Azergarde

Thousands of retail stores around the world had their doors open at midnight on January 16 to welcome the crowds that had gathered outside, and within 24 hours of The Burning Crusade's launch that night, nearly 2.4 million players worldwide had purchased the expansion. Further details are available in a news alert we issued this morning. We again welcome all of the current, new, and returning players to The Burning Crusade. It's been great to see more and more of you take up the cause of the Horde and the Alliance as Blood Elves and Draenei, and to see the most powerful characters in Azeroth venturing deeper into Outland each day.

Just in case you were wondering what held the record until BC broke it?

That'd be WoW, with 240,000 copies sold in the first 24 hours.

Haha 10x the old record is impressive if your a major corporation.