I am not sure where they are from or what they do but they seem to be missing a chip. These might just be useless husks, but they are shaped like gameboy carts, although they don't boot up. I don't even know what they're for. There's a slot in the side of them that looks like it holds a chip. If you'd like pictures, pm me. If you'd like to buy them, 25 of these suckers for $10 + shipping and handling.