| Effect | Code |
| 1972 Raiders | 32767 |
| 1972 Steelers | LEARNTOSWIM |
| 1976 Patriots | 10MOREMIN |
| 1976 Raiders | TONSOFMEAT |
| 1981 Chargers | DRBENWAY |
| 1981 Dolphins | 3000 |
| 1985 Bears | ONELINECHNGE |
| 1985 Dolphins | CTHULHU |
| 1986 Broncos | MILKBAR |
| 1986 Browns | FUNKENSTEIN |
| 1988 49ers | COSMICSLOP |
| 1988 Bengals | GAMMALITE |
| 1990 Bills | CNOTES |
| 1990 Giants | ALTXY |
| 1992 Bills | BEENLIKETHAT |
| 1992 Oilers | FLUFFY |
| 1995 Colts | GREASY |
| 1995 Steelers | STILLERS |
| 1997 Broncos | NUMINOUS |
| 1997 Packers | HUGECHICKIN |
| 20 yards for a first down | FIRSTIS20 |
| All 60s team | MOJO |
| All 70s team | SIDEBURNS |
| All 80's team | TRICKLEDOWN |
| Ball camera | BTHEBALL |
| Bonus All-Madden team | TEAMMADDEN |
| Bonus Centurian team | PHALANX |
| Bonus Clown team | KILLERJOKE |
| Bonus EA Sports team | WEARETHEGAME |
| Bonus Industrials team | INTHEFUTURE |
| Bonus Marshall's Fantasy team | COWBOYS |
| Bonus Mummies team | THOTH |
| Bonus Nile Hi stadium | VALLEYOKINGS |
| Bonus Sugar Buzz team | SNAPTACLEPNT |
| Bonus Tiburon team | SHARKATTACK |
| Curved space time | QUANTUM |
| David vs. Goliath mode | QUARKANDSTAR |
| Electric sidelines | CHAOS |
| Electric sidelines | OLDSPARKY |
| Floating heads | EXISTENIAL |
| Fumbles | HANDSOFLARD |
| Hidden 4th And Incas stadium | TENOCHTITLAN |
| Hidden Alpha Blitz Stadium | PANCAKES |
| Hidden Dodge City stadium | WILDWEST |
| Hidden EA Sports stadium | ITSINTHEGAME |
| Hidden Savage Field stadium | PCBS |
| Hidden Tiburon Bros. stadium | SIDESHOW |
| Hidden Tiburon stadium | WEPUTITHERE |
| Hidden Xmas Rush stadium | XMASGIFT |
| More fumbles | ROLLERGIRL |
| More injuries | PAINFUL |
| More interceptions | PICKEDOFF |
| More speed | NO2 |
| No fumbles | MAGANASAVE |
| No interceptions | NOPICKS |
| Perfect passes | QBINTHECLUB |
| Player fatigue quickly | FINALBUILD |
| Players harder to tackle | WIMPBALL |
| Stiff arm | SMACKDOWN |
| Super jumps | AIRMADDEN |
| Super jumps | MOONBALL |
| Super speed burst | PHOTON |
| Team makes fewer penalties | REFISBLIND |
| Tiberium stadium | SAMEASITEVER |