Blizzard Entertainment today announced that World of Warcraft achieved record-breaking sales in its first 24 hours since the game launched on Friday, 11th February. World of Warcraft has sold-through an estimated 280,000 copies at retail on day-one, selling more units in one day than what was previously thought to be the overall cumulative size of the European MMORPG market. This figure rose to more than 380,000 units being sold-through by the end of the first weekend. To support the European launch, Blizzard deployed over 80 servers at the World of Warcraft data centres in Paris and Frankfurt; additional servers are on standby as new players subscribe to the game.