I did not understand what was causing the Koalbolds to mine at any given point in time. Like others have said though, the art, animation, and even concept are really well done.

Great art! It wasn't so clear to me what sharpen and train did, though I kept buying them anyway. The quotas for paying the debt got to be quite difficult for me to hit very fast. I think I tried to let the kobolds do most of the work rather than me clicking, but it was hard for them to not hit the red (I was hoping "train" would make them more accurate). Cool concept for this type of game