A coin-operated Spacewar arrives in a Stanford student union

What happened

Bill Pitts and Hugh Tuck had both spent hours on Spacewar in university computer rooms, and they wanted to know whether strangers would pay for the same pleasure. The arithmetic was hopeless from the start. A minicomputer able to run the duel cost thousands of dollars, far beyond what any coin box could return, so the two proceeded knowing the machine would never pay for itself. They installed a PDP-11 behind a cabinet with a vector screen, wrote their own version of the ship-against-ship fight, and wired a coin mechanism to the front.

Only one Galaxy Game ever existed. A rebuilt installation followed that could drive more than one screen from the same computer, so several matches ran at once, and students queued for it in the union for years afterward as though it had always been there. Because it went into service roughly two months ahead of Computer Space, it is often called the first coin-operated video game the public actually paid to play. The distinction worth keeping is narrow: first in operation is not the same as first manufactured for sale, and the two claims belong to different machines.

The world at the time

Computers in 1971 belonged to institutions. They sat in cooled rooms, were booked by the hour, and were run by people with a documented reason to be there. Spacewar had circulated among those rooms for nearly a decade without reaching anyone outside them. Public amusement, meanwhile, meant pinball, rifle galleries and electro-mechanical driving machines built in Chicago and Tokyo.

What it changed

Nothing scaled from one cabinet, and its builders never tried to manufacture more. What survived was the demonstration. A rival machine reached production within weeks, a company founded on the same insight had a nationwide hit within a year, and campus computer rooms went on supplying the arcade trade with engineers and ideas for the rest of the decade.