Gwent: The Witcher Card Game is an upcoming free-to-play collectible card game developed by CD Projekt RED. It is based on the card game with the same name from the Witcher 3: Wild Hunt video game. Developers took some mechanics from other popular CCG, like Magic: The Gathering and Hearthstone, integrate their own ideas and features, thus made brand-new card game with a unique mechanic.
Right now Gwent is in open beta. Nevertheless, developers organized a big tournament GWENT Challenger with a $100.000 prize pool. Many professional Hearthstone players thinking about switching to Gwent because of its strategic deepness and small amount of random factor.