5 stars: The game is as fully featured as the PC version and has a very simple and intuitive UI when playing. The rules may be a bit difficult to pick up at first for someone new to cards games, but after running through the tutorials they should be fine for basic play. This game is great for fans of The Witcher 3 Wild Hunt who play the in game gwent quests, as it allows you to enjoy the same thing but on mobile devices.
3 stars: There needs to be an index of what exactly everything does. Example: domanice, thrive, consume, etc. The only way to find out is by trial and error which is BS. There is so many time when I play a card thinking it's going to do one thing and does another. Liked original gwent better. Also controls are very laggy and unresponsive I often have to take several minutes to play a simple card as it won't work
5 stars: First impression is great. Its not so complex that it takes more than a few matches to understand all the rules. Diverse enough to be interesting, but short enough that losing doesnt feel bad. No ads, and although you can buy things like card packs, its not at all required. Those points alone are top tier mobile features these days. If you like strategy or card games, for sure give it a try, through at least the tutorial.
5 stars: I've tried playing it on iOS and have really disliked the interface and gaming style, since it was very different from the PC game experience. However, I am unsure how exactly they tweaked it for Android...