Hearthstone is a digital card game developed by Blizzard, released on March 11, 2014. Players select a hero class from the World of Warcraft universe and build decks with unique cards, engaging in turn-based duels to reduce opponents' health to zero. The game features an automatic mana system, making it accessible while maintaining strategic depth. Various game modes include Battlegrounds, Tavern Brawl, and single-player matches. Blizzard regularly updates the Core Set of cards and offers pre-constructed decks and "catch-up packs" to help new and returning players.