Rainy Day and Snail Puzzle

In the world there are hundreds of species of snails, who love the rain and different humidity. All lovers of this kind of slugs are invited today to take part in the gathering of the puzzle. Its complexity, you can choose for yourself, just five levels of difficulty. Start with the basics and then to move on, as much until you get to the most complex. On it you probably will take more than a little time. Start the game!