Westworld is a 1973 American science fiction Western film written and directed by Michael Crichton. The film follows guests visiting an interactive amusement park containing lifelike androids that unexpectedly begin to malfunction. It stars Yul Brynner as an android in the amusement park, with Richard Benjamin and James Brolin as guests of the park. The film was from an original screenplay by Crichton and was his first theatrical film as director, after one TV film.