Hot potato:

Press P during game play to display the options menu. Then, press C, 
RS, A, B(2), RS, LS, A, B, A, B(2), RS. A sound and the name of the 
code will be displayed will confirm correct code entry. Your players 
have a few seconds before the ball gets big and everyone near it 
flies to the ground. 

Invisible walls:

Press P during game play to display the options menu. Then, press A, 
B(2), A, C, A, B, A, B(2), A. A sound and the name of the code will 
be displayed will confirm correct code entry. The game will continue 
with no out-of-bounds (like indoor soccer). 

Laser ball:

Press P during game play to display the options menu. Then, press 
LS, A, C, RS, B, A, LS(2). A sound and the name of the code will be 
displayed will confirm correct code entry. The ball will move two 
to three times faster. 

Giant player:

Press P during game play to display the options menu. Then, press B, 
A, B, A, RS, B, A, B(2), A, RS. A sound and the name of the code 
will be displayed will confirm correct code entry. The currently 
controlled player will grow to twice normal size. 

Big ball:

Press P during game play to display the options menu. Then, press B, 
C, B, A, LS(2), A, B, A, LS(2). A sound and the name of the code 
will be displayed will confirm correct code entry. The ball will 
become a large blowup ball with gravitational forces as that of a 
heavier beach ball. 

Metallic men:

Press P during game play to display the options menu. Then, press B, 
A, RS, C, LS, B, A, B(2), A. A sound and the name of the code will 
be displayed will confirm correct code entry. All players will look 
as if they are made of metal. 

Beefcake mode:

Press P during game play to display the options menu. Then, press RS, 
A, LS, B, A, C, LS, A, B, A. A sound and the name of the code will be 
displayed will confirm correct code entry. All the players will 
appear in their underwear. 

Radical curve:

Press P during game play to display the options menu. Then, press C, 
A, RS, C, A, B, RS, A, B(2), LS. A sound and the name of the code 
will be displayed will confirm correct code entry. The ball may be 
aimed with the D-pad after it is passed. 

Brute punches:

Press P during game play to display the options menu. Then, press RS, 
A, B(2), A, C, LS(2), B, A, C, LS. A sound and the name of the code 
will be displayed will confirm correct code entry. Your players may 
punch opponents at double the strength.. 

Crazy bounce:

Press P during game play to display the options menu. Then, press LS, 
A, B, A, RS(2), A, C(2), A. A sound and the name of the code will be 
displayed will confirm correct code entry.