Mario and Wario Mario Paint Prime Goal 3 I cleaned them with disinfecting wet wipes, but I couldn't remove all the dust from the small areas. The cartridges have discoloration due to age. There are writings in permanent marker. I do not have a game console on hand, so I have not been able to test their operation. I cannot accept any refunds or returns for any reason after purchase. Please only purchase if you understand and agree to this beforehand.