I think it's a good game
I agree with the others, a jump ability would be cool. Another suggestion I have is maybe having some polygonal shapes in there with rockets on the sides and they could jet around in random directions because I thought watching the balls bounce in the same parabolic motion was a little dull. But I think what's interesting about this game is how the spider moves: it moves more like an ape than a spider and has a much more fluid movement than I've seen other newgrounders animate a spider. Personal best of 64 FTW!