hiiiiiiiii! im your gifftee, big thankyou for making the game
my best level is only level 6 tho, the difficulty ramps up pretty fast ( only got good runs when i got the discount ticket)
the details in the game are pretty cool, love the rock gets a bit smaller to indicate depth, and lets not forget the slugcat cameo in the shop lol
if theres something that i would like to improve, it would be the cursor size is slightly too small and the "Next Level " button can be place is a more center location, it would probably feel more fun if mining have some particle effect, like dirt flying out (if your engine or framework supports particles)
also it would be neat to have more powerups that are related to revealing information about the dirt , maybe like a gold detector? you sometime waste mining a whole stack of tile and it doesn't give you enough money