Hearthstone: Heroes of Warcraft, a digital strategy card game in development by Blizzard, has entered closed beta. Invitations for the beta are going out this week.
Originally announced at PAX East 2013, Hearthstone is a digital card game in the vein of Magic: The Gathering. Players battle each other using either pre-built or custom decks. The game will be available for Mac and PC at first, with an iPad version coming later this year. you can sign up for the beta on Hearthstone's website.