The art and visuals are great. The audio is simple but fun.
The gameplay felt a bit repetitive for me after some time. The thing that I usually find troublesome with mining games is that most of them doesn't have a clear way for players to resurface after digging down. And unfirtunately this entry suffered the same problem. You would have to dig down in a zigzag fashion in order to be able to jump back up.
The lighting and the UI system looks pretty good however. I could see potential in continuing this project.