"Race from one end to the other to collect the keys without touching the balls. Control the white ball using the arrow keys. You have to avoid the black homing balls and the blue balls that bounce randomly around the screen,because once you hit them, you will restart the level. The arrows at the top and the bottom of the screen indicate which direction you should be travelling in. Collect the key and put it into the lock so that it is unlocked before you pass the finish line."