Following this declaration, RobPardo, an executive at Blizzard - the firm behind Diablo 3 and World of Warcraft - said that Windows 8 was "not awesome for Blizzard either".
Cards in the game are based around characters, spells and artefacts from Blizzard's Warcraft world to make them immediately familiar to players, said RobPardo, Blizzard chief executive during a presentation about Hearthstone at the Pax East gaming convention.