# List of Animorphs books

This is a list of all books in the Animorphs series by K. A. Applegate. For a list of authors who ghostwrote much of this series using Applegate's name, see Animorphs § Ghostwriters.

## List of main books and companion books in publication order

There are fifty-four books in the main series.
| Number | Title | Publication date | Ghostwriter | Cover morph | Time period | Narrator | ISBN |
| 01 | The Invasion | June 1996 | | Anole lizard | c. Spring 1997 | Jake | 0-590-62977-8 |
| 02 | The Visitor | June 1996 | | Cat (Fluffer McKitty) | | Rachel | 0-590-62978-6 |
| 03 | The Encounter | August 1996 | | Red-tailed hawk | | Tobias | 0-590-62979-4 |
| 04 | The Message | October 1996 | | Bottlenose dolphin (Monica) | | Cassie | 0-590-62980-8 |
| 05 | The Predator | December 1996 | | Gorilla (Big Jim) | | Marco | 0-590-62981-6 |
| 06 | The Capture | February 1997 | | Housefly | | Jake | 0-590-62982-4 |
| 07 | The Stranger | April 1997 | | Grizzly bear | | Rachel | 0-590-99726-2 |
| Megamorphs 1 | The Andalite's Gift | May 1997 | | Siberian tiger, housefly, wolf, grizzly bear, and red-tailed hawk | c. Summer 1997 | All six Animorphs | 0-590-21304-0 |
| 08 | The Alien | July 1997 | | Human (blends DNA of Cassie, Jake, Marco, and Rachel) | During or after December 1998 | Aximili-Esgarrouth-Isthill | 0-590-99728-9 |
| 09 | The Secret | August 1997 | | Wolf | | Cassie | 0-590-99729-7 |
| 10 | The Android | August 1997 | | Wolf spider | | Marco | 0-590-99730-0 |
| 11 | The Forgotten | September 1997 | | Jaguar | | Jake | 0-590-99732-7 |
| 12 | The Reaction | October 1997 | | Crocodile | | Rachel | 0-590-99734-3 |
| 13 | The Change | November 1997 | | Human (past self) | | Tobias | 0-590-49418-X |
| | The Andalite Chronicles This book is divided into three parts. #1 - Elfangor's Journey, #2 - Alloran's Choice, and #3 - An Alien Dies. Each part was originally released as a separate book to school book clubs. | December 1997 | | | c. 1976, the 1980s, and c. Spring 1997 | Elfangor-Sirinial-Shamtul | ISBN 0-590-10971-5 |
| 14 | The Unknown | January 1998 | | Horse (Minneapolis Max) | | Cassie | 0-590-49423-6 |
| 15 | The Escape | January 1998 | | Hammerhead shark | | Marco | 0-590-49424-4 |
| 16 | The Warning | March 1998 | | Rhinoceros | | Jake | 0-590-49430-9 |
| 17 | The Underground | April 1998 | | Bat | | Rachel | 0-590-49436-8 |
| 18 | The Decision | May 1998 | | Mosquito | | Aximili-Esgarrouth-Isthill | 0-590-49441-4 |
| Megamorphs 2 | In the Time of Dinosaurs | June 1998 | | | Sario Rip time travel to 65,000,000 years ago | All six Animorphs | ISBN 0-590-95615-9 |
| 19 | The Departure | July 1998 | | Black swallowtail butterfly | | Cassie and Jake | 0-590-49451-1 |
| 20 | The Discovery | August 1998 | | King cobra snake | | Marco | 0-590-49637-9 |
| 21 | The Threat | August 1998 | | Golden retriever dog (Homer) | | Jake | 0-590-76254-0 |
| 22 | The Solution | September 1998 | | White rat | | Rachel | 0-590-76255-9 |
| | The Hork-Bajir Chronicles | November 1998 | | | 1966, 1968-69, and 1998 In the year 1998, Jara Hamee tells Tobias about the Yeerk invasion of the Hork-Bajir home world. The events described happened in the 1960s. | Tobias, Aldrea-Iskillion-Falan, Dak Hamee, and Esplin 9466 | ISBN 0-439-04291-7 |
| 23 | The Pretender | November 1998 | | Human (past self) | Presumably 1998 | Tobias | 0-590-76256-7 |
| 24 | The Suspicion | December 1998 | | Giant anteater | | Cassie | 0-590-76257-5 |
| 25 | The Extreme | January 1999 | Jeffrey Zeuhlke | Polar bear | | Marco | 0-590-76258-3 |
| 26 | The Attack | February 1999 | | Siberian tiger | | Jake | 0-590-76259-1 |
| 27 | The Exposed | March 1999 | Laura Battyanyi-Weiss | Giant squid | | Rachel | 0-590-76260-5 |
| 28 | The Experiment | March 1999 | Amy Garvey | Cattle | | Aximili-Esgarrouth-Isthill | 0-590-76261-3 |
