Hearthstone: Heroes of Warcraft Blizzard Entertainment shows its hand. In a surprise move the industry behemoth famous for such landmark real-time strategy series as Warcraft and Starcraft is now entering the free-to-play market with Hearthstone: Heroes of Warcraft, a digital collectible card game. https://www.youtube.com/watch?v=Q1O6wRgru1A The cards are on the table so all you have to do, heroes, is stop by the official site and sign up for the Beta.