technician created a prototype that allowed a player to move a line across the screen. After a demonstration to the company's director of research and development, some funding was allotted and the project was made official. Baer spent the next few months designing further prototypes, and in February 1967 assigned technician Bill Harrison to begin building the project. Harrison spent the next few months in between other projects building out successive modifications to the prototype. Baer, meanwhile, collaborated with engineer Bill Rusch on the design of the console, including developing the basis of many games for the system. By May, the first game was developed and by June, multiple games were completed for what was then a second prototype box. This included a game where players controlled dots chasing each other and a light gun shooter game with a plastic rifle. By August 1967, Baer and Harrison had completed a third prototype machine, but Baer felt that he was not proving successful at designing fun games for the system; to make up for this he added Bill Rusch, who had helped him come up with the initial games for the console, to the project. He soon proved his value to the team by coming up with a way to display three dots on the screen at once rather than the previous two, and proposing the development of a ping pong game. As Sanders was a military contractor and not in the business of making and selling commercial electronics, the team approached several cable television industry companies to produce the console, but were unable to find a buyer. By January 1969 the team had produced the seventh and final prototype, nicknamed the "Brown Box". After a Sanders patent attorney recommended approaching television manufacturers, they found interest first at RCA and finally at Magnavox, who entered negotiations in July 1969 and signed an agreement in January 1971. Magnavox designed the exterior of the machine, and re-engineered some of the internals with consultation from Baer and Harrison; they removed the ability to display color, reduced the number of controller types, and changed the system of selecting games from a dial to separate game cards that modified the console's circuitry when plugged into the console. Magnavox named the console the Magnavox Odyssey and announced the system's launch date for September 1972. In the late 1960s, Nolan Bushnell saw Spacewar! at Stanford University. Spacewar! is