I have confirmed that the game can be read on my Game Boy Color. * Regarding software with built-in backup batteries, I do not guarantee the battery's functionality. * All items are guaranteed for initial functionality only. Returns are generally not accepted for reasons beyond initial startup confirmation, such as "stopping midway through gameplay." This is a used item and has been stored at home. Please purchase only if you understand this. To prevent item substitution, returns and exchanges are not accepted after purchase. Items will be shipped in an OPP bag and bubble wrap.