Answer: Westworld
As in so many movies based on Michael Crichton's books or scripts ("Jurassic Park", "The Terminal Man", "The Andromeda Strain"), when you rely too much on technology, things can always go 'worng' (and, yes, that's how the movie people spelled the word in the tagline). In this particular case, animatronic robots, at the world's most fantastic amusement park, developed a nasty glitch that caused them to start slaughtering the guests. Richard Benjamin and James Brolin tried to escape, but Yul Brynner (as the Gunslinger) preferred that they draw... and die.