Super Bowl game:
Select the "New Season" option from the main menu. Enter the Playoffs. A list of games will be displayed. Press Start to display a new list. Repeat this action until a "Super Bowl" entry appears. Select that game, then press Start.

Cheat codes:
Select the "Front Office" option on the main menu. Select the "Sign Up" option to display the player creation screen. Enter one of the following player names and any value for the remaining statistics. Press Start to display the point distribution screen. Distribute all available points in any manner. Save the new player. If a code was used to activate a new team, it will appear when a new game is started.

All '50s and '60s team
Enter HAPPY_DAYS as a player name.

All '70s team
Enter DISCO as a player name.

All '80s team
Enter NEW_WAVE as a player name.

EA Sports team
Enter ITSINDGAME as a player name.

All Time All-Madden team
Enter BOOM as a player name.

No salary cap
Enter OVERPAID as a player name.

Two minute or 30 second quarters
Enter TOMMY_MC as a player name.

Sound test:
Press C, A, C, A, C, A, B at the title screen to display the sound test menu.