Yay! I got a smiley face! It's a bit too easy- the biggest challenge is putting up with the overwhelming visuals. The tile texture of the ground was strange- sometimes it didn't move at all, sometimes it went really fast. It never seemed to move at the speed of the character, this just added to the overwhelming-ness.
Lovely audio! Crowded it is indeed; makes it a bit chaotic. Power-ups could be more fun - it is a bit boring to do nothing while waiting for 10 seconds to pass; but judging by the title that's maybe the point :P Well other than that's it's a really fun game; I loved it!
The countdown timer takes the whole screen. Its too hard to see anything behind it. May be a little transparency on it will help. 10 sec feels really long when watching the count down timer on the screen.
I like the continous flow of basic shapes. You just need to polish the balance of things going on, as others said, and you'll have a great simple racer. Congrats.
Actually quite fun, but 10 seconds was a bit long for the powerup duration. And the giant numbers blinking over the games were annoooooying! Good work otherwise!
Good idea, just holy crap is there a lot going on at once.