WarGames

After cracking the security of an Air Force supercomputer, young hacker David Lightman (Matthew Broderick) moves his piece in a seemingly innocent video game and accidentally tells the computer to start preparing a preemptive nuclear strike. Driven by Cold War paranoia, director John Badham's techno-thriller follows Lightman and his girlfriend (Ally Sheedy) as they travel across the country to try and warn the military of the impending launch.