- HD installer contained on disk 1 of Cinemaware release only. - UK versions released by Mirrorsoft do not contain a HD installer as a result of disk 1 being copy-protected.
C64/128 and Apple IIGS versions were planned, but never released.
Main coding by David Todd; additional coding by Gregg Tavares. Graphics & special FX by Doug Barnett; castle floorplans by Jeff Godfrey. Original music composed by Bob Lindstrom.