Children's book Author

K.A.Applegate

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The latest

K.A.'s most recent book

Reader favorites

Most Popular K.A. Applegate Books

Sale price
$379

The Stranger

Chapter Book · Ages 9–12 · 1997

Morphing into roaches, they infiltrate an alien city, risking becoming a meal.

Sale price
$474

The Ultimate

Chapter Book · Ages 8–12 · 2001

Animorphs face a choice: ally or fight alone against alien invaders.

Sale price
$474

The Mutation

Chapter Book · Ages 8–12 · 1999

Animorphs dive deep, uncovering a hidden world of gilled humans.

Sale price
$474

The Resistance

Chapter Book · Ages 9–12 · 2000

Reveal the secret fight against alien invaders or stay hidden?

Sale price
$474

The Reaction

Chapter Book · Ages 9–12 · 1997

Rachel's uncontrollable morphing threatens to expose her secret.

At a glance

Book Stats

52

Authored

0

Illustrated

4

Collaborators

Graphic novels

2

Chapter books

50

Publishing timeline

Books published each year, stacked by book type.

Book mix

The share of the catalog represented by each book type.

Complete bibliography

All K.A. Applegate Books

Every title in the Bookroo library, ordered from newest to oldest.

Sale price
$499

Isolation

Chapter Book · Ages 9–+ · 2002

The last humans race rival factions and an alien power for control of their ship.

Sale price
$474

The Answer

Chapter Book · Ages 9–12 · 2001

Allies emerge in the battle against the Yeerks.

Sale price
$474

The Sacrifice

Chapter Book · Ages 9–12 · 2001

Destroy the Yeerk pool to end the invasion, risking countless lives.

Sale price
$474

The Ultimate

Chapter Book · Ages 8–12 · 2001

Animorphs face a choice: ally or fight alone against alien invaders.

Sale price
$474

The Resistance

Chapter Book · Ages 9–12 · 2000

Reveal the secret fight against alien invaders or stay hidden?

Sale price
$474

The Revelation

Chapter Book · Ages 9–12 · 2000

Marco must protect his father from a dangerous project as alien threats loom.

Sale price
$474

The Test

Chapter Book · Ages 9–12 · 2000

A former enemy seeks help from the Animorphs. Can they trust her?

Sale price
$474

The Other

Chapter Book · Ages 9–12 · 2000

A new ally emerges, offering hope against an alien threat.

Sale price
$474

The Journey

Chapter Book · Ages 9–12 · 2000

Tiny aliens invade a nose; a shrinking mission ensues.

Sale price
$474

The Hidden

Chapter Book · Ages 9–12 · 2000

A race to stop the Yeerks from seizing a powerful morphing cube.

Sale price
$474

The Arrival

Chapter Book · Ages 9–12 · 2000

Andalites land on Earth, forcing Ax to choose sides in a battle against the Yeerks.

Sale price
$574

Back to Before

Chapter Book · Ages 8–12 · 2000

A leader's choice to undo the past unleashes a new reality.

Sale price
$474

The Weakness

Chapter Book · Ages 9–12 · 2000

Aliens threaten, but can the Animorphs act without their leader?

Sale price
$474

The Mutation

Chapter Book · Ages 8–12 · 1999

Animorphs dive deep, uncovering a hidden world of gilled humans.

Sale price
$474

The Prophecy

Chapter Book · Ages 9–12 · 1999

Cassie gains another's mind, unlocking secrets and a crucial truth.

Sale price
$474

The Illusion

Chapter Book · Ages 9–12 · 1999

A weapon threatens to expose the Animorphs' secret. Can they destroy it in time?

Sale price
$474

The Separation

Chapter Book · Ages 9–12 · 1999

Rachel's morph splits her into two opposite personalities. Can the Animorphs reunite her before chaos ensues?

Sale price
$474

The Conspiracy

Chapter Book · Ages 9–12 · 1999

Jake's plan to save his father from alien control falters at a critical moment.

Sale price
$474

The Reunion

Chapter Book · Ages 8–12 · 1999

A son must choose between saving or destroying his mother, a powerful alien leader.

