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The House of Doors
Game Newer Super Mario Bros. DS
Level number 4-Ghost.png
Time 400
World Pumpkin Boneyard
Level type Ghost House
Enemies Balloon Boos
Game Progression
Previous level (4-4) Bone Marrow Road
(4-A) Flimsy Gulch
Next level (4-5) Arachnid Charnel
(4-Cannon.png) World 4-Cannon.png (secret)

The House of Doors (or World 4-Ghost.png) is the Ghost House and the sixth level of Pumpkin Boneyard in Newer Super Mario Bros. DS. It contains a maze of doorways, each set containing only one that leads to the goal.

The House of Doors is unlocked by completing Bone Marrow Road or Flimsy Gulch. Completing its normal exit will unlock Arachnid Charnel, and completing its secret exit will unlock World 4-Cannon.png.


Secret Exit

You first go into the second door at the start of the stage. Then, you hit the red ! button which adds blocks to the door you just went into. Enter the door that you entered. And you are way to Koopa Country.