Get Unlimited Money For 1 Season
Go to the Main menu and press Up, Up, Down, Left, Right, L1. 
A cheering sound indicates correct code entry. 

Get Unlimited Money For every Season
Go to the Main menu and press Right, Right, Left, Up, Up, Up. 
A cheering sound indicates correct code entry. 

Get Max Skill for Custom Teams
Go to the Main menu and press Up, Up, R1, L2, Up, L1. 
A cheering sound indicates correct code entry. 

All bonus teams and stadiums:
Press L1, R1, R2, L2, Up, Down, Left, Right at the main menu. 
A cheering sound indicates correct code entry. 

Semi-pro teams:
Press L2, R2, L2, R2, L2, R2 at the main menu. 
A cheering sound indicates correct code entry.

School teams:
Press L1(3), L2(3) at the main menu. 
A cheering sound indicates correct code entry. 

Timewarp teams 1:
Press Up, Down, R2, L1, Up, L2 at the main menu. 
A cheering sound indicates correct code entry. 

Timewarp teams 2:
Press Up, Down, R2, L2, Up, L1 at the main menu. 
A cheering sound indicates correct code entry. 

Developer teams:
Press R2, L1(2), Up(2), Right at the main menu. 
A cheering sound indicates correct code entry. 

Jungle stadium:
Press L1, R2(2), Up, Down, Right at the main menu. 
A cheering sound indicates correct code entry. 

School yard stadium:
Press L2, L1, R1, L1, L2(2) at the main menu. 
A cheering sound indicates correct code entry. 

School pitch stadium:
Press Up(3), Left, Right, R2 at the main menu. 
A cheering sound indicates correct code entry. 

View credits:
Press L2, L1(2), L2(3) at the main menu. 
A cheering sound indicates correct code entry. 

Farm sounds:
Press L1(2), R2, Up, Down, Right at the main menu. 
A cheering sound indicates correct code entry. 
Repeat this code to disable its effect. 

Clown sounds:
Press L1(2), L2, R2(2), R1 at the main menu. 
A cheering sound indicates correct code entry. 
Repeat this code to disable its effect. 

Fast announcers:
Press L2, R2, R1, R2, L2, R2 at the main menu. 
A cheering sound indicates correct code entry. 
Repeat this code to disable its effect. 

FMV sequences:
Press L2, L1(3), L2(2) at the main menu. 
A cheering sound indicates correct code entry. 

View credits:
Press L2, L1(2), L2(3) at the main menu. 
A cheering sound indicates correct code entry.