The launch-day sales figures have been revealed for World of Warcraft’s 2nd expansion pack, Wrath of the Lich King, and they sure are impressive.

Catapulting Lich King into the realms of ‘the fasting selling PC title of all time,’ it sold a massive 2.8 million units within 24 hours, say Blizzard, the developers, beating the previous record of 2.4 million units, held by their own game and the first expansion to World of Warcraft, The Burning Crusade.

Contributing to this great success was the fact that the game enjoyed a simultaneous worldwide release, with over 15 000 stores around the globe holding midnight launch events. Blizzard CEO and co-founder, Mike Morhaime said:

“We’re grateful for the incredible support that players around the world have continued to show for World of Warcraft. Wrath of the Lich King contains some of the best content we’ve created for the game so far and we look forward to seeing even more players log in to experience it in the days ahead.”

As of the end of October, World of Warcraft, the world-dominating massively multiplayer online RPG, has 11 million active online subscribers.

WOW fans will be happy to know that the day of wrath has come, World of Warcraft: The Wrath of the Lich King is out in stores today.

If you have the original World of Warcraft and the first expansion, The Burning Crusade, get ready to jump into the new features offered by this new expansion. Fans can look forward to a new character class, the Death Knight, as well as a new continent known as Northrend, new dungeons and raids as well as a new profession.

For more information head over to the game’s website.

Activision and Blizzard have teamed up to organise a free downloadable World of Warcraft track for Guitar Hero III: Legends of Rock.

‘I am Murloc’ is a thrash metal-style song that made its debut at the BlizzCon 2005 gaming convention. It is described as a “tongue-in-cheek tribute to the beloved race of fish-people by Blizzard Entertainment’s house band, Level 70 Elite Tauren Chieftain.”

Guitar Hero fans can download ‘I am Murloc’ on Xbox Live Marketplace for the Xbox 360 and the PlayStation Store for the PS3 on the 26th of June in advance of this weekend’s Blizzard Worldwide Invitational event in Paris.