Very impressive! I like how you give that feeling of going very fast. It adds to the stress the player feels while playing.

Having the player appear as a black ball does seem to make the game a bit hard to figure out at first though. I thought the cursor was "the player" the first time I played the video.

Maybe have a tutorial where the screen pauses after a second or two in-action and arrows with descriptive text tell you what is what and basics of how to play?

I'm going to Tweet this and Google+ it too.