Not bad at all
My only suggestion is to make the coin-pickup a little easier. if the ball is touching the coin, you should get the coin, however, you actually have to pretty much have the center of the ball touching the center of the coin.
Ok, i have one more suggestion. The black dot (cursor) that shows where you are going to end up when you move isn't really needed. In fact, I think it would be a little more challenging without it, but still as enjoyable.
I like the music.
To those who are demanding that the game have a storyline, etc, keep in mind that this is an avoid/collect game. It's a simple game, why not keep it simple? I don't give a shit WHY my little circle needs to collect coins. I mean, they're gold right? Does a circle need any more reason? Common.