Hex is a pretty nifty CCG with a cool single-player component built like an RPG campaign; You build a character, collect cards and skill points to place in a tree, you complete quests - mostly by playing card games - and you explore dungeons, fight difficult tricky battles and improve your decks and its cards with gear and special abilities. I haven't touched the multiplayer of the game at all, only playing the single-player side of it, and I still had a great time with it, way better than I had with Heartstone back when I played it. If you're interested in an original spin on computer card games, Hex is one for you.