Dune

Few books have had a bigger cultural impact than Frank Herbert's 1965 masterpiece. Often cited as the best selling science fiction novel of all time (over 10 million copies sold), it is also usually in the discussion as possibly the best novel that science fiction has ever produced, period. Spawning countless sequels (only 5 of which were written by Herbert himself), prequels, movies, TV adaptations and even a video game, the Dune saga looms large in any discussion of the top science fiction franchises of all time.