Choose Goodies from the main menu, then hold any Shift button and press Select. If you
did this right you'll see four numbers in the lower right corner of the screen. To enter a
number, hold a combination of SHIFT buttons (see below), then press SELECT to enter the
digit. When entering numbers, R1=1, R2=2, L1=4 and L2=8. By combining buttons (eg.
R1+L2=9) it is possible to create any hex (base 16) number. I've included a few codes
below. Please let me know if you discover more.
Extra Characters 4e43
Extra Tracks 4154
Tank Combat 5443
Submarine X 5358
Motor Toon R 4631