I thought this was a really cute way to interpret the prompt! Admittedly I was also rather confused about what to do - I knew that I had to find the ball but once I did I thought I was supposed to pick it up and bring it back, so when clicked on it and the game restarted, I thought I had accidentally restarted the game or something. Something like a winscreen or even just an explanation in the description of the exact controls would have helped clarify this alot. Additionally, I think it might help to add some fog into the game. It doesn't have to be super heavy, just so that the background doesn't extend off into infinity, completely barren. Overall though I thought this was a great prototype! The models especially look amazing.