This was a very good game. The gameplay, although simple, was quite addicting. The aesthetics (both the art and music) were excellent. Although the progression felt a little slow, as after the first couple drills you'd just be going back and forth from the mine doing the same thing every time. I also feel like the controls should be clarified in the game. I didn't really read the itch.io page before I played, and until I did I had no idea you could place blocks. But all in all great job guys, you should be proud of yourselves!
(side note, somewhat unrelated to the game: I loved how you styled the itch.io page)