Ender's Game is a science fiction novel written by Orson Scott Card. It is set in a future where humanity is at war with an alien species called the Formics. The story follows Ender Wiggin, a young boy who is recruited into a military training program to become a commander in the war against the Formics. The book explores themes of leadership, morality, and the consequences of war. It has won numerous awards and is considered a classic in the genre.