Yu-Gi-Oh! GX Duel Academy
Back when I was in the 7th grade, this was the greatest card game around. I still own a whole bunch of cards. Anyway, Yu-Gi-Oh! GX Duel Academy was and still is one of the best games I have played for the Game Boy Advance. The only downer to this game is how expensive it is to purchase the cards the you own in the real world when transferred to the game using the numeric code on the bottom left of the card. Other than that, a great game!