The earliest known gaming competition occurred on 19 October 1972 at Stanford University for the game Spacewar.[15] Stanford students were asked with an "Intergalactic spacewar olympics" whose grand reward was a year's registration for Rolling Natural stone, with Bruce Baumgart being successful the five-man-free-for-all tournament and Tovar and Robert E. Maas receiving the Team Competition.[16] THE AREA Invaders Championship organised by Atari in 1980 was the earliest large scale video game competition, attracting more than 10,000 individuals across the USA, establishing competitive video games as a mainstream hobby.[17] In the summer of 1980, Walter Day founded a high credit score record keeping company called Twin Galaxies.[18] The business continued to help promote video games and publicize its files through publications like the Guinness Book of World Records, and in 1983 it created the U.S. National GAMING Team. The team was involved in contests, such as operating th