Blizzard Entertainment Inc. has announced that Cataclysm, the third expansion for World of Warcraft, has sold more than 3.3 million copies in its first 24 hours of release, cementing its position as the fastest-selling PC game of all time. The previous record was held by the second World of Warcraft expansion, Wrath of the Lich King, which sold 2.8 million copies in its first 24 hours.

"We had to bring Azeroth to the brink of destruction in Cataclysm, but the result was our best expansion yet," said Mike Morhaime, CEO and cofounder of Blizzard Entertainment. "We want to thank all of our new, existing and returning players throughout the world for their incredible enthusiasm and support, and we look forward to hearing what they think about all the new content."