Yes, i have it!
you need a gameshark code
You cannot get a gameshark in Pokemon emerald its a thing you buy and plug into your GBA (GameBoy Advance) you type a code into and there you go.
Yes, GameShark codes work in Pokemon Emerald for the PC. My codes work when I try them.
get a gameshark
Use a gameshark.
you need a gameshark
You can buy a Gameshark, and look up the game in the Gameshark. It should work.
yes
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Gameshark or action replay
You will need a gameshark