Walter Aldro Day Jr. (born May 14, 1949) is an American businessman and the founder of Twin Galaxies, an organization that tracks world records for video games and conducts a program of electronic-gaming promotions.

[3][4] After moving to the town of Fairfield, Iowa, Day sold commemorative newspapers for a living and in 1980 went to Houston, Texas, to become an oil futures trader.

[5] Day soon moved back to Fairfield and became a landlord, purchasing the Twin Galaxies arcade in Ottumwa, Iowa, in 1981.

[6] Beginning in 1983, Guinness World Records recognized video games as a new category, and Twin Galaxies became the official supplier of verified scores.

[citation needed] Day was designated as an assistant editor in charge of video game scores for the 1984 to 1986 editions.