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 known as the Formics. The story follows Ender Wiggin, a young boy who is recruited into a military training program to prepare for the next alien invasion. Ender's Game explores themes of war, leadership, and the moral complexities of conflict. With its fast-paced plot and complex characters, it is a beloved classic of the science fiction genre.