Blizzard is introducing a single-player adventure game based on Warcraft’s card game Hearthstone. The Curse of Naxxramas brings a solo Adventure mode, new challenges, and a new deck to the iPad, Mac, and PC. The first area is named Arachnid Quarter and will be available for free on the aforementioned platforms. You can move onto the next areas through in-game purchases or through hard-earned meat-space ducats. There is no official release date yet but it is expected to be out later this year.
Source: Engadget