Blizzard Entertainment announced that StarCraft II: Heart of the Swarm had sold through approximately 1.1 million copies worldwide during its first 48 hours in market.
"We want to thank the global StarCraft community for the incredible passion and support they've shown for Heart of the Swarm," said Mike Morhaime, CEO and cofounder of Blizzard Entertainment. "In addition to a brand-new single-player campaign, we added a ton of enhancements with this expansion to make StarCraft II 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."
Additionally, more than 1.1 million viewers tuned into Blizzard's 21-hour, global broadcast of launch events and community celebrations around the world including the StarCraft II: Heart of the Swarm tournament at the Major League Gaming (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.