Ender's Game, written by Orson Scott Card, is a science fiction novel set in a future where humanity is at war with an alien species. 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 aliens. With its exploration of themes like leadership, morality, and the consequences of war, Ender's Game is a thought-provoking and action-packed read.