See also:

• Games: Video Games: Developers and Publishers: R: River Software  (1)

• Your Sinclair: Into The Mystic - Rated 8/10 by Mike Gerrard. "Into The Mystic is, of course, immaculately presented, like all of River's games. The author's an old hand now at writing adventures, and comes up with some new, intriguing problems." (April, 1991)