The initial known video game competition occurred on 19 October 1972 at Stanford School for the overall game Spacewar.[15] Stanford students were invited for an "Intergalactic spacewar olympics" whose grand reward was a year's membership for Rolling Stone, with Bruce Baumgart receiving the five-man-free-for-all tournament and Tovar and Robert E. Maas receiving the Team Competition.[16] The Space Invaders Championship kept by Atari in 1980 was the initial large scale gaming competition, appealing to more than 10,000 members across the United States, establishing competitive gaming as a mainstream hobby.[17] In the summer of 1980, Walter Day founded a higher report record keeping corporation called Twin Galaxies.[18] The organization went on to help promote video games and publicize its data through publications such as the Guinness Booklet of World Details, and in 1983 it created the U.S. National Video Game Team. The team was involved with contests, such as running the GA...