Use your arrow keys to move across the levels to reach the exit doors, space bar to jump, and the shift key when you want to make the world move.

Oh, and its a good idea to pay attention to what the game says to you, and try to work out the hints it is providing.

Select which of the Shift games that you wish to play, or start at the first game and make your way through all of the levels, have fun and good luck!