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StarCraft 2: Heart of the Swarm sells 1.1 million copies in two days

The first expansion for StarCraft 2, Heart of the Swarm , sold approximately 1.1 million copies worldwide in its first two days on sale, developer Blizzard Entertainment said in a release today. Blizzard said Heart of the Swarm's initial sales figure accounts for both retail and digital sales through Battle.net, but did not provide a breakdown of physical versus download sales.

http://www.polygon.com/2013/3/21/4133306/starcraft-2-heart-of-the-swarm-sells-1-1-million-copies-in-two-days