Blizzard's World of Warcraft has recorded its largest amount of concurrent users since the role-playing game's launch in the region during 2005, with up to 1 million players in China playing simultaneously last month.
The9, operating the game in China on behalf of Blizzard Entertainment, has accredited the surge in users to World of Warcraft's expansion, The Burning Crusade, which saw its release in China last September.
In a statement, The9 explained: "After the launch of the expansion pack, many existing players returned to the game and numerous new players have also been attracted to participate in the experience."
Source: Games Industry