Fantasy Space was a sci-fi genre that usually described humans using some kind of technology or magic to create a virtual world in which players could engage in various adventures and explorations. These novels often involved virtual reality, time travel, souls, supernatural powers, and other concepts. There were also some novels similar to Dream Space, such as Battle Through the Heavens, Martial Universe, The Great Dominator, and Covering the Sky. These novels also told the story of humans using technology or magic to create a virtual world in which the protagonist carried out various adventures and battles.