Effect	Code
Mummies team	YOMUMMY
Bonus Antarctica stadium	XMASGIFT
Electronic sidelines	WOOGIEWOOGIE
Bonus Dodge City Stadium	WILDWEST
Praetorians team	WESALUTEYOU
Bonus Tiburon stadium	WEPUTITHERE
EA Sports team	WEARETHEGAME
Bonus salvage stadium	WASTELAND
No interceptions	VISEGRIPS
Madden Millennium team	TIMEWARP
Junkyard dogs team	TETANUS
All Madden team	TEAMMADDEN
Alpha Blitz Stadium	SNAPTAKLPUNT
All 70's team	SIDEBURNS
Tiburon team	SHARKATTACK
Clowns team	SCARYCLOWN
Toymakers Team	SANTATEAM
More fumbles	ROLLERJAM
Team makes fewer penalties	REFISBLIND
All 80's team	REAGANOMICS
QB never gets sacked	QBINTHECLUB
100 yard passes	PIGSKINSFLY
More interceptions	PICKEDOFF
Sugarbuzz team	PANCAKE
More injuries	PAINFUL
More broken wrap tackles	OLD SCHOOL
Speed ball	NEEDFORSPEED
Super jumps	MOONBALL
All 60's team	MOJO
David vs. Goliath	MICEANDMEN
Bonus Gridiron stadium	MAXIMILLIAN
Bonus Maddenstein stadium	MADDENSTEIN
Nile Hi Stadium	KINGHUT
Bonus EA Sports stadium	ITSINTHEGAME
Industrials team	INTHEFUTURE
Floating heads	GUILLOTINE
Players harder to tackle	GREASEDPIG
Super speed burst	GOTTHEROCK
Points for defense1	FRACORAS
20 yard first downs	FIRSTIS20
Bonus Tiberium stadium	ETTUMADDEN
Curved space and time	EMC2
10 pt. TDs; 7 pt. Field goals	DRBENWAY
Marshalls team	COWBOYS
Players fatigue faster	CHAINSMOKER
Ball camera	BETHEBALL
Bonus circus stadium	3RING

Always win coin toss:
Repeatedly press Start at the coin toss screen.

Glitch: Go to other side of field:
Enable any code and begin game play. Get the ball, then run out of bounds. You should go to the other side of the field.