I have confirmed that it is working, but I have not tested it for an extended period. I am not an expert on games; I am selling games I played as a child. Please refrain from purchasing if you are concerned about the condition. The box has dents and scratches. Please check the images. A classic Game Boy game, Super Mario Land. - Game Title: Super Mario Land - Brand: Nintendo - Model: DMG-MLA - Barcode: T490923700500899 - Language: Japanese Thank you for viewing.