Madden '98 
Cheat Codes:

LEECH--Better Defensive Back
GLOVES--Easier Catches
BIGFOOT--Better Kicking
JACKHAMMER--Better Stiff Arm

Extra Teams:

ORRS HEROES--EA Sports Team
LOIN CLOTH--Tiburon Team
LEADERS--All Time Leaders
COACH--All Time All Madden
PAC ATTACK--All 60's Team
STEELCURTAIN--All 70's Team
GOLD RUSH--All 80's Team
ALOHA--NFC
LUAU--AFC

Extra Stadiums:

JETSONS--Astrodome(Old Oilers)
DAWGPOUND--Cleveland Browns Stadium
SNAKE--Old Oakland Stadium
DANDAMAN--Old Miami Dolphins Stadium
OLDDC--RFK Stadium(Old Redskins)
SHARKSFIN--Tiburon Sports Complex
GHOST TOWN--Wild West(late 1800's Texas)