This is a great idea, definitely I agree that the Balatro inspirations come through a lot, and probably this should do more to stand on its own visually, but the tetrominoes are a great spin and I personally got more into this gameplay loop than I did Balatro’s.
I didn’t love the unforgiving level system. I would have liked to be able to play as many games as I wanted to improve my deck. As it is, I felt like things were hugely dependent on RNG. I get this is a jam game though, and I’m sure a lot of the focus went to the main gameplay loop and content and less to the progression system. Following, I hope you end up building this into a full game!