 Later, Day became "known as the king of video game stats" and his scoreboard was published in Joystik and Video Games magazine every month.Beginning in the summer of 1983, Walter Day became the official supplier of verified video game scores to Guinness World Records.It was the first time that Guinness World Records had ever recognized video games as a valid category, citing the problems faced with the different versions of the games, myriad bugs, and the inability to verify video game claims through the mail.