My dad brought this over to watch on Thanksgiving. Pretty damn good.
I expected it to be your normal psychedelic, depressing, sad-ending 70s sci-fi movie.
Instead I got an imaginative and intense sci-fi thriller. It had a bit of a Terminator 1 vibe to it once Yul Brynner (as the robotic gunslinger) started hunting people down.
So basically, the plot is that in the near future, they have created theme parks where you can live out a fantasy life in the past. They have Westworld, Medieval World, and Roman World. Most of the movie takes place in Westworld (hence the title). The theme parks are populated by extremely life-like robots that act like people from the time. You can get into bar-fights with them, gun-fights, even have sex with them. They are programmed to never hurt the people, though. But as sci-fi goes, something goes wrong with the robots, and they start killing people. Eventually they run out of power, but in the gunslinger's case, he was upgraded with more powerful parts. So he continues to hunt down the surviving vacationers with the cold-cunning and precision of a computerized gunslinger.
Very good, especially for a 70s sci-fi flick (which wasn't the greatest era for sci-fi). Now I need to check out the sequel, Futureworld. And I heard they're working on a TV series for Westworld coming out next year.