Small size.
I am going to have to agree that this game was too small in size. But, thats not the only thing, it got extremely boring quick. Now, the game was not all bad, I can tell you worked hard on the pixel art. And the animation, but the fact that there was only a couple things to do, (move away from the holes) and that being the whole game, that definitely hindered the scoring from me.
Some hints:
-Try to keep it more griping, so people want to play it longer.
-Make the game dimensions a good playable size.
Other then that, pretty good game.
:)