Cheat menu:
Enter the options menu and select "Gameplay". Hold D-PAD LEFT + LEFT ANALOG-
STICK RIGHT and press START. The "Codes" selection will now be unlocked at the
options menu.

Bonus teams:
Enter "MEGASTARS" as a case-sensitive code.

Duotone graphics:
Enter "DUOTONE" as a case-sensitive code to have your player in color with all
other players in black and white.

Trash in the streets:
Enter "SPRINGER" as a case-sensitive code to see trash in the streets.
This does not work in the gym.