Great game!
The gameplay works really, really well. You can tell you’ve put a lot of thought into it. I also like the graphics on the cards, though not so much the skeletons (but that’s very subjective). I think it lacks light, or at least contrast. Some VFX might help, as well as background music and sound effects to boost the immersion and juice.
As for the interface, I didn’t understand the icon beneath the skeletons’ names (before the turn was resolved). Otherwise, I found the UI clean and clear.
I experienced some lag during the game, but I’ll put that down to my current internet connection.
A multiplayer option would be very welcome! Also, we could imagine options for a Twitch integration (for example, with a game mode where viewers decide which cards to add to the deck at the end of a round, or control the triggering of events affecting all players, or vote for an opponent’s next card – without the streamer knowing which skeleton the voted-for card will come from).
Finally (as this is my area of expertise), I think it would be interesting to develop a bit of lore to justify progression over time – essentially, to have a Story mode (level by level). It’s not essential; the game works very well without it, but with a view to a commercial release, I think it would be an interesting addition.
Well done on this game, and good luck with the rest of the dev!