Gran Trak 10 for two games to be played for a quarter rather than one. A placard on the front of the game gives suggested ratings for the score in a given game, from "License Revoked" for 10 or fewer points to "Real Pro" for greater than 40; the operator's manual suggests changing or removing this card if the time per game is adjusted. In the fall of 1973, Atari began work on a driving game, an idea founder Nolan Bushnell had wanted to do since the company was initially founded in June 1972 before it was shelved in favor of "Pong". The
Early history of video games determine interest and optimal per-game pricing. Only prototype units were ever built, though the second prototype was adapted to run up to eight games at once; a few months before the initial installation at Stanford in November 1971, the pair met with Nolan Bushnell, who informed them of his own game he was making for a much lower price. That game was "Computer Space", developed by Bushnell and Ted Dabney. They had found the Data General Nova, a US$4,000 computer that they thought would be powerful enough to run four games of "Spacewar" at once; the computer turned out to