Hearthstone is a free-to-play online collectible card video game developed and published by Blizzard Entertainment. Having been released worldwide on March 11, 2014. The game is a turn-based card game between two opponents, using constructed decks of 30 cards along with a selected hero with a unique power. Players use their limited mana crystals to cast spells or summon minions to attack the opponent, with the goal of reducing the opponent's health to zero.
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