World 4-4 (Super Mario 3D Land)

 is the Ghost House course of World 4 in Super Mario 3D Land.

Layout
Mario stands in a corridor, with a Boo, that conducts the player to a invisible platforms path with another Boo, and in the end, a P-Switch. The player will see a yellow moving platform in the right side, then they must jump in. It leads to a small invisible platform with a teleporting block. Entering in this block, Mario will be warped to another invisible platform path, now longer and with Peepas, two Boos and three blocks, including a ! Block that makes a four-block ground. In the end, Mario will find a octagonal room with the level's Checkpoint Flag and five blocks, one containing a Star. When Mario go toward the blocks, four Boos and a Tail Boo will attack him. In the right behind corner, the hero will discover more platforms with more ghosts and a Warp Box to warp him to another invisible way, more complicated and with a Big Boo. After, three moving platforms connects the lifts to a hall with two Brick Blocks (containing a coin and a Star) and a exit door. In the grassy area out of the house, Mario will find a Coin. Jumping towards it will make a platform (the same seen through the level) appear. More of them will able Mario to grab the Flagpole's top.

Star Medals

 * Star Medal 1: This Star Medal is floating between two Peepas from the only group in the level.
 * Star Medal 2: In the octagonal room, Mario must go to the first right corner. There are some invisible platforms and a wooden pipe. Destroying it will reveal a real Warp Pipe that warps Mario to an optical illusion room with the Star Medal.
 * Star Medal 3: In the invisible path after the second teleporting box, Mario will see the Star Medal near the landing area.

Enemies

 * Boos
 * Peepas
 * Tail Boos
 * Big Boos

Trivia

 * If the player stands on the short wall behind the Flagpole facing the fence, a ghost (resembling a tall Shy Guy mask) will reveal itself in the background.