Okay...in the past, these were excellent cheating devices. However, there is now a recall on these. The Ninentdo Company put special chips in all their gameboy advance games recently, to BREAK the gameshark so that it could'nt be used to cheat with. If you feel like throwing away $20.00 of your hard erned money on this piece of garbage, go right ahead. It's your loss. I myself bought a gameshark to cheat with my pokemon emerald version. I soon found out that it was no where near what I was hoping for. DONT BUY THIS PRODUCT