I first saw Westworld in my childhood and it stuck in the mind. This is a classic 'holiday from hell' movie - with a major difference - as it's about an escapist theme park populated by robots. 'Delos' is sufficiently remote (based in the desert) and for $1,000 per day it offers wealthy tourists the opportunity to indulge in a choice of 3 fantasy environments - Westworld, Medieval World and Roman World. Our two main characters opt for Westworld and for the first 2 days enjoy the stereotypical trappings of the frontier in 1880: gunfights (which they're guaranteed to win), salon girls (yes, believe it or not but it's open season on these electronic women), a run in with the sheriff and, of course, a large bar room brawl.
Slowly but surely things start to go wrong as minor malfunctions increase. Eventually the beaks running the show behind discreet monitors lose control and all hell breaks loose. Yul Brynner is excellent here as the stoic, mean, homicidal machine and a classic chase ensues.
Morally, there's a strong undertone of the dangers of messing with technology. Out of control robots and artificial intelligence have been done before, but considering that this was made in 1973, it's a classic in its originality.
Westworld is rather short at 85 minutes and apart from a trailer there's no extras here on the DVD, however, it's vintage science fiction and is thoroughly recommended.