A cathartic experience if you like Chess
Actually way more difficult than one would expect of chess with a shotgun, it feels like a puzzle game

You can lose out of nowhere with multiple pieces moving at the same time to checkmate you
Or even worse, you can destroy a piece that was blocking another piece's check on you, and you will lose instantly
Thanks to that, it feels unfair at times, adding to the creeping random difficulty from the white cards you have to pile up

Replayability is lacking after a while, you see almost everything in less than 6 hours in my opinion, but you can still combine the cards in interesting ways
I didn't really like how the unlockable difficulty was handled, with each of them just adding more limitations to you, instead of, for example, increasing the enemy's speed or AI skill

Still, in the end, this was a quite unique experience and I loved the idea
It is very cathartic to shoot your opponent in Chess

UPDATE:
The devs have reworked the difficulty system completely
It's way more developed and felt like a better progression to me
There are also new cards and new guns
I still very much wish for a reroll chance though