This is a careless snail, but also a stubborn snail.
It's time to go out to play, accidentally lost his shell, so it is hard to find its shell. In this process, full of danger, accidentally fall back to the cliff, so you want to help only stubborn snail, helping it recover its shell.

Operating
1, click on snails, snail change direction;
2, can not let the snails fall into the cliff;
3, color box, can be eliminated;