Here are some codes for this great soccer game. All codes must be entered with the joybad in the Options mode. If a code does not work exit the options menu, re-enter and try again. The 'L' and 'R' are the buttons on top of the joypad.
Y Y Y X A A A B ----- Invisible Walls
X A B Y Y B A X ----- Crazy Ball
B A R B Y L --------- Curve Ball
B A B B B B B B B B - Super Kicks
A A A A A Y Y Y Y Y - Super Goalie
A A B B Y Y X X ----- Dream Team
L L L L L R L ------- Super Defence
R R R R R L R ------- Super Offence