Glad you fixed it in the browser, this game is great! It took me a couple of tries to understand what was going on, but I think if that's made a bit more clear it could turn out really interesting!
Only thing I notice is that the "power-ups" are more harmful than beneficial in general, as they make it harder to control, would be great to add a couple of "extra points" (or other beneficial pick ups) mixed in with the power-ups so you can try and grab something good, also would make for an interesting risk-reward.