Hearthstone is a digital collectible card game that revolves around turn-based matches between two opponents, operated through Blizzard's Battle.net. Players can choose from a number of game modes, with each offering a slightly different experience. Players start the game with a substantial collection of basic cards, but can gain rarer and more powerful cards through purchasing packs of cards or as reward for completing Arena runs. In-game gold is rewarded for completing randomized daily quests, where one is given each day stacking up to three (one quest is able to be rerolled per day), and by winning matches in ranked play, where 10 gold per three wins is earned with a 100 gold limit per day.
Hearthstone is set within the Warcraft universe, with its characters, spells and locations drawing from existing lore.