Orson Scott Card is best known for his science fiction novel Ender's Game and its many sequels that expand the Ender Universe into the far future and the near past. Those books are organized into the Ender Saga, which chronicles the life of Ender Wiggin; the Shadow Series, which follows on the novel Ender's Shadow and is set on Earth; and the Formic Wars series, written with co-author Aaron Johnston, which tells of the terrible first contact between humans and the alien "Buggers.