| Alternamorphs 1 | The First Journey | March 1999 | Tonya Alicia Martin | | It is a gamebook, similar to the Choose Your Own Adventure series. The story exists outside continuity. | Second person | ISBN 0-439-06164-4 |
| 29 | The Sickness | May 1999 | Melinda Metz | Yeerk (Illim) | | Cassie | 0-590-76262-1 |
| Megamorphs 3 | Elfangor's Secret | May 1999 | | | Time Matrix time travel to October 25, 1415, December 25, 1776, October 21, 1805, 1934, June 6, 1944, and 1967. | All six Animorphs | ISBN 0-590-03639-4 |
| 30 | The Reunion | June 1999 | Elise Donner | Cockroach | | Marco | 0-590-76263-X |
| 31 | The Conspiracy | July 1999 | Laura Battyanyi-Weiss | Peregrine falcon | | Jake | 0-439-07031-7 |
| 32 | The Separation | July 1999 | | Starfish | | Rachel | 0-439-07032-5 |
| 33 | The Illusion | August 1999 | Ellen Geroux | Andalite (Aximili-Esgarrouth-Isthill) | | Tobias | 0-439-07033-3 |
| 34 | The Prophecy | September 1999 | Melinda Metz | Hork-Bajir (Jara Hamee) | During or after May 1999 | Cassie and Aldrea-Iskillion-Falan | 0-439-07034-1 |
| 35 | The Proposal | October 1999 | Jeffrey Zeuhlke | Poodle dog (Euclid) | | Marco | 0-439-07035-X |
| | Visser | October 1999 | | | 1976, the 1980s, and 1991-99 | Edriss 562 | ISBN 0-439-08764-3 |
| 36 | The Mutation | November 1999 | Erica Bobone | Orca (Swoosh) | | Jake | 0-439-10675-3 |
| 37 | The Weakness | December 1999 | Elise Smith | Cheetah | | Rachel | 0-439-10676-1 |
| 38 | The Arrival | January 2000 | Kimberly Morris | Northern harrier | | Aximili-Esgarrouth-Isthill | 0-439-10677-X |
| 39 | The Hidden | February 2000 | Laura Battyanyi-Weiss | African Cape buffalo | | Cassie | 0-439-10678-8 |
| 40 | The Other | March 2000 | Gina Gascone | Honey bee | | Marco | 0-439-10679-6 |
| Alternamorphs 2 | The Next Passage | March 2000 | Emily Costello | | It is a gamebook, similar to the Choose Your Own Adventure series. The story exists outside continuity. | Second person | ISBN 0-439-14263-6 |
| 41 | The Familiar | April 2000 | Ellen Geroux | Human (future self) (not technically a morph) | | Jake | 0-439-11515-9 |
| Megamorphs 4 | Back to Before | April 2000 | | | 1990 and alternate time line of 1997 | All six Animorphs | ISBN 0-439-17307-8 |
| 42 | The Journey | May 2000 | Emily Costello | African elephant | | Rachel and Marco | 0-439-11516-7 |
| 43 | The Test | June 2000 | Ellen Geroux | Taxxon | | Tobias | 0-439-11517-5 |
| 44 | The Unexpected | July 2000 | Lisa Harkrader | Kangaroo | January 2000 | Cassie | 0-439-11518-3 |
| 45 | The Revelation | August 2000 | Ellen Geroux | Black garden ant | | Marco | 0-439-11519-1 |
| 46 | The Deception | September 2000 | Elise Donner | Human (Joseph Felitti) | | Aximili-Esgarrouth-Isthill | 0-439-11520-5 |
| 47 | The Resistance | October 2000 | Ellen Geroux | North American beaver | | Jake and Isaiah | 0-439-11521-3 |
| | The Ellimist Chronicles | October 2000 | | | The events described happened billions of years in the past. However, they are being described in the year 2000. | Ellimist/Toomin | ISBN 0-439-21798-9 |
| 48 | The Return | November 2000 | Kimberly Morris | Super-Rachel (not technically a morph) | | Rachel | 0-439-11522-1 |
| 49 | The Diversion | December 2000 | Lisa Harkrader | German shepherd dog (Champ) | | Tobias | 0-439-11523-X |
| 50 | The Ultimate | January 2001 | Kimberly Morris | Great horned owl | | Cassie | 0-439-11524-8 |
| 51 | The Absolute | February 2001 | Lisa Harkrader | Mallard duck | | Marco | 0-439-11525-6 |
| 52 | The Sacrifice | March 2001 | Kimberly Morris | Raccoon | | Aximili-Esgarrouth-Isthill | 0-439-11526-4 |
| 53 | The Answer | April 2001 | | Anaconda | | Jake | 0-439-11527-2 |
| 54 | The Beginning | May 2001 | | The heads of all six Animorphs are shown, from the side | 2000, 2001, 2003, and maybe early 2004 | All 6 Animorphs | 0-439-11528-0 |

