Interesting mechanic and the presentation was nice when getting a jackpot, I managed to max out most upgrades but I did feel a little to much is left out of the player's control. Other games like Cloverpit have items that let you strategically move the odds in your favor, this feels a little like it's mostly all luck and you just get incremental stat increases which make you more likely to win. After a while it feels like strategy falls out of the window but I did enjoy it when I get the hang of how the game works. Two things I'd definitely recommend are showing what the results will be from your roll before drilling and showing an animation in the store so we can see when an upgrade is bought.