Spacewar!

Spacewar! is one of the earliest digital computer video games. It is a two-player game where each player takes control of a spaceship and tries to destroy the other. A star in the center of the screen attracts both ships and requires maneuvering to avoid falling into it. In 1971, it was unofficially ported to a coin-operated PDP-11 machine and renamed Galaxy Game. As an arcade machine, it was installed in the Tresidder Union at Stanford University in September 1971, two months before the official release of Computer Space, the first mass-produced video game. Originally, only one machine was built, although the game later included several consoles that allowed users to play against each other.