whell i have a fire red but they are the same. go on leaf green 1.0 or 1.1 and push right. Now go to the botom and when you see (New Code) push B on it then you put the name and the code on. Hope this helps.:)
Mrpieguy7 i was wondering WHAT ARE THE CODES
You cant, Only you can use a Game Shark.
Buy a Game Shark then the device should allow you to plug in codes.
i DONT ANYgameshark
Easy just put the game in the game shark and enter codes you know.
ther is none inless its on a game shark.
First get a gameshark then look online for codes after that put the gameshark in the leafgreen game then type in codes. Also the codes can get you Pokemon and items instead of looking and looking you can get them easily. Most gamesharks are $15 to $20. Hope this helps ;)
You Get a game shark for your Gameboy or Gameboy advanced
You'll need a game-shark or other cheat code device. The game itself does not have cheat codes. A game-shark (or game-genie, or whatever) replaces the games original programming with the cheat code data. when the game-shark is inserted into the console, the console will jump to the code screen before actually starting the game.
you will need action replay, game shark, and some other hack thingy.
Careful! This can destroy your game1
if you have an AR for the gba
http://www.gameshark.com/ The only way you can update it (that I have found out) is to put in new codes. Check this website for the codes! Hope it Helps! Jeff