Ender's Game is a science fiction novel written by Orson Scott Card. It is set in a future Earth, where humanity has faced two invasions from the insectoid alien race called the "Formics" or "Buggers." The time setting is not specified explicitly in the novel, but it is estimated to take place in the 22nd century. The place settings in Ender's Game are primarily Battle School, an orbiting space station where children are trained for war, and Command School, located on the distant asteroid Eros. The story also includes scenes on Earth and, in the end, an alien world.