Very good (but a bit unpolished)! I loved Gwent in Witcher III. I love this rendition of it as well, but it feels a bit clunky every now and then - for example like how the unit descriptions cover the rest of your deck. I don't know, the game just somehow feels cumbersome, BUT fun! Definitely fun. The core gameplay is solid, the tutorials were really good, and my matchmaking waiting times have been under 30 seconds so far (I am having some troubles with connection issues while playing though).