Ender's Game is a military science fiction novel written by Orson Scott Card. Set in a future where humanity is at war with an alien race, the story follows Ender Wiggin, a young boy who is recruited into a military training program to prepare for a potential alien invasion. Ender possesses exceptional strategic thinking and becomes a key player in the battle against the aliens. The book explores themes of leadership, morality, and the consequences of war. It is a gripping and thought-provoking read that has become a classic in the science fiction genre.