Ultra-Rare SFC Super Famicom GAME PROCESSOR Game Processor RAM Cartridge, genuine Japanese product. This is a software cartridge used as teaching material in a school that taught game development. It allowed users to play games by writing their own programs onto it. Power-on tested, but since no game is written on it, only a black screen will appear upon startup (it's not broken). If a game is written on it, the written game software will be displayed. I've only seen the actual item once in a store a few years ago, and it's rarely seen even in retro game specialty stores. It's a valuable item that's not for sale and was used for educational purposes, so it's not often available. However, since it's quite difficult to find an environment to write and play games on it now, it might be more suitable for collectors. There is no stamp on the upper right corner of the back of the software, as it was for educational use. Cleaned with anhydrous ethanol and retro game revival agent, but please understand that we cannot guarantee against operational issues due to compatibility with the main unit or contact problems. The condition is based on the seller's subjective assessment. We have described it as much as possible in the photos and description, but since it is a used item, please check the photos before purchasing if you are concerned. Please feel free to consult with us in the comments for combined purchases. We will discount 150 yen from the second item onwards for combined purchases. Please understand and confirm the photos and description before purchasing. We ship using bubble wrap and cushioning materials. We cannot accept returns or exchanges to prevent swapping and troubles. Please note that significant price negotiations will result in an immediate block. It may sell out as it is also being sold on other sites. We will try to ship as quickly as possible. Thank you.