The Charterstone Recharge Pack contains the components for a second campaign of Charterstone. It is completely optional as Charterstone is designed to be infinitely replayable after the first twelve-game legacy campaign.
The back side of the game board (included in the core game) is used for the second campaign. It contains all components that were permanently changed in the first campaign while allowing players to use unchanged components like wooden resources, meeples, and metal coins.
—description from the publisher