So, what's different about this next book on the secret homelife of this talented duo? Well, for a start, another 13 storeys have been added to their treehouse!
There's an ice-skating rink with ice-skating penguins, a dodgem car rink, a skate ramp with a rather precarious crocodile pit perched below it.
There's a mudfighting arena, the Maze of Doom and even an ice cream parlour with 78 different flavours (I must admit, I was expecting more) served by a specialed robot created by Edward Scooperhands.
But my absolute favourite would have to be the anti-gravity chamber - although Andy himself recommends you don't go floating directly after gobbling 78 different kinds of ice cream.
Once again, Andy and Terry have created a masterful, timeless book that both engages children deep into a good read, makes them laugh, and opens up their brains and crams magic inside. Iconic, memorable and heartwarming, this is yet another winner for kids (and big kids) everywhere.
And of course, we all know how vital Andy/Terry's books are for reluctant readers. Succumb.
See our review of the 13-Storey Treehouse.
Title: The 26-Storey Treehouse
Author: Andy Griffiths
Illustrator: Terry Denton
Publisher: Pan Macmillan, $12.99 RRP
Publication Date: 1 September 2012
Format: Paperback
ISBN: 9781742611273
For ages: 6 - 12
Type: Junior Fiction