Anyone into those?
Five I like:
Horus Legacy:
Warhammer 40K themed game.
Hearthstone-like but players are fucking brutal as they have very strong skills (stronger than in HS) and basic attack power, which means most of the basic units will be destroyed when attacking the player.
Heaps of heroes to chose, very active development, balanced gameplay.
Recommended even if you are not into Warhammer 40K.
Legends of Oblivion:
Hearthstone-like based on Morrowind/Oblivion/Skyrim/Daggerfall universe. Interesting gameplay innovations such as runes (getting beaten up grants you drawing cards upon certain thresholds are met) and lanes (two sides of the board in which to play units, with different properties). Heroes have no skills like in Magic the Gathering.
Fun Arena mode, with occasional mad variants.
Well polished and active development.
Cards and Castles:
Fun and strategic; here units are placed on a 9x5 chessboard grid, but a card game really. Active development.
Hearthstone:
This is a classic.
Obviously attracts big spenders so the normal PvP is not for everyone.. but the Arena mode (draft) is always damn fun. Tavern Brawls also great.
Polish Card Game:
Fun - hooligans and Polish criminals bashing each others. Units are placed in a hex grid.
Unfortunately the devs haven't updated it in several months.
