Does anyone know if a foreign video game would work for my Gameboy SP? I know that PS2 games from different regions don't work on each other's systems, but I was hoping it'd be different for the Gameboy systems. I'm hoping to buy a German video game to help me practice and learn more German :)

Oh, and also, does anyone know where to buy foreign video games? I mean, I know there's always Amazon, but I'm not sure most of the sellers there would want to send anything all the way out here.