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Cover of The 78-Storey Treehouse
Illustrated · ages 7–10

The 78-Storey Treehouse

Written by Andy Griffiths · Illustrated by Terry Denton

Book 6 of 13 in The Treehouse SeriesView the full series

Bestseller listStage adaptation

A sixth Treehouse adventure that turns the boys' impossible home into a movie set, with all the disruption, ego and nonsense that implies. It keeps the series' heavy visual support and joke-a-minute pacing while adding a Hollywood-style hook.

  • Best for7–10
  • FormatIllustrated
  • Length384 pp
  • Read aloud~5 hr25 min
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The vibe

What it’s like.

Style

  • Conversational
  • Comedic
  • Onomatopoeic

Tone

  • Funny
  • Silly
  • Absurdist
  • Irreverent
  • Exciting

Themes

On the pagetreehouse, comic illustrations, silly rooms, movie making, film crew, inventions, book deadline, celebrity

Experience meters

Energy5/ 5
Humour5/ 5
Scariness1/ 5
Peril2/ 5
Wonder4/ 5
Cosiness2/ 5
Emotional intensity1/ 5
Conceptual intensity2/ 5

What’s it about?

The story.

Andy and Terry's treehouse has now reached seventy-eight storeys, adding yet more ridiculous floors to an already impossible home. This time, the biggest disruption is not just the new rooms but the arrival of a film crew: their treehouse life is being turned into a movie, and everyone suddenly has opinions about acting, fame, special effects and who should be in charge. The sixth Treehouse book keeps the series' core appeal: manic narrator energy, dense cartoon illustrations, impossible inventions, huge jokes and a constant feeling that the book is being assembled while you read it. The film-making setup gives the chaos a fresh shape, while still leaving plenty of room for random rooms, sudden digressions and Terry Denton's page-filling visual gags. It is especially good for readers who find conventional chapter books too text-heavy but enjoy long, funny books they can race through.

Fit check

Right for your child?

Where it lands by age

  • 1
  • 3
  • 5
  • 7
  • 9
  • 11
  • 13
  • Best fit · 7–10
  • Read aloud · 6–10
  • Independent · 7–11

Prose load

Moderate

Visual support

Very high

Reluctant-reader friendly

Very

Read-aloud quality

Strong

Works well for

  • Reading aloud
  • Reading together
  • Reluctant readers
Low sensitivityNo content warnings

Nothing in the book is likely to concern most parents. Safe to recommend without preview.

Bedtime suitability

2 / 5 · Better outside bedtime

Sensitive-child

4 / 5 · Good fit

Graphic intensity

1 / 5 · None

Best for

  • Diary of a wimpy kid fans
  • Captain underpants fans
  • Silly humour
  • Visual readers
  • Film fans

Avoid if

  • Prefers realistic stories
  • Prefers calm books
  • Needs tight plot
  • Dislikes shouting

Particularly good for children who are…

  • Reluctant reader
  • Struggling with reading
  • Neurodiversity or learning differences
  • Interested in art and creativity

In the classroom

How it works in school.

The anarchic, hugely funny Treehouse series — a legendary reluctant-reader hook and classroom-library staple.

Classroom role

  • Classroom library

A book children love that happens to support school — never a stand-in for the texts a class is taught with. Reviewed for the classroom · June 2026.

Why it lands

Why they love it.

Why kids love it

The specific delight is Hollywood arriving — a film crew turns up to make a movie of Andy and Terry's lives, and the treehouse becomes a film set, with all the egos and disasters that implies. The Treehouse where the boys' fame becomes the joke.

  • Adventure and freedom
  • Having a secret base
  • Secret world
  • Trickery and cleverness

Why parents love it

The sixth Treehouse — a film crew arrives to film the boys' lives, which gives the chaos a fresh shape. The Treehouse spoof of celebrity culture, played for seven-year-olds. Reliable late-mid volume.

  • Shared humour
  • Quick to read
  • Conversation starter

In the series

The Treehouse Series.

13 books · open the series →

About the creators

About the creators.

AG

Andy Griffiths

Writer · Australia · b. 1961

Andy Griffiths is an Australian author born in 1961, best known as the writer of the Treehouse series, beginning with The 13-Storey Treehouse (2011) and continuing in 13-storey increments, illustrated throughout by Terry Denton. The series is an exuberant, gag-saturated, illustration-heavy chapter-book franchise that has become one of the dominant reluctant-reader properties in UK and Australian publishing for ages 6–10. Griffiths' earlier Just Annoying!, Just Tricking! and Just Stupid! short-story collections established his voice: anarchic, gross-out, gleefully silly. The Treehouse books interleave prose with comic panels, single-page gags and absurd inventions on every spread. A reliable read-aloud engine.

More from Andy Griffiths
TD

Terry Denton

Writer & illustrator · Australia · b. 1950

Terry Denton is an Australian illustrator born in 1950, best known as the long-time visual collaborator of Andy Griffiths on the Just! short-story collections and the Treehouse series. Denton's style, loose, energetic, marker-and-line cartooning packed with running gags, side characters and visual asides, is the visual engine of those franchises, which would not be the same in any other illustrator's hands. He also writes and illustrates his own picture books (Wombat and Fox, Felix and Alexander) and the Gasp! series. A defining illustrator in contemporary Australian children's publishing, and one of the most heavily-illustrated chapter-book voices in print.

More from Terry Denton

If you liked this

Three ways out of this book.

If you liked this, try…

Lateral matches. Same shelf, different texture.

Come into this from…

Easier or preparing reads — perfect lead-ins.

Where to go next…

Escalation reads — a step up in scale, silliness, or stakes.

Buy or borrow

Pick up a copy.

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Last reviewed · April 2026Suggest a correctionHow we recommend

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