The listing, 6 items: 4 for N64, 1 for GBA, and 1 for Game Boy Color has ended.
The Games include: Namco Museum for N64, Pokemon Stadium 2 for N64, an N64 controller (white), Madden '06 for Game Boy Advance, Shrek: Fairy Tale Freak Down for Game Boy Color, and a Transfer Pak for Pokemon Stadium 2. I tested all of them and they all work. All of them hold data and a save except for Namco Museum, which holds high scores until you power off the system. The condition is between Fair and Good. Getting some to turn on may require blowing into the cartridge, or gently inserting it into the system. Other than that, they all are great games. If you have any questions, please do not hesitate to ask.