Good.

The seven earned stars for this game are for good graphics, animation, style and concept. One lost star is due to few controls, another for very little content in the game, and two for the fact that the ground terrain is nearly impossible to see because of the white fade in the sky. To fix this last flaw try making the fade the opposite way, or the snow slightly grey.

its ok

i agree with the guy about the low snow. it's impossible to see the terrain which means it's unfairly hard. it's kinda like trials with a snowmobile. not bad.

Could use some improvements

The game mechanics is interesting although the movement feels a little too artificial. In addition, when you are in low snow levels it's hard to distinguish the snow from the background causing (in my case) several misses. You should also prevent acceleration in mid air, it almost feels like I'm driving a rocket with wheels than a snowmobile.
Apart from this, good effort

I like the concept.

This is a good working concept. I think that there should be motor sounds for the snowmobile when speeding it up and slowing it down. Also I think it back-flips too easily. Fix those things and this game will earn a 10.

Decent

3/5 6/10

Good concept, controls work fairly well, though its fairly difficult to pull off any stunts, as the name implies, also the orbs that take away huge chunks of health carried over from level 3-4, i had to do both levels with 0 health :S