Spacewar! (masswerk.at)
This is a virtual DEC PDP-1 (emulated in HTML5/JavaScript) running the original code of “Spacewar!”, the earliest known digital video game. If available, use gamepads or joysticks for authentic gameplay — the game was originally played using custom “control boxes”.- Spacewar! (Wikipedia)
Spacewar! is a space combat video game developed in 1962 by Steve Russell in collaboration with Martin Graetz, Wayne Wiitanen, Bob Saunders, Steve Piner, and others. It was written for the newly installed DEC PDP-1 minicomputer at the Massachusetts Institute of Technology. After its initial creation, Spacewar! was expanded further by other students and employees of universities in the area, including Dan Edwards and Peter Samson. It was also spread to many of the few dozen installations of the PDP-1 computer, making Spacewar! the first known video game to be played at multiple computer installations.