Blizzard today announced that World of Warcraft, its award-winning subscription-based massively multiplayer online role-playing game, is now played by more than 11.5 million subscribers worldwide. This new high was reached following the November 13 release of the game’s second expansion, Wrath of the Lich King.

Within its first 24 hours of availability, Wrath of the Lich King sold more than 2.8 million copies, making it the fastest-selling PC game of all time. In addition to winning a number of editor’s choice awards from major gaming publications, the expansion has now gone on to sell more than 4 million copies in its first month, setting a new record for monthly PC-game sales. Both sales records were previously held by World of Warcraft’s first expansion, The Burning Crusade.

“We’re pleased to welcome the new and returning players who have helped World of Warcraft reach these new milestones, and we appreciate the enthusiasm and support that the game’s global community has continued to show,” said Mike Morhaime, CEO and cofounder of Blizzard Entertainment. “We look forward to providing all of them with an excellent entertainment experience for a long time to come.”