needs improvement
To me, here's what would help:
- smaller robots. Because the game screen really isn't that big.
- more animation. For example, a jet pack flame.
- either get rid of the gold nuggets at the bottom or make them actually get picked up. Of course, if he picks them up, he really has to put them somewhere when he gets to the top.
- if it's a jet pack, it's not a "diving" direction. Also, you might want to move those arrows onto the diving area and just show them the first time you go down... and up.
- putting clouds in the background would also help get rid of the "underwater" feeling that one gets from it.
Guess that's it. Good luck!