StarCraft II: Heart of the Swarm Sales Record

As of the end of its first two days of sales, StarCraft II: Heart of the Swarm, the first expansion to the real-time strategy game StarCraft II: Wings of Liberty, had sold through approximately 1.1 million copies worldwide, including both retail and digital sales, Blizzard Entertainment announced. In addition, more than 1.1 million viewers tuned into the company's 21-hour, global broadcast of launch events and community celebrations around the world, with peak concurrent viewership reaching over 125,000, as reported by Twitch.
Heart of the Swarm features a new campaign continuing the epic story of Sarah Kerrigan, Queen of Blades, as she gathers the remnants of the zerg Swarm and plots her revenge against the treacherous dictator of the Koprulu sector, Arcturus Mengsk. It also introduces several new multiplayer units and features that enhance the StarCraft II online experience.