| Effect | Code |
| 100 yard field goals | BIGFOOT |
| 100 yard passes | PIGSKINSFLY |
| 1972 Raiders team | GETMEADOCTOR |
| 1972 Steelers team | DONTGOFOR2 |
| 1976 Patriots team | HACKCHEESE |
| 1976 Raiders team | GAMMALIGHT |
| 1981 Chargers team | BUILDMONKEYS |
| 1981 Dolphins team | 15MOREMIN |
| 1985 Bears team | DOORKNOB |
| 1985 Dolphins team | CHICKIN or CHICKEN |
| 1986 Broncos team | BLUESCREEN |
| 1986 Browns team | KAMEHAMEHA |
| 1988 49ers team | CALLMESALLY |
| 1988 Bengals team | PTMOMINFOGET |
| 1990 Bills team | SPOON |
| 1990 Giants team | PROFSMOOTH |
| 1995 Colts team | PREDATORS |
| 1995 Steelers team | STEAMPUNK |
| 1997 Broncos team | EARTHPEOPLE |
| 1997 Packers team | TUNDRA |
| 5 yard first downs | POPWARNER |
| All '60s team | MOJOBABY |
| All '70s team | LOVEBEADS |
| All '80s team | BIGHAIR |
| All '90s team | INTERNS |
| All-Madden team | TEAMMADDEN |
| Alternate scoring rules2 | DRBENWAY |
| Ball chase view | VERTIGO |
| Bonus 4th And Incas stadium | QUETZLCOATL |
| Bonus Alpha Blitz stadium | PANCAKES |
| Bonus Antarctica stadium | XMASGIFT |
| Bonus Cosmodome stadium | SPACEBALL |
| Bonus Dodge City stadium | WILDWEST |
| Bonus EA Sports stadium | ITSINTHEGAME |
| Bonus Gridiron stadium | KLAATU |
| Bonus Maddenstein stadium | COUNTMADDEN |
| Bonus Nile Hi stadium | DENILE |
| Bonus Salvage Field stadium | TETANUSHOT |
| Bonus Tiberium stadium | FEEDTHELIONS |
| Bonus Tiburon Bros. stadium | COTTONCANDY |
| Bonus Tiburon stadium | WEPUTITTHERE |
| Curved space and time | MOEBIUS |
| Easy to intercept | PICKEDOFF |
| Electric sidelines | STATICCLING |
| Fast passes | FASTFORWARD |
| Faster fatigue | FINALTIME |
| Faster turbos | GOTTHEROCK |
| First down after twenty yards | FIRSTIS20 |
| Floating heads | TALKINGWHAT |
| Frequent fumbles | ROLLERGIRL |
| Frequent injuries | PAINFUL |
| Harder to tackle players | TEFLON |
| Hidden Clown team | CARNEYS |
| Hidden Comets team | ONESMALLSTEP |
| Hidden EA Sports team | WEARETHEGAME |
| Hidden Industrials team | INTHEFUTURE |
| Hidden Junkyarddogs team | MADMADDEN |
| Hidden Madden Millennium team | TIMELESS |
| Hidden Marshalls fantasy team | COWBOYS |
| Hidden Monsters team | KTHULU |
| Hidden Mummies team | WRAPPEDUP |
| Hidden NFL Millennium team | ALLTIMEBEST |
| Hidden Praetorians team | DOASWEDO |
| Hidden Sugarbuzz team | TREMENDOUS1_2 |
| Hidden Tiburon team | SHARKATTACK |
| Hidden Toymakers team | XMASFILES |
| Hidden Vipers team | PLAYWTHHEART |
| Large vs. small team | MINIME |
| Less penalties | REFISBLIND |
| Longer jumps | SPRONG |
| No interceptions | EXPRESSBALL |
| Points for defense1 | FRAPLPRO or FRACORAS |
| QB is never sacked | QBINTHECLUB |
| Receivers catch better | MAGNASAVE |
| Stiffer arm | SMACKDOWN |
| Super speed burst | NO2 |
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