15 books in series

The Enderverse

The Enderverse is a 16-book series with 15 released primary works first released in 1985 with contributions by Orson Scott Card and Aaron Johnston.

Earth Unaware
Earth Afire
Earth Awakens
The Swarm: Volume One Of The Second Formic War
The Hive
La Stratégie Ender
A War of Gifts: An Ender Battle School Story
Ender's Shadow
The Shadow of the Hegemon
Shadow Puppets
Shadow of the Giant
Ender in Exile
Speaker for the Dead
Xenocide
Children of the Mind
The Last Shadow