10th Victim

In this 1960s satire directed by Elio Petri, it's survival of the fittest in the 21st century, and population control is performed perfunctorily, through legalized murder in a game called "The Big Hunt." The "game" comes down to two assassins, both of whom are targeting each other: Marcello Mastroianni (who plays a womanizing Italian media darling) and a pistol-wielding, purple-pantsuit-clad Ursula Andress.