So far..
So far the game doesn't seem too great.
Using the up and down arrows when moving at that speed is extremely challenging (especially with those "extremely touchy" obstacles). I'd suggest attaching the ball to the mouse curser instead.
Also, when you do add artwork, go crazy. Personal artwork is always way better than a generic ball and wall.
On another note, I'd also suggest using NG Alphas section. Thats the best place to submit "in-progress" submissions.
Good luck with your game.