To play the game, use the WASD keys or the arrow keys on your keyboard to move and jump. Press the S key or the down arrow key to phase into the wall and change the direction of gravity. When you are upside down, jumping will make your character move lower on the screen. Use these controls to run, jump, and float through all 25 levels of the game. Be sure to use the WASD keys or the arrow keys to move and jump, and the S key or the down arrow key to alter gravity as you navigate through the levels.