Space Demons is a young adult novel written by Gillian Rubinstein, first published in 1986. It details the story of five children playing a video game which both affects and is affected by their real lives. It is the first of a trilogy, followed by Skymaze (1989) and Shinkei (1996). It was adapted as a play by Richard Tullough in 1990. The novel is suggested reading for schools in New South Wales, Australia.