It's a nice concept, but the game becomes untolerably laggy once a lot of coins are on the screen. It's hard to say whether it's a Godot issue or a dev issue though. The coins are also very jittery, and the cards have a tendency to melt in with the floor.
I'm not really sure what to think of the game itself. Like the gambling machines this is based on, there doesn't really seem to be any tactic or strategy behind it, just spam coins. You added cards and different shapes as a bandaid, but it doesn't feel like that fixes the core issue. After a while the coin counter also stopped going down for a reason btw.
Also, please change the handle controls, they are extremely clunky.