In a futuristic theme park people can go on holiday to live out their fantasies in recreated historical worlds (western, medieval and roman) that are staffed by robots. However the robots run wild and start killing guests. Yul Brynner gives a great performance as the Western gunman who hunts down two of the guests, even though he has virtually no dialogue. This is a chilling vision of people against robots that is a good mix of suspense and Sci-Fi from the novel by Michael Crichton. It is also notable for some very early computer graphics creating the world seen through the eys of the Yul Brynner robot.