Sale price
$499

The Sickness

Chapter Book · Ages 9–12 · 1999

An alien friend is dying, and the Animorphs must find a cure without revealing their secret.

Sale price
$474

The Experiment

Chapter Book · Ages 9–12 · 1999

A drug threatens human free will. Can the Animorphs stop it?

Sale price
$474

The Exposed

Chapter Book · Ages 9–12 · 1999

Race against time to save android allies from ocean depths.

Sale price
$474

The Attack

Chapter Book · Ages 9–12 · 1999

Chosen for a cosmic showdown, the Animorphs face the terrifying Howlers.

Sale price
$474

The Proposal

Chapter Book · Ages 9–12 · 1999

Marco faces alien threats and a family dilemma as secrets unravel.

Sale price
$474

The Extreme

Chapter Book · Ages 9–12 · 1999

Can the Animorphs stop the Yeerks' icy invasion?

Sale price
$474

The Suspicion

Chapter Book · Ages 9–12 · 1998

Tiny invaders shrink the Animorphs, threatening Earth's safety. Can they reclaim the spaceship in time?

Sale price
$474

The Discovery

Chapter Book · Ages 8–12 · 1998

A boy finds a powerful box, sparking a race against time and enemies.

Sale price
$474

The Departure

Chapter Book · Ages 9–12 · 1998

A secret threatens to expose a group of young shapeshifters.

Sale price
$474

The Decision

Chapter Book · Ages 8–12 · 1998

Trapped in Zero-space, tiny morphs face a colossal threat.

Sale price
$474

The Underground

Chapter Book · Ages 9–12 · 1998

A secret weapon against alien invaders: oatmeal. Can it save Earth?

Sale price
$474

The Warning

Chapter Book · Ages 9–12 · 1998

A website reveals potential allies or a deadly trap. What will Jake choose?

Sale price
$474

The Escape

Chapter Book · Ages 9–12 · 1998

Marco discovers his mother is the enemy's leader.

Sale price
$474

The Threat

Chapter Book · Ages 9–12 · 1998

A new recruit's reckless actions threaten to expose the Animorphs' secret.

Sale price
$474

The Pretender

Chapter Book · Ages 9–12 · 1998

Tobias discovers a shocking family secret while under the watchful eye of a dangerous enemy.

Sale price
$474

The Android

Chapter Book · Ages 9–12 · 1997

Can Marco trust an android ally to help save the world from the Yeerks?

Sale price
$474

The Alien

Chapter Book · Ages 8–12 · 1997

An alien seeks revenge while stranded on Earth, joining kids in a battle against evil invaders.

Sale price
$474

The Secret

Chapter Book · Ages 8–12 · 1997

The Animorphs must outsmart the Yeerks with a risky, smelly morph.

Sale price
$379

The Stranger

Chapter Book · Ages 9–12 · 1997

Morphing into roaches, they infiltrate an alien city, risking becoming a meal.

Sale price
$474

The Reaction

Chapter Book · Ages 9–12 · 1997

Rachel's uncontrollable morphing threatens to expose her secret.

Sale price
$474

The Forgotten

Chapter Book · Ages 9–12 · 1997

A crashed alien ship offers proof of invasion, but time travel complicates the Animorphs' mission.

Sale price
$474

The Change

Chapter Book · Ages 9–12 · 1997

Trapped as a hawk, will Tobias ever be human again?

Sale price
$499

The Andalite's Gift

Chapter Book · Ages 8–12 · 1997

Amidst alien threats, memory loss and a dust cloud trap the Animorphs.

Sale price
$499

The Message

Chapter Book · Ages 8–12 · 1996

Strange dreams lure Cassie to the sea. Is it a call for help or a trap?

Sale price
$858

The Visitor

Chapter Book · Ages 8–12 · 1996

Earth's secret defenders morph into animals to battle alien invaders.

Sale price
$759

The Invasion

Chapter Book · Ages 8–12 · 1996

Five teens gain the power to morph into animals to fight a hidden alien invasion.

Creative company

Collaborators

The authors and illustrators who share the credits across K.A. Applegate's books.