Steampunk is a sub-genre of science fiction that features steam-powered technology and is set in a 19th century Victorian era or post-apocalyptic future where steam power has been rediscovered. It depicts retro-futuristic inventions and technology as imagined by 19th century thinkers, including fictional machines from authors like H.G. Wells and Jules Verne. Steampunk incorporates elements of fantasy, horror, alternate history or other speculative fiction genres, and refers both to works of fiction created in the 19th century or later as well as artistic styles and subcultures inspired by its aesthetic.