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game shark cheat codes are long numbered and lettered codes that you enter on a game shark device that fits is a game boy advance.
THE GAME SHARK CODE IS: 2ehji4 + your real name
They have to be imported from sonic advance
You don't; not every game has button codes.
no,cant you buy a game shark it is not expensive.
amy is already unlocked in sonic advance. in sonic advance 2 beat the game with every character with all 7 chaos emeralds to unlock her. in sonic advance 3 beat toy kingdom with sonic as leader ro unlock her.
19 28 37 46 45 88 12 34 56 78 90
Just buy a gameboy advance gameshark, then look up the codes...
No instead there are three Sonic titles under the name of Sonic Advance, Sonic Advance 2, and Sonic Advance 3.
You might be able to get a Game Boy Advance Game Shark for about 20 dollars .
Buy a Game Shark then the device should allow you to plug in codes.
Sonic Advance 1 and 2.