Love the simple aesthetic and the game is fun.
The clubs and spades look too similar and I sat there for a few moments not being able to figure out why I didn't have a flush - one was a club and I only noticed when I looked closely.
It seems a little weird to not have a running tally of your score as you play. Maybe that's a game design decision.
The screen was transparent for me, but still playable when I put it over a dark background. I was playing in a virtual machine, perhaps that's the reason.
I think I found a bug.
1. in the middle of a game
2. click the deck
3. click rules
4. the screen goes blank and I hear the click sound when I click but I don't see anything
5. After I click enough times (I guess going through the rules I can't see) it goes back to normal