Ender's Game, written by Orson Scott Card, is a classic science fiction novel set in a future where humanity is at war with an alien species known as the Formics. The story follows Ender Wiggin, a young boy who is recruited into an elite military training program to prepare for the next alien invasion. As Ender navigates the challenges of the training, he discovers his own exceptional abilities and must confront the moral dilemmas of war and the consequences of his actions.