MortTerry Pratchett- Missile Command (Wikipedia)
Missile Command is a 1980 shoot ’em up arcade video game developed and published by Atari, Inc. and later licensed to Sega for Japanese and European releases. It was designed by Dave Theurer, who also designed Atari’s vector graphics game Tempest from the same year. The game was released during the Cold War, and the player uses a trackball to defend six cities from intercontinental ballistic missiles by launching anti-ballistic missiles from three bases.