World one hundred and twenty-seven is with twelve boxes and a big wall.
Step by step solution
Go UP, UP, UP, UP, UP, LEFT, LEFT, push LEFT, LEFT, LEFT and LEFT. Push UP, go LEFT, UP, push RIGHT and RIGHT.
Go LEFT, DOWN, DOWN, RIGHT, RIGHT, RIGHT, RIGHT, RIGHT, RIGHT, DOWN, DOWN and push LEFT. Push DOWN, go LEFT, push UP, UP, go DOWN, RIGHT, RIGHT, UP, UP, LEFT, push LEFT, LEFT, LEFT, LEFT, go DOWN, LEFT, push UP, UP, UP, go LEFT, UP, push RIGHT and RIGHT.
Go LEFT, DOWN, DOWN, DOWN, RIGHT, RIGHT, RIGHT, RIGHT, RIGHT, RIGHT, UP, UP, UP, LEFT, LEFT, push DOWN and DOWN. Go UP, UP, RIGHT, RIGHT, DOWN, DOWN, DOWN, LEFT, push LEFT, LEFT, LEFT, LEFT, go DOWN, LEFT, push UP, UP, go LEFT, UP and push RIGHT.
Go DOWN, DOWN, RIGHT, DOWN, DOWN, RIGHT and push UP. Go LEFT, LEFT, LEFT, DOWN and push RIGHT. Push DOWN, DOWN, go LEFT, DOWN, push RIGHT and RIGHT.
Go LEFT, UP, UP, UP, UP, RIGHT, RIGHT, DOWN, push LEFT, go UP, LEFT, push DOWN, DOWN, DOWN, go LEFT, DOWN and push RIGHT.
Go LEFT, UP and push UP. Go RIGHT, UP, UP, UP, RIGHT, push RIGHT, RIGHT, RIGHT, go UP, UP, UP, RIGHT, RIGHT, DOWN, DOWN, DOWN, push LEFT, LEFT, LEFT, LEFT, LEFT, go DOWN, LEFT, push UP, UP, UP, go LEFT, UP and push RIGHT.
Go DOWN, DOWN, DOWN, DOWN, LEFT, push UP, UP and UP.
Go DOWN, DOWN, DOWN, RIGHT, DOWN, DOWN, LEFT, push UP, UP, UP and UP.
Go DOWN, RIGHT, RIGHT, RIGHT, RIGHT, RIGHT, RIGHT, RIGHT, UP and push LEFT. Go RIGHT, UP, UP, LEFT, push DOWN, DOWN, go RIGHT, DOWN, push LEFT, LEFT, LEFT, LEFT, LEFT, go DOWN, LEFT, push UP, UP and UP.
Go DOWN, DOWN, RIGHT, RIGHT, RIGHT, RIGHT, RIGHT, UP, UP, LEFT and push DOWN. Go RIGHT, DOWN, push LEFT, LEFT, LEFT, LEFT, go DOWN, LEFT, push UP and UP.
Go DOWN, RIGHT, RIGHT, RIGHT, RIGHT, DOWN, DOWN, DOWN, RIGHT, RIGHT, DOWN, DOWN, LEFT, LEFT, push UP, UP, UP, UP, go DOWN, RIGHT, RIGHT, UP, UP, LEFT, push LEFT, LEFT, LEFT, LEFT, go DOWN, LEFT, LEFT, UP, UP, RIGHT, push DOWN, DOWN, DOWN, DOWN, go LEFT, DOWN, push RIGHT and RIGHT.
Go LEFT, UP, UP, UP, RIGHT, UP, RIGHT, RIGHT, RIGHT, DOWN, DOWN, DOWN, RIGHT, RIGHT, DOWN and push LEFT. Go DOWN, LEFT, push UP, UP, UP, UP, go DOWN, RIGHT, RIGHT, UP, UP, LEFT, push LEFT, LEFT, LEFT, LEFT, go DOWN, LEFT, LEFT, UP, UP, RIGHT, push DOWN, DOWN, DOWN, DOWN, go LEFT, DOWN and push RIGHT.
Congratulations. You have completed world one hundred and twenty-seven. Get ready for world one hundred and twenty-eight.