The Ender Saga
by Orson Scott Card

 

Ender's Game
Ender's Game by Orson Scott Card
Speaker for the Dead
Speaker for the Dead by Orson Scott Card
Xenocide
Xenocide by Orson Scott Card
Children of the Mind
Children of the Mind by Orson Scott Card
A War of Gifts
A War of Gifts by Orson Scott Card
   
Ender in Exile
Ender in Exile by Orson Scott Card