## Chronological list

This is a chronological list of the Animorphs books by K. A. Applegate, as applies to storyline continuity.
* The Andalite Chronicles (c. 1976, 1980s, 1997)
** This book is divided into three parts: #1: Elfangor's Journey, #2: Alloran's Choice, and #3: An Alien Dies.
* 1: The Invasion (Spring 1997)
* 2: The Visitor
* 3: The Encounter
* 4: The Message
* 5: The Predator
* 6: The Capture
* 7: The Stranger
* Megamorphs 1: The Andalite's Gift (Summer 1997)
* 8: The Alien
* 9: The Secret
* 10: The Android
* 11: The Forgotten
* 12: The Reaction
* 13: The Change
* 14: The Unknown
* 15: The Escape
* 16: The Warning
* 17: The Underground
* 18: The Decision—(c. 1998)
* Megamorphs 2: In the Time of Dinosaurs—(Sario Rip time travel to 65,000,000 years ago.)
* 19: The Departure
* The Hork-Bajir Chronicles (1966, 1968–69, 1998)
** Although the events in this story occur between The Ellimist Chronicles and The Andalite Chronicles, the entire story is being told by Jara Hamee to Tobias after book #13, The Change, and before the events of #23 The Pretender. Tobias makes reference to his restlessness and the fact that there were no missions planned (Prologue, pg ix). However, in The Pretender, (pg 12) Tobias makes reference to the fact that they had "worked plenty lately, dealing with the horrifying matter of David, the first new Animorph." This places the last possible "break" before book #20, the first book in the David trilogy
* 20: The Discovery
* 21: The Threat
* 22: The Solution
* 23: The Pretender
* 24: The Suspicion
* 25: The Extreme
* 26: The Attack
* 27: The Exposed
* 28: The Experiment
* 29: The Sickness
* Megamorphs 3: Elfangor's Secret (Time Matrix time travel to 10/25/1415, 12/25/1776, 10/21/1805, 1934, 6/6/1944, and 1967)
* 30: The Reunion—(sometime a little bit before or after 12/18/98)
* 31: The Conspiracy
* 32: The Separation—(c. 1999)
* 33: The Illusion
* 34: The Prophecy
* 35: The Proposal
* Visser (1976, 1980s, 1991–1999)
** The trial chronicled in Visser is set during and after the events of The Proposal, but the book also covers events before The Andalite Chronicles.
* 36: The Mutation
* 37: The Weakness
* 38: The Arrival
* 39: The Hidden
* 40: The Other
* Megamorphs 4: Back to Before (1999, experimental timeline to 1997)
* 41: The Familiar
* 42: The Journey
* 43: The Test
* 44: The Unexpected (c. 2000)
* 45: The Revelation
* 46: The Deception
* 47: The Resistance
* 48: The Return
* 49: The Diversion
* 50: The Ultimate
* 51: The Absolute
* 52: The Sacrifice
* 53: The Answer
* The Ellimist Chronicles (story stretching billions of years into the past)
** Technically this is set during the same time as the first chapters of The Beginning even though it covers events set far before The Andalite Chronicles.
* 54: The Beginning (2000-c. 2004)