Diablo 3 becomes the fastest selling PC game of all time, Blizzard has revealed. The game sold 3.5 million copies in less than 24 hours and is sitting pretty at 6.3 million units, and this does not include the WoW promotional ones.

“Blizzard Entertainment, Inc. today announced that as of the first 24 hours of Diablo III’s release, more than 3.5 million copies had been sold, setting the new all-time record for fastest-selling PC game. That number does not include the more than 1.2 million players who received Diablo III as part of signing up for the World of Warcraft Annual Pass promotion.

“Altogether, more than 4.7 million gamers around the world were poised to storm Sanctuary on day 1 of Diablo III’s release — representing the biggest PC-game launch in history.”

Blizzard were quite ecstatic at these sales but also mentioned that the preparations to handle such a launch had been inadequate, and they simply weren’t expecting that.

“We’re definitely thrilled that so many people around the world were excited to pick up their copy of Diablo III and jump in the moment it went live,” said Blizzard co-founder Mike Morhaime. “We also regret that our preparations were not enough to ensure everyone had a seamless experience when they did so.

“I want to reaffirm our commitment to make sure the millions of Diablo III players out there have a great experience with the game moving forward, and I also want to thank them for their ongoing support.”