Pong, the first commercially successful video game is released on November 29, 1972 by Atari. It was created by Allan Alcorn as a training exercise assigned to him by Nolan Bushnell, Atari co-founder.
Bushnell and Ted Dabney, the other Atari co-founder were so surprised by the quality of Alcorn's work that they decided to manufacture the game. Pong along with the Magnavox Odyssey were instrumental in the establishment of the video game industry.