Rollerball is a 1975 British-American dystopian science fiction sports action film, produced and directed by Norman Jewison, and starring James Caan, John Houseman, Maud Adams, John Beck, Moses Gunn, and Ralph Richardson. The screenplay by William Harrison adapted his own short story, "Roller Ball Murder", which had first appeared in the September 1973 issue of Esquire. Although Rollerball had an American cast, a Canadian director, and was released by the American company United Artists, it was produced in London and Munich.