Video game development
The history of game making begins with the development of the first video games, although which video game is the first depends on the definition of "video game". The first games created had little entertainment value, and their development focus was separate from user experience—in fact, these games required mainframe computers to play them. "OXO", written by Alexander S. Douglas in 1952, was the first computer game to use a digital display. In 1958, a game called "Tennis for Two", which displayed its output on an oscilloscope, was made by Willy Higinbotham, a physicist working at the Brookhaven National Laboratory. In 1961, a mainframe computer game called "Spacewar!" was developed by a group of Massachusetts Institute of Technology students led by Steve Russell.
Edson Hendricks
As an undergraduate, Hendricks visited the MIT student employment center where he was offered the position of computer operator, running an IBM System/360 model 65 computer. 
Hendricks was rapidly promoted to systems programmer. When IBM added a 2250 video display to the 360/65, Hendricks looked for a project to learn how to program it. Upstairs in the same building, Steve Russell had created “Spacewar!,” the first computer game, using a DEC PDP-1 computer. Hendricks wrote his own game, also named “Spacewar!,” which was the first computer video game to run on an IBM Computer. For several years, MIT used Hendricks version of “Spacewar!” at their Annual Open House, making it possibly the first video game ever to be seen (and played) by the general public.