I have confirmed that all the buttons are working in the game. I don't think there's much yellowing on the screen, but this is just my subjective opinion, so please check the images and make your own judgment. I think you can also judge any other minor scratches or blemishes from the images. It looks clean at a glance. ⚠ This is an item for the main unit only. Please note that the software, memory stick, charger, and battery for operation check are not included for safety reasons. This is a used game console that has only been briefly inspected by an amateur and is an old model. To prevent any problems, please only purchase if you agree to these conditions.