EXCLUSIVE : After bringing Michael Crichton ‘s theme park vision to the screen scripting 1993’s Jurassic Park and two sequels, screenwriter David Koepp is looking to tackle another one. Deadline hears Koepp will revisit Westworld , the 1973 film written and directed by Crichton about an adult fantasy park that allows monied guests with a hankering for the Old West to go up against a coterie of robots wielding six-guns. The vacation turns nightmarish when a crack-shot robot malfunctions and starts drawing down on guests, for real. The movie starred Yul Brynner, Richard Benjamin and James Brolin. Crichton made the original film for MGM, but this one is for Warner Bros, the studio that used the concept for the TV series by Lisa Joy and Jonah Nolan. Koepp is writing the script and a major filmmaker is circling.…