This is only the Halobot software for the WonderSwan. I have confirmed that it starts up and that the save data remains as of August 16, 2025 (Image 3). Please be aware that cartridge software may be difficult to start or may require techniques such as half-insertion, so please be careful if you are a beginner. Since this is an old item, I cannot guarantee the backup battery for the save data. Thank you for your understanding.