Type hidden test during game play. You can now click and drag the mouse to 
control the ball. Press one of the following keys to activate the corresponding 
debug function. 

KEY               Effect
----------------------------
H   - Display and edit high-score table
M   - Display current system memory
R   - Increase game ranking
Y   - Display frame rate in title bar
B   - Immediately get new ball when one is lost
F12 - Low fuel
F11 - Unknown
F15 - Unknown