The Heart of the Swarm expansion for StarCraft 2: Wings of Liberty launches March 12, and Blizzard Entertainment has put the original game on sale for half price in the lead-up to the expansion's release.
Both the physical and digital versions of StarCraft 2 are on sale for $20 (regularly $39.99) in the Blizzard Store. The discount will disappear March 11 at 11:59 p.m. PT, just before Heart of the Swarm goes live.
Blizzard launched StarCraft 2 in July 2010. Heart of the Swarm is its first expansion. For more on Heart of the Swarm, check out our hands-on impressions of its Zerg single-player campaign.