Use left/right arrows to change direction of the cup. When you press the left arrow, the cup will continue to rotate until it is completely on its left side. If you press the right arrow, the cup will rotate until it is completely on its right side. To start the game, press the left/right arrow after pressing the green flag. To pause, press the left and right arrow at once. When the water level (shown as "water" variable) is down to one, the game will stop and you won't be able to spill the water. You will still be able to have fun rotating the cup. To restart, press the green flag again and press the left or right arrow. Sorry it is not mobile friendly!