Okay I have to start this by saying this game hooked me for 20 mins and I had to stop for my own sake, because there was something really satisfying about the mechanics once I got them. The fact you get more points depending on the type of icon you're matching (and I'm assuming it depends on how expensive they were to buy), incentivises you to buy more expensive ones, but at the same time while you're replacing an already fully matching board with new icons, you'll get less money since fewer icons will match on diagonals... It had me wanting to get my board matching asap, just to see them all racking up that much more money than before haha
I think the main feedback I have for this game is the lack of tutorial, as for the first couple of rounds I didn't really understand that the numbers on the side of the slot machine indicate how much I'll be getting if I match that kind. A more minor critique would be regarding music and sfx, I didn't get that dopamine hit you'd get from, for example, getting a high score in Balatro, where the counter would catch on fire when the numbers got big.
Overall, kinda scary how addicting this was for me, strong foundations for a game here!