by pressing the P Switch on the third segment. The player should then find a red ! Switch to make red blocks appear and allow access to a Door, as a Balloon Boo chases the player.
In the next room, the player must head to the left to press another ! Switch to make two red blocks appear, allowing access to another Warp Pipe which will take Mario or Luigi another level up whilst avoiding another Balloon Boo. The player must use the gray ? Blocks to get up another floor and take the Door. This leads to outside of the mansion, where the Goal Pole can be found, unlocking World 4-5.
=== Secret exit ===
Within the same room, Mario or Luigi must be in Mini-form must get to the top of the Warp Pipe, and Wall Jump to get to some higher blocks and more platforms, and find a door to go through, where the player will find the red-flag exit. This will unlock the Cannon level, in which the next level after will be World 7-1.
== Star Coin locations ==
*Star Coin 1: There are two way to collect the first Star Coin. The player can go through a door in the first segment and press the ? Switch there, making four ? Blocks appear, tied to long ropes. Mario or Luigi must stand on them and once the countdown ends, they'll lift Mario or Luigi up, teleporting them to a higher level and allow access to the first Star Coin. Or, by taking the first striped platform, the player can simply find an accessible route upwards by finding Hidden Blocks and destroying some Brick Blocks.
*Star Coin 2: After reaching the second room, by pressing the ! Switch, Mario or Luigi should Wall Jump on red blocks nearby to get through a Semisolid Platform, then wall jump again to get the second Star Coin.
*Star Coin 3: In the same way the player tries to find the secret exit, instead of going through the door, Wall Jump a few times to find the final Star Coin.
Category:Ghost Houses
Category:Levels with Secret Exits