 In 1971, however, Pitts, who by then had graduated and was working at Lockheed as a PDP-10 programmer, learned of the 1970 DEC PDP-11, which was sold for around US$14,000.While this was still too high for a commercially viable product, as most electronic games in arcades cost around US$1,000 at the time, Tuck and Pitts felt it was low enough to build a prototype to determine interest and optimal per-game pricing.The gameplay of "Galaxy Game", like "Spacewar!