War Games is a 1983 American Cold War science fiction film written by Lawrence Lasker and Walter F. Parkes and directed by John Badham. The film stars Matthew Broderick, Dabney Coleman, John Wood, and Ally Sheedy. The film follows David Lightman (Broderick), a young hacker who unwittingly accesses WOPR (War Operation Plan Response), a United States military supercomputer originally programmed to predict possible outcomes of nuclear war. Lightman gets WOPR to run a nuclear war simulation, believing it to be a computer game. The computer, now tied into the nuclear weapons control system and unable to tell the difference between simulation and reality, attempts to start World War III. <...> During a surprise drill of a nuclear attack, many United States Air Force Strategic Missile Wing controllers prove unwilling to turn the key required to launch a missile strike. Such refusals convince John McKittrick and other systems engineers at NORAD that missile launch control centers must be automated, without human intervention. Control is given to a NORAD supercomputer, WOPR (War Operation Plan Response), programmed to continuously run war simulations and learn over time.<...> Falken and David direct the computer to play tic-tac-toe against itself. This results in a long string of draws, forcing the computer to learn the concept of futility and no-win scenarios. WOPR obtains the missile code, but before launching, it cycles through all the nuclear war scenarios it has devised, finding they, too, all result in stalemates. Having discovered the concept of mutual assured destruction ("WINNER: NONE"), the computer tells Falken that it has concluded that nuclear war is "a strange game" in which "the only winning move is not to play." WOPR relinquishes control of NORAD and the missiles and offers to play "a nice game of chess."