12569

In 1958, William A. Higinbotham invents a very primitive 'video game' for the first time. It's a prototype Tennis game, and becomes a linchpin in lawsuits and countersuits involving Atari and Maganavox in the 1970s (between Pong, home Pong, and Magnavox's Odyssey).

See
http://www.emuunlim.com/doteaters/play1sta1.htm
for far more details than I can post here.