The correct way to clean old video games is slightly more complex.

However, the Western model’s ZIF designloosenedthe cartridge.

A Q-tip dipped in isopropyl alcohol of at least 90 percent concentrationshould reliably fixa dirty cartridge.

iFixit thoroughly explains why you shouldn’t blow on Nintendo cartridges (and how to actually fix them)

However, corrosion or especially stubborn grime might require opening the case with a screwdriver.

Image credit:iFixit