The third printing of Root introduced some corrections and minor balance adjustments to the faction boards. These changes are available as a PDF at no cost. This physical upgrade kit provides a full set of replacement boards for owners of the first and second printing of Root, including both the base game's factions and those found in the Riverfolk Expansion. If you're not sure which printing of Root you have, look next to the barcode on the back of the box. This product is only for the owners of the first and second printing of the Root base game or Root: The Riverfolk Expansion.