This listing is for the exact physical development/test cartridge shown in the photos. Acquired as part of a private lot, no further history or provenance documentation is available. It is in working condition. When tested on a standard retail Nintendo DS, it boots to a Japanese-language screen. Additional photos or videos are available on request. DSi and 3DS compatibility is not confirmed. No additional functionality has been tested or is guaranteed. Sold strictly as a physical item as-is.