De Loire-vallei in de 15e eeuw. Spelers kruipen in de huid van invloedrijke prinsen en verdelen hun krachten om te scoren door middel van handel, landbouw, stedenbouw of wetenschap.
The game is set in the Burgundy region of High Medieval France. Each player takes on the role of an aristocrat, originally controlling a small princedom. While playing they aim to build settlements and powerful castles, practice trade along the river, exploit silver mines, and use the knowledge of travellers.
The game is about placing settlement tiles into the princedom. Every tile has a function that starts when the tile is placed. The princedom itself consists of several regions, each of which demands its own settlement tile.
The core game mechanism involves two dice. The pips show the kind of action the players are allowed to do (example: roll a 2 and a 5: using the 2 the player buys a watch tower and places it on a 5 city tile which triggers the function of the tower with additional advantages).
It is also possible to influence the dice, so the player is not completely subject to luck.
The rules include basic and advanced versions.