10th Victim (1965) is just ridiculous. Set in The Future, Marcello Mastrioanni and Ursula Andress are pitted against each other in the Big Hunt - where humans are the prey, and each prey takes a turn as hunter.
It is directed by Elio Petri, who doesn't ring any bells, but produced by Carlo Ponti. He produced tons of stuff, but I seem to associate him with Euro-cool swinging 60s movies, like this one. I can sum it up in one image: Do you know the Ericofon, that odd horn-shaped plastic phone with the rotary dial on the underside of the base? This phone will be the standard in The Future. Also, Op Art, jumpsuits, hats with see-through plastic visors, and brassieres that shoot bullets.
It soon becomes obvious that this isn't a dystopia film like Logan's Run, but a sex farce. Sure, Ursula Andress is trying to kill Mastroianni, but isn't that always the way between a man and a woman?
This movie isn't quite up there with Modesty Blaise, Danger: Diabolik or Barbarella, but would make a good second feature for any of them.