CheatCodes.com has all the official Madden NFL 06 GameCube cheats to unlock everything. If you know of any that we don't have, please let us know.
All published and official codes as of Tuesday May 21, 2013 for Madden NFL 06 are shown below. We also have this game on PlayStation 2, Xbox, PC, Game Boy Advance, GameCube, Nintendo DS, PSP, Xbox 360, and sometimes tricks from other game systems will also work on GameCube.
During the preseason there will be a shirt it will say "go to the phone to see if your on the Madden Cover". Then go to your phone you'll either be on it or not.
In NFLSuperstar mode when your on offense make the defense choose "Field Goal Block" then the offense chooses any pass play. Don't choose a pass play that you fake to your HB or the defense will sack your QB.
When your in a game press pause then go to gameplay settings then go to A.L. You can put your opponets QBaccuracy, ect. Then do "Hail Mary" pass to either B or X because the others are around each other.
At the main menu go to My Madden and then go to gameplay setting. Then go to Penalty and turn off offsides. then save go to a game and have a guy on defense go up to the line and you won't go offsides then hold the sprint button down and when the play starts you'll go in fast and sack the quarterback.
Found some tricks that we don't have? Got some helpful hints, tips, or tactics we don't know about? Tell us and you could win a free GameCube game (or any other game you want for any video game system)!