Nice game, I liked that you didnt lose or die when the "world" fell out.
I got a little addicted and had to unlock all upgrades. In the end I almost panicked when I had one upgrade left and realised I only had one minute before an job interview started. No worries, I force quit and joined the meeting in time.
The water and ore was a little unbalanced in terms of how hard it was to gather, once you entered a water area it was easy to stay there or shoot the ball over to the other water area.
Great job!