Source: Gamesutra
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Officials from developer Blizzard Entertainment have announced that the World of WarCraft expansion pack The Burning Crusade has now sold over 3.5 million copies in just one month, following its mid January launch in North America, Europe, Australia, New Zealand, Singapore, Thailand and Malaysia.
The sales of the expansion, which dwarf those of even successful stand alone PC titles from other companies, totaled more than 1.9 million copies in regions that play on North American realms (which includes 100,000 copies in Australasia). An additional 1.6 million copies were sold in Europe.