Code notes:
The following codes may only be enabled after winning the simulations.

NFC/AFC teams:
Press A, B, A, B, A, B at the legal screen.

Acclaim/Iguana teams:
Press Down, A, Down, A at the legal screen. Alternatively, press Down + B, Down + B, Down + B, Down + C.

Bad team mode:
Press Start, A, Down, A, Start(2) at the legal screen.

Fumble mode:
Press C, A, B, C, A, B at the legal screen.

No fumbles:
Press B, A, B, A, B, A at the legal screen.

Play continues after tackle:
Press B, A, Start(4) at the legal screen.

Goal line jumps:
Press C, A, Start(2), A, B at the legal screen.

Slippery mode:
Press A(6) at the legal screen.

Night mode:
Press Start, A, Down, Start, A, Down at the legal screen.

Grenade mode:
Press Down(2), Start, Down(2), Start at the legal screen.

Power Team mode:
Press B, A, Down, A, Start(2) at the legal screen.

Speed burst:
Press B, A, C(2), A at the legal screen.

Stealth mode:
Press Start(2), B, Start(2), B at the legal screen.