World five hundred and seventeen looks like an alien face with four ice boxes.
Step by step solution
Go RIGHT, UP, UP, LEFT and push DOWN. Go DOWN, DOWN, RIGHT, RIGHT, RIGHT, DOWN, DOWN, LEFT, DOWN, DOWN, RIGHT and push UP.
Go UP, UP, UP, RIGHT, UP, push LEFT, go LEFT, LEFT, LEFT, UP, LEFT and push DOWN.
Go RIGHT, RIGHT, RIGHT, RIGHT, DOWN, DOWN, DOWN, DOWN, DOWN, RIGHT and push UP. Go UP, UP, UP, LEFT, UP and push RIGHT.
Go RIGHT, RIGHT, UP, UP, RIGHT and push DOWN.
Go RIGHT and push DOWN.
Congratulations. You have completed world five hundred and seventeen. Get ready for world five hundred and eighteen.