I've definitely not seen anything like this before.
Go as soon as your cooldown is over, sort of real-time, but feels turn based.
I quite like the idea; but I still don't think I've got the hang of it - I just keep waiting longer than I need to, or trying to act rapid fire.
The habits from Yugioh games - don't nothing for ages, then do everything all at once - are too ingrained in me.
XD
Two things that I personally would liked changed:
1) can we drag from the draw pile to draw? we drag for literally everything else, so this is a little confusing as an anomaly;
2) there were a lot of visual cues for this, but I would like to be explicitly told that I am playing as the cat - I thought the game was multiplayer until a few turns into my first non-tutorial game.