The line comes from WarGames, the 1983 thriller in which teenager David Lightman hacks into a military supercomputer known as WOPR, or Joshua. Mistaking its war simulations for a game list, he hears the computer ask shall we play a game before choosing global thermonuclear war. The scene became one of the film's most quoted moments and helped define how computers sounded in popular culture. Decades later the phrase still circulates in gaming clips, streams and memes whenever a friendly challenge carries a hint of danger.