In the 1983 film WarGames, what computer game does David Lightman accidentally access?

In the 1983 film WarGames, David Lightman accidentally accesses the computer game Global Thermonuclear War.

David is a Seattle teenager who uses a home computer to search for new games. He connects to a military computer and mistakes its nuclear-war simulations for entertainment software. When he selects Global Thermonuclear War, the system begins treating the game as a real strategic exercise.

The film’s central conflict arises because the military computer is connected to the United States nuclear command system. The computer, called WOPR, continues simulating possible outcomes while officials fear that an actual Soviet attack may be underway. David eventually works with the system’s designer, Stephen Falken, to show that nuclear war cannot produce a meaningful winner.

WarGames was released by MGM in 1983 and became one of the era’s best-known films about computers, artificial intelligence and nuclear anxiety. Its premise also helped popularize the idea of a teenager accidentally entering a highly restricted computer system.