Reportedly, the same generic owners manual was included with the manufacturer's solid state home models for Skate King, Super Star, Rodeo, Demolition Classic, Cosmic Pinball, and Circus. The one in our Files section carries a date of 08/24/77 which suggests there may be other versions having earlier or later dates. The relationship between this game and Brunswick's 1980 'Circus' is not clear, as Briarwood was a division of Brunswick at the time, and these games have the same name but clearly different designs.