Blizzard has announced that the latest expansion for World of Warcraft, Mists of Pandaria, sold about 2.7 million copies in its first week, prior to its release in China on October 2nd. This has boosted the global player base back above 10 million, and given the Asian theme, these numbers are bound to rise when the Chinese launch is tallied. Most MMORPGs can only dream of figures like these, but by WoW standards they're not that spectacular. By comparison, Cataclysm topped 3.3 million copies in one day, and single day sales for Wrath of the Lich King and The Burning Crusade were 2.8 million and 2.4 million respectively. It's the first expansion that hasn't outsold its predecessor, so it could be that WoW has finally peaked.