Blizzard's collectible trading card game Hearthstone: Heroes of Warcraft is now available for iPad. The free-to-play game was first announced at last year's PAX East event in March 2013 as a cross-platform, multiplayer strategy game intended for PC, Mac and iPad.

The World of Warcraft developer revealed details for the game's single player campaigh just last week. Hearthstone entered open beta on PC and Mac in January. [Image: Blizzard Entertainment]