Boneyard Backhouse is the 4th course in Plutonium Mario 64. It is a haunted mansion style level.
This mansion here, though it appears docile, is quite a tricky home. The windows shine out to the open, but on the inside, they don't shine at all. Doors may only open after collecting a certain amount of stars, while others take you to places that shouldn't exist within the mansion. There are fake stars in places you can't reach. Space is distorted and so is time itself.
Acts[]
Act 1: The Mysterious Hallway[]
Head into the mansion and go upstairs. Enter the door at the end of the walkway in the main foyer with a sign marking it as the library, and wallkick up between the bookshelves inside the library until you reach the upper level with a door. Enter the door and grab the Star on the balcony outside.
Act 2: Tumbling Bridges[]
Head back up to library and go through the door at the top of the stairs. Ascend the towers in this room with tumbling bridges between them. Bear in mind that these bridges do not seem to respawn- although they are not necessary to reach the top of the room (wallkicking up between the wall and one of the podiums can actually skip most of the platforming here). Enter the door at the top of the room and collect the Star on the balcony outside.
Act 3: Beneath The Carpet[]
Head upstairs in the mansion and enter the room with a broken door. Use the elevator to reach a platform high up with a door on it- bearing in mind that jumping off of this elevator tends to kill Mario's vertical momentum. Enter the door and collect the Star on the balcony outside.