A: Cambridge, Massachusetts, United States
"Spacewar! running on the Computer History Museum's PDP-1 in 2007."
In 1962 Programmer and computer scientist Steve Russell, aka Steve "Slug" Russell, and his team at MIT, including members of the Tech Model Railroad Club, took about 200 hours to program the first computer game for a commercially available computer on a DEC PDP-1.
Inspired by the space battles in the Lensman serial of science fiction space opera by E. E. "Doc" Smith, the computer game, or videogame, was called “Spacewar ”.