TMNT Mutant Mayhem Sewer LairAlthough the Turtles live in the sewers, they still live in style! Their house (the Secret Sewer Lair) has it all, with more than 20 action packed features, including a dojo where the Turtles train to fight, a zip line to zip from skyline to street level in seconds, an elevator that takes them from the sewer to the street, a secret vault door, slides and false floors, a pack of slimy ooze and more!