Really cool game idea, which I have never seen before -> full points for innovation :). First I was a bit puzzled, but then it is quite fun to play. The difficulty might be a bit high or I am just horrible in playing this :). Sometimes the game just ended and I was not sure why. I did not touch anything nor were one of the feet outside the screen. Is there a timer running or are there other game over conditions?
Maybe adding some sound effects would improve the experience.
Congratulations to this very cool idea and entry!