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 known as the Formics. The story follows Ender Wiggin, a young boy who is recruited into a military training program to become a commander. With its exploration of themes like war, leadership, and the ethics of violence, Ender's Game is a thought-provoking and action-packed read that has become a classic of the genre.