StarCraft 2: Heart of the Swarm sold through 1.1 million units in just two days

StarCraft 2: Heart of the Swarm has sold through 1.1 million units in just two days of availability, Blizzard has announced.

The figure combines both digital and physical sales.

"We want to thank the global StarCraft community for the incredible passion and support they've shown for Heart of the Swarm," said CEO Mike Morhaime. "In addition to a brand-new single-player campaign, we added a ton of enhancements with this expansion to make StarCraft 2 even more fun to play, and more exciting to watch.

"We're pleased to see gamers and eSports fans around the world enjoying Heart of the Swarm."

Last weekend, more than 1.1 million viewers tuned in to see the HotS tournament at the MLG Winter Championship in Dallas, Texas.

Heart of the Swarm reached a peak concurrent viewership of more than 157,000 viewers, as reported by Twitch.