A Ghost House is a haunted house level in New Super Mario Bros Wii.  In these houses, you will face enemies such as Boos, Scaredy Mice, and Bonefish.  They have a rotating Boo around the level.  This Boo will cover his eyes and blush after that level is defeated.  Most of the time, the Ghost House is one of the hardest levels.  There is a Ghost House in worlds 3, 4, 5, and 7.

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