The amazing tree house is the absolute number 1! The megalomaniac success continues. The Insane tree house series conquered Australia, the Netherlands and Flanders and now also the rest of the world. Andy and Terry's amazing tree house has gotten bigger again! There are 13 new floors, this time including a melon throwing room and wave maker, a living Snakes and Ladders game (with real Ladders and real Snakes!), a root cannon with rocket ignition, a Ninja Slug Training Institute and a state-of-the-art detective agency with state-of-the-art detective equipment, and that's a good thing because Andy and Terry have to solve a big mystery - Mr. Big Nose has disappeared!!!