Time Out says
Despite faults (chiefly a dispersal of its energies), a wonderfully enjoyable fantasy about a futuristic holiday resort offering robot worlds of exotic sex, romance or violence amid the licence of ancient Rome, the gallantries of a medieval chateau, or the gunslinging frontier town. Best and most fully realised of these worlds is the Western, with Brynner (brilliant) as the robot gunman required to die, bloodily, every time a greenhorn tourist challenges him to the draw. Until, that is, the robots begin to malfunction - or rebel: only the computers that designed them know exactly how they work - and the Brynner machine sets out, now part mad killer and part Frankenstein monster, in quest of revenge. Great stuff.