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.

Animorphs main series

There are fifty-four books in the main series.^[1]

#	Title	First Published	ISBN	Ghostwriter	Narrator
1	The Invasion	June 1996	0-590-62977-8		Jake
2	The Visitor	June 1996	0-590-62978-6		Rachel
3	The Encounter	August 1996	0-590-62979-4		Tobias
4	The Message	October 1996	0-590-62980-8		Cassie
5	The Predator	December 1996	0-590-62981-6		Marco
6	The Capture	February 1997	0-590-62982-4		Jake
7	The Stranger	April 1997	0-590-99726-2		Rachel
8	The Alien	July 1997	0-590-99728-9		Aximili-Esgarrouth-Isthill
9	The Secret	August 1997	0-590-99729-7		Cassie
10	The Android	August 1997	0-590-99730-0		Marco
11	The Forgotten	September 1997	0-590-99732-7		Jake
12	The Reaction	October 1997	0-590-99734-3		Rachel
13	The Change	November 1997	0-590-49418-X		Tobias
14	The Unknown	January 1998	0-590-49423-6		Cassie
15	The Escape	January 1998	0-590-49424-4		Marco
16	The Warning	March 1998	0-590-49430-9		Jake
17	The Underground	April 1998	0-590-49436-8		Rachel
18	The Decision	May 1998	0-590-49441-4		Aximili-Esgarrouth-Isthill
19	The Departure	July 1998	0-590-49451-1		Cassie (some chapters by Jake)
20	The Discovery	August 1998	0-590-49637-9		Marco
21	The Threat	August 1998	0-590-76254-0		Jake
22	The Solution	September 1998	0-590-76255-9		Rachel
23	The Pretender	November 1998	0-590-76256-7		Tobias
24	The Suspicion	December 1998	0-590-76257-5		Cassie
25	The Extreme	January 1999	0-590-76258-3	Jeffrey Zeuhlke	Marco
26	The Attack	February 1999	0-590-76259-1		Jake
27	The Exposed	March 1999	0-590-76260-5	Laura Battyanyi-Weiss	Rachel
28	The Experiment	March 1999	0-590-76261-3	Amy Garvey	Aximili-Esgarrouth-Isthill
29	The Sickness	May 1999	0-590-76262-1	Melinda Metz	Cassie
30	The Reunion	June 1999	0-590-76263-X	Elise Donner	Marco
31	The Conspiracy	July 1999	0-439-07031-7	Laura Battyanyi-Weiss	Jake
32	The Separation	July 1999	0-439-07032-5		Rachel (split between Nice Rachel and Mean Rachel)
33	The Illusion	August 1999	0-439-07033-3	Ellen Geroux	Tobias
34	The Prophecy	September 1999	0-439-07034-1	Melinda Metz	Cassie/Aldrea
35	The Proposal	October 1999	0-439-07035-X	Jeffrey Zeuhlke	Marco
36	The Mutation	November 1999	0-439-10675-3	Erica Bobone	Jake
37	The Weakness	December 1999	0-439-10676-1	Elise Smith	Rachel
38	The Arrival	January 2000	0-439-10677-X	Kimberly Morris	Aximili-Esgarrouth-Isthill
39	The Hidden	February 2000	0-439-10678-8	Laura Battyanyi-Weiss	Cassie
40	The Other	March 2000	0-439-10679-6	Gina Gascone	Marco
41	The Familiar	April 2000	0-439-11515-9	Ellen Geroux	Jake
42	The Journey	May 2000	0-439-11516-7	Emily Costello	Rachel (some chapters by Marco)
43	The Test	June 2000	0-439-11517-5	Ellen Geroux	Tobias
44	The Unexpected	July 2000	0-439-11518-3	Lisa Harkrader	Cassie
45	The Revelation	August 2000	0-439-11519-1	Ellen Geroux	Marco
46	The Deception	September 2000	0-439-11520-5	Elise Donner	Aximili-Esgarrouth-Isthill
47	The Resistance	October 2000	0-439-11521-3	Ellen Geroux	Jake/Isaiah Fitzhenry, in the Civil War
48	The Return	November 2000	0-439-11522-1	Kimberly Morris	Rachel
49	The Diversion	December 2000	0-439-11523-X	Lisa Harkrader	Tobias
50	The Ultimate	January 2001	0-439-11524-8	Kimberly Morris	Cassie
51	The Absolute	February 2001	0-439-11525-6	Lisa Harkrader	Marco
52	The Sacrifice	March 2001	0-439-11526-4	Kimberly Morris	Aximili-Esgarrouth-Isthill
53	The Answer	April 2001	0-439-11527-2		Jake
54	The Beginning	May 2001	0-439-11528-0		All 6 Animorphs

Companion books

#	Title	First Published	ISBN	Narrator	Notes
Megamorphs 1	The Andalite's Gift	May 1997	0-590-21304-0	All 6 Animorphs
Megamorphs 2	In the Time of Dinosaurs	June 1998	0-590-95615-9	All 6 Animorphs
Megamorphs 3	Elfangor's Secret	May 1999	0-590-03639-4	All 6 Animorphs
Megamorphs 4	Back to Before	April 2000	0-439-17307-8	All 6 Animorphs
	The Andalite Chronicles	December 1997	0-590-10971-5	Elfangor-Sirinial-Shamtul	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.
	The Hork-Bajir Chronicles	November 1998	0-439-04291-7	Aldrea-Iskillion-Falan/Dak Hamee/Esplin 9466 Tobias (bookends)
	Visser	October 1999	0-439-08764-3	Edriss 562
	The Ellimist Chronicles	October 2000	0-439-21798-9	Ellimist/Toomin
Alternamorphs 1	The First Journey	March 1999	0-439-06164-4	2nd person	Ghostwritten by Tonya Alicia Martin. This is a game-style book that exists outside the main series continuity.
Alternamorphs 2	The Next Passage	March 2000	0-439-14263-6	2nd person	Ghostwritten by Emily Costello. This is a game-style book that exists outside the main series continuity.

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)