Top definition
A fun game meant to simulate the end of the world. Was frequently played during the Cold War, but has lost popularity since nobody wins.
Dude 1: I'm bored.
Lady 1: Let's play Global Thermonuclear War!
Dude 1: Nah, let's play Tic-Tac-Toe
by SilentSand April 21, 2010
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