They've added thirteen new levels, including a never-ending staircase, a burp bank, and even a mighty fortress. The 91-Storey Treehouse Join Andy and Terry in their now 91-storey spectacular treehouse. The 78-Storey Treehouse The 78-Storey Treehouse is the sixth book in Andy Griffiths and Terry Denton's wacky treehouse adventures, where the laugh-out-loud story is told through a combination of text and fantastic cartoon-style illustrations. The 65-Storey Treehouse The 65-Storey Treehouse is the fifth book in Andy Griffiths and Terry Denton's wacky treehouse adventures, where the laugh-out-loud story is told through a combination of text and fantastic cartoon-style illustrations. The 52-Storey Treehouse Andy and Terry's incredible, ever-expanding treehouse has thirteen new storeys, including a watermelon-smashing level, a wave machine, a life-size snakes and ladders game (with real ladders and real snakes!). The 39-Storey Treehouse Andy and Terry's amazing treehouse has thirteen new levels! They've added a chocolate waterfall you can swim in, a volcano for toasting marshmallows, a bulldozer-battling level, a baby-dinosaur-petting zoo, a not-very-merry merry-go-round. The 26-Storey Treehouse Andy and Terry have expanded their treehouse! There are now thirteen brand-new storeys, including a dodgem-car rink, a skate ramp, a mud-fighting arena, an antigravity chamber. The 13-Storey Treehouse Andy and Terry live in the WORLD'S BEST treehouse! It's got a giant catapult, a secret underground laboratory, a tank of man-eating sharks and a marshmallow machine that follows you around and shoots marshmallows into your mouth whenever you're hungry.