The fastest-selling PC game ever is a 'World of Warcraft' expansion

When you think of hot-selling PC games, you probably think of the annual Call of Duty refresh or Rockstar's latest magnum opus. However, the all-time record just went in a (somewhat) unexpected direction. Blizzard claims that World of Warcraft: Shadowlands, an expansion for its 16-year-old MMO, is now the fastest-selling PC game "of all time." Gamers bought about 3.7 million copies worldwide in the game's first full day of availability, pushing past the 3.5 million of the previous record holder -- conveniently, Blizzard's own Diablo III. The developer was also keen to point out that World of Warcraft was enjoying a revival before the launch.