Golden Disks are relics scattered around the world of Mirth. They hold knowledge and information from Maxion himself, who placed them with in temples scattered around the planet.
As their name implies they are golden discs, like record disks but thicker. They sport alien symbols and images etched into their side.
The disks hold information of all sorts, they could contain information on advance weaponry, alternate modes such as boats and planes, the locations of other relics, etc. It is because of the information they have that they are so sought after by all parties.