Ender's Game is a science fiction novel written by Orson Scott Card. Set in Earth's future, the story follows Ender Wiggin, a young boy who is recruited by the International Fleet to train as a military commander to fight against an alien species known as the Formics. The book explores themes of war, leadership, and the moral implications of violence. With its gripping plot and complex characters, Ender's Game has become a classic in the genre of space war science fiction.