Looks good, but it's a shame you cannot replay levels without losing your points. I'm also not too fond of the locked upgrades. But all in all, nice game.
Charm gains grind to a halt after getting the gold mine. Not commpletely sure yet, but I have the feeling the game is not balanced enough to be enjoyable.
You should add more crafting upgrades. Right now the only one that seems useful is the income upgrade. I also suggest a little more diversity with the awards. There's a message that says some awards affect other mines, but this is only the case for the iron mine
Thanks ! I know that there is still much work I will try to improve the game through new releases. This is my first published game on kongregate.