I couldn't resist. I had to buy more packs in Hearthstone: Heroes of WarCraft. Hearthstone: Heroes of Warcraft is a digital collectible card game from Blizzard Entertainment. The game is based around 1v1 matches and will operate through Blizzard's Battle.net. Hearthstone is a free-to-play game set in the Warcraft universe, supported by the purchase of booster packs. Each pack comes with five random cards, including at least one "rare". LowkoTV Homepage.