Details: Released on the PC and mobile devices. Originally released in 2014, but paid expansions are released periodically. Not really sure how many hours I’ve played since Blizzard doesn’t show that information in their client.
Hearthstone is a free to play online trading card game. Two players play against each other, summoning monsters and casting spells. When one player is out of life points, the other player wins. It’s very reminiscent of Magic: The Gathering, but so are pretty much all other card games in the genre.