For Level 1, the ball can be moved using the arrow keys.
For Levels 2-4, use the up arrow to jump, the right arrow to move right, and the left arrow to move left. You will fall down automatically because you have gravity.
For level 5= Use the keys the same as level 1, except you will keep moving forward when you let go of the forward key, and to stop you can use the back arrow. You also skid.