If you’re lucky enough to have some old game cartridges and a working console at home, you probably have a few games that don’t load up reliably. Before you waste your time blowing on them though, Ars Technica put together a great guide to get them working as good as new.
You can watch the video above for the full process, but basically you’ll need to open the cartridge with the proper screwdriver, then use brass polish and rubbing alcohol to clean the contacts on the PCB. The same process should work for everything from the oldest console games up to N64 classics. This should work pretty reliably for most busted cartridges, but if one really can’t be saved, there are still ways to put it to good use.