Ender's Game, written by Orson Scott Card, is a classic science fiction novel that tells the story of Andrew 'Ender' Wiggin, a young boy who is recruited by the military to train for a future alien invasion. Set in a future where humanity is at war with an insectoid alien species, the book explores themes of war, leadership, and the ethics of violence. With its fast-paced action, complex characters, and thought-provoking moral dilemmas, Ender's Game has become a beloved staple of the science fiction genre.