Ted Dabney game. As "Pong" became successful, Dabney felt overshadowed by both Bushnell and Alcorn. He learned that Bushnell had patented his video circuit idea without including Dabney on the patent. Bushnell also had assigned Dabney a lower-level position in Atari and did not include him in high-level meetings. Around March 1973, Dabney left the company over this falling out, selling his portion of the company's ownership for . Dabney did continue to help Bushnell with starting his Pizza Time Theater (the predecessor of Chuck E. Cheese's) and Catalyst Technologies as an employee, being wary of Bushnell's previous treatment of him. Alongside
Spacewar! coin-operated video games. While playing "Spacewar" at Stanford sometime between 1966 and 1969, college student Hugh Tuck remarked that a coin-operated version of the game would be very successful. While the high price of a minicomputer prevented such a game from being feasible then, in 1971 Tuck and Bill Pitts created a prototype coin-operated computer game, "Galaxy Game", with a US$20,000 PDP-11. Around the same time, a second prototype coin-operated game based on "Spacewar", "Computer Space", was developed by Nolan Bushnell and Ted Dabney, which would become the first commercially sold arcade video game and the first widely available video