Nintendo Game Boy Advance Game Link Cable
good for some....
I got this because I had a pokemon game and wanted to trade and battle with my brother, but guess what. We had 2 different third-gen games, he had an advance, I had an SP, but we soon found out that he needed to get an SP which won't happen in the near future, I don't think. I wish it could work no matter what the case, but it doesn't so the performance lacks goodness for me right now.