it's annoying how the music stops every time you switch scenes, but I see this is the first game you uploaded so I can understand it, the game is pretty good!

Seem like the only interaction with the is in the shop ? So It's a bit strange that it's in a different screen, it should probably be in the same screen as the pickaxes so you can follow up the mining while spending some money. I like the idea of having the value of the cryptocurrency varry so you have to take the right moment to sell.

Why is this 90 MB?
You are mining crypto with this right (*psst* I have no idea how this crypto-stuff actually works) ^^