You can't, you can first beat the game all by your self and then start a new game with all new cool stuff though...atleast i don't think you can enter cheats???
Depends on the game your playing. If the game your playing has cheats it will normally be in options but some have complicated ways to enter codes which you can find out from cheat sites like...
it depends on what game you are playing. Or for more information about gamecube cheats go to gamewinners.com or go to gamefaqs.com for more information about video game gamecube cheats
To enter a cheat code press and hold first L then B and finally R. keep holding those three buttons and then stop holding in order of said. First release R then release B and finally L. Remember to...
How to enter cheats into a Nintendo Game Cube System :).
well go to cheat planet and click on the cheats tab then click gb( it stands for gamecube) then click on the first letter of the game tittle...