Shifty Boo Mansion additionally appears in the background in Super Mario Maker 2, in the Ghost House theme of the Super Mario 3D World style. Shiftier Boo Mansion, or World Flower-6, is the sixth level of World Flower in Super Mario 3D World. It takes place in a ghost house. Shifty Boo Mansion, otherwise known as World 3-3, is the third course of World 3 in Super Mario 3D World. There is a harder version called Shiftier Boo Mansion that appears in World 11. Its main features are the moving platforms. Shifty Boo Mansion is a level of World 3 in Super Mario 3D World. It is unlocked via completion of Snowball Park, and its own completion unlocks Pretty Plaza Panic. This level is unlocked by completing Faster Fort Fire Bros. , and …