Andy and Terry live in a treehouse. But it's not just any old treehouse, it's the most amazing treehouse in the world!
This treehouse has thirteen stories, a bowling alley, a see-through swimming pool, a secret underground laboratory, and a marshmallow machine that follows you around and automatically shoots marshmallows into your mouth whenever you are hungry.
Life would be perfect for Andy and Terry if it wasn't for the fact that they

...

"New York Times bestselling author Andy Griffiths invites readers to come hang out with him and his friend Terry Denton in their 13-Story Treehouse—filled with Andy and Terry's signature slapstick humor! Special collector's edition, now in stunning full color! Andy and Terry live in a treehouse. But it's not just any old treehouse, it's the most amazing treehouse in the world! This treehouse has thirteen stories, a bowling alley, a see-through...

Andy and Terry live in a 130-story treehouse. It has a soap bubble blaster, a time-wasting level, a thirteen-story igloo, the GRABINATOR, a toilet paper factory, and an extraterrestrial observation center for observing aliens. As it turns out, though, it's Andy, Terry and Jill who are being observed, and then abducted, by a giant flying eyeball from outer space! At first they're excited to be going on an intergalactic space adventure, but when they...

When Andy develops a severe toothache that prevents him from writing new jokes for their book, Terry uses their fantastical treehouse's money-making machine funds to purchase a Joke Writer 2000, with unexpected results.

A sequel to The 13-Story Treehouse finds Andy and Terry recounting the story of how they first met, an adventure marked by emergency shark operations, giant storms and wooden pirate heads.

"Andy and Terry are once again inviting readers to come hang out with them in their astonishing 39-story treehouse (it used to be 13 stories, then 26 stories, but they keep expanding). And this year they will have even more time to jump on the world's highest trampoline, toast marshmallows in an active volcano, swim in the chocolate waterfall, pet baby dinosaurs, and go head-to-trunk with the Trunkinator, since Terry has created the greatest invention...

Ed, Ted's friend, does not get along well with Ted's dog, Fred, and when Fred bites Ed's head, trouble is spread.

"Andy and Terry live in a 169-story treehouse. (It used to be a 156-story treehouse, but they've added 13 more stories.) It now has a kangaroo-riding range, a whatever-weather-you-want dome and a hall of funhouse mirrors--the perfect place to hide from the truancy officer who is trying to catch them and make them go to school! Unfortunately, the hall of funhouse mirrors is also the place where their evil trouble-making twins, Anti-Andy, Terrible Terry...

"Robots are running amok in Northwest Southeast Central school! It all started as a harmless science experiment meant to prove whether or not the new girl in school is in fact a... robot. But now a robot of a different kind is chewing up the hallways and causing schoolwide panic. What are the students at Northwest Southeast Central going to do?"--Back cover.

Andy and Terry travel through time trying to save their treehouse from highly talented, angry ants and Inspector Bubblewrap the building inspector while rushing to meet their publisher's deadline.