PRINTMadden NFL 01 (PC)
Enter one of the following codes to activate the hidden teams. The codes are entered at the "Secret Codes" option under "Settings":
| Code | Result |
| Lionpower | '57 Lions |
| Goldrush | '57 49ers |
| Jollygreen | '58 Giants |
| Stables | '58 Colts |
| Greenwings | '60 Eagles |
| Getem | '62 Texans |
| Therewasaman | '62 Oilers |
| Getem | '62 Texans |
| Outdoors | '63 Bears |
| Littlepeople | '65 Browns |
| Megiveyou | '66 Chiefs |
| Champs | '66 Packers |
| Whoshotjr | '66 Cowboys |
| Blitzer | '67 Rams |
| Snowplow | '67 Packers |
| Tundra | '67 Cowboys |
| Grayandblack | '67 Raiders |
| Heidi | '68 Raiders |
| Shocker | '68 Colts |
| Tvtimeout | '68 Jets |
| Nofluke | '69 Chiefs |
| Allfluke | '69 Vikings |
| MNF | '70 Browns |
| Geedyup | '70 Colts |
| Rideon | '70 Cowboys |
| Damnyankees | '70 Jets |
| Courage | '70 Lions |
| Marchon | '70 Saints |
| Peopleeater | '70 Vikings |
| Overtime | '71 Cheifs |
| Longestgame | '71 Dolphins |
| Stars | '71 Cowboys |
| Lucky | '72 Steelers |
| Perfect | '72 Dolphins |
| Airshow | '72 Colts |
| Airtime | '72 Jets |
| Sour | '72 Raiders |
| Redwithenvy | '72 Redskins |
| Orangejuice | '73 Bills |
| Junglecats | '73 Bengals |
| 83to55 | '73 Dolphins |
| Longlive | '73 Vikings |
| Defenders | '74 Dolphins |
| Struggle | '74 Raiders |
| Steelcurtain | '74 Steelers |
| Tark | '74 Vikings |
| Baseballteam | '75 Cardinals |
| Allaboutmadden | '75 Raiders |
| Angelcity | '75 Rams |
| Miracleleap | '75 Steelers |
| Purple | '75 Vikings |
| Hailmary | '75 Cowboys |
| Patgames | '76 Patriots |
| Madteam | '76 Raiders |
| Powerofpurple | '76 Vikings |
| Itscoldinhere | '77 Bears |
| Onemilehigh | '77 Broncos |
| Ghosttothepost | '77 Colts |
| Usateam | '77 Cowboys |
| Theghost | '77 Raiders |
| Roller | '78 Chargers |
| Recordnight | '78 Cowboys |
| Cannedtuna | '78 Dolphins |
| Dynasty | '78 Steelers |
| Holy | '78 Raiders |
| Roller | '78 Chargers |
| Earl | '78 Oilers |
| Comeback | '79 Cowboys |
| Pirates | '79 Bucaneers |
| Ramitdown | '79 Rams |
| Aheadatthehalf | '79 Redskins |
| Blackiscool | '79 Steelers |
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