Fear of the other or the different is also a theme. For example, in 'I Am the Doorway', the main character's transformation makes him something other than human, and that scares people around him. It shows how humans often fear what they don't understand.
Stephen King's 'It' is typically classified as horror rather than science fiction. It focuses on supernatural elements and the terror they bring rather than scientific concepts or technological advancements.
One of his well - known science fiction stories is 'The Mist'. It presents a terrifying scenario where a thick mist envelopes a town, and within it lurk all kinds of strange and dangerous creatures. Another is 'Firestarter', which is about a young girl with pyrokinetic abilities and the government's attempts to control her. And '11/22/63' is also quite remarkable. It involves time travel as the protagonist tries to prevent the assassination of President Kennedy.
One of the best is 'The Dark Tower' series. It combines elements of science fiction, fantasy, and westerns. It follows the Gunslinger on his quest through a post - apocalyptic world filled with strange creatures and parallel universes.
Stephen King's works span various genres, but science fiction isn't the dominant one. His focus is often on elements like horror, suspense, and the paranormal.