Bonus teams
At the team selection screen, press Circle for the Super Bowl teams. Press Circle(2) at the team selection screen for the All-Star teams.

Cheat mode:
Enter the Easter Egg menu and enter one of the following codes to activate the corresponding feature:

Result - Code:

Expert mode: SMARTER_CPU
Faster players: BOOSTER
Flat players: TWO_D
Frame by frame movement: STROBE_LIGHT
Great hands for receivers: STICKEM
Harder and longer passes: SHOOTERS
Harder tackles: CRUNCH
Huge players: GIANTS
989 Studios players: 989_SPORTS
All Bobo teams: ALL_BOBO
Ball carrier has speed bursts: ROCKETMAN or ROCKET_MAN
Cheerleader show after game: FASHION_SHOW
CPU plays badly: CHEATERS
Improved defensive line: LINE_BUSTER
Improved running back: SUPER_FOOT
Large football: BIG_PIG
More hits: JACKHAMMER
More injuries: HAM_INJURY
Longer field goals: BOOM_BOOM
Opponent team can only kick ball about 20 yards: AIR_CPU
Play on bonus GameDay Field: GD_FIELD
Players fatigue easier: FATIGUE
Players from last season: OLD_SCHOOL
Players have identical attributes: ALL_EVEN
Players have more endurance: ENDURANCE
Players named after basketball stars: BASKETBALL
Players named after European league stars: EURO_LEAGUE
Players named after programmers: RED_ZONE
Players named after U.S. Presidents: OVAL_OFFICE
Small players: FLEA_CIRCUS or TINY_GUYS
Small, fast players: POP_WARNER
Super special moves: SPECIAL_MOVE
Tall and skinny players: STICK_MEN
Turbo mode: COFFEE_BREAK
Unbeatable team: UNBEATABLE
View game credits: CREDITS