Are you fast enough?

[eligame]

Hi,
I’m building an infinite runner game, I want to make it simple but challenging, I wonder that whether it satisfy players!

Could any experienced players here play and give me some idea about this game? Does it need more features, need more character or more skins? ........
Game trailer:

I’m finishing iOS version for the game. So I really expect some suggestions/ comments from game community.
You can test the game on facebook version here:
https://apps.facebook.com/mountainrush/

Thank you!