The little imp named Juan is not the best character to save, but these are the rules of the Save juan game and they must be followed. The task is to save the red imp from an even more terrible monster, the mutant locomotive Charles. He will fire at the poor fellow with small monsters and this is fraught with dire consequences for the hero. To save him you must draw a line, which, when hardened, will turn into a shield against all threats from the monster locomotive. At each level you need to think, you can only draw one line and it must withstand the onslaught for a certain time in Save juan.
