Software, instruction manual, outer box We have confirmed the operation, but as the software is several years old, we cannot guarantee its startup or operation at the buyer's end. Please understand this before purchasing. *As this is a used item, there may be scratches and stains. We do not recommend this item to those who are concerned about minor details or are overly sensitive. Thank you. #SEGA #MasterSystem #ArgosNoSenshi (Argos Warrior)