The Ender's Game series (sometimes called Ender series or Enderverse) is a series of science fiction books by Orson Scott Card and were among the most influential science fiction novels of the 1980s.
The Books are sorted by Publication date.
CHRONOLOGICAL ORDER
1. Ender's Game
2. A War of Gifts: An Ender Story
3. Ender's Shadow
4. Shadow of the Hegemon
5. Shadow Puppets
6. Shadow of the Giant
7. Speaker for the Dead
8. Xenocide
9. Children of the Mind
Ender Series on Wiki