While a fully functional game, it does have a lot of room for improvement. The sound could me more... extreme, the facebook button, 247 banner and minimap could be better sized/placed and even better modeled. The Minimap shouldn't be too detailed, showing every obstacle. The Replay/Menu/More Games buttons should be much smaller, at the top or corner of the screen. (And maybe, just maybe align it with the mute button?)
Furthermore, the road is always gray. Why not match the white snow or brown dirt shown in the background? Why the Halloween background? Why did the moon finish first? Why don't I go through haystacks and bushes? Why is there a dead tree in happy apple valley? Why do we even have dynamite other than the sound effects? When I fall down why does the ATV explode? Why, why why?