The Dune universe, or Duniverse, is the political, scientific, and social fictional setting of author Frank Herbert's series of six science fiction novels which began with 1965's Dune. Dune itself is considered by many to be the greatest science fiction novel of all time; it was the first bestselling hardcover science fiction novel, and is frequently cited as the best-selling science fiction novel in history. Dune won the 1966 Hugo Award and the inaugural Nebula Award for Best Novel, and was later adapted into a 1984 film as well as a 2000 television miniseries. The novel's first two sequels appeared as a miniseries in 2003. The Dune universe has also inspired a series of Dune video games, including Dune II, the first modern real-time strategy game. Herbert himself died in 1986. Beginning in 1999, his son Brian Herbert and science fiction author Kevin J. Anderson produced a number of prequel novels, as well as two which complete the original Dune series Hunters of Dune (2006) andSandworms of Dune (2007) partially based on Frank Herbert's notes discovered a decade after his death.