WarGames is a 1983 American techno-thriller film directed by John Badham, written by Lawrence Lasker and Walter F. Parkes, and starring Matthew Broderick, Dabney Coleman, John Wood and Ally Sheedy. Broderick plays David Lightman, a young computer hacker who unwittingly accesses a United States military supercomputer programmed to simulate, predict and execute nuclear war against the Soviet Union, triggering a false alarm that threatens to start World War III.

Plot

During a surprise nuclear attack drill, many United States Air Force Strategic Missile Wing controllers prove unwilling to turn the keys required to launch a missile strike. Such refusals convince John McKittrick and other North American Aerospace Defense Command (NORAD) systems engineers that missile launch control centers must be automated, without human intervention. Control is given to a NORAD supercomputer known as WOPR (War Operation Plan Response, pronounced "whopper"), or Joshua, programmed to continuously run war simulations and learn over time.