Principia Moderni, or "The Beginning of the Modern" in Late Latin, is a map game beginning in the final days of the Middle Ages in Europe, and the early days of the Ming Dynasty in China -1420 C. E. The House of Hohenzollern has become the Electorates of Brandenburg - though most of the power in the Holy Roman Empire still lies with the Habsburgs. Joan of Arc has defeated the English at Orleans. The city of Tenochtitlan is founded by the Aztecs. The Timurid Empire has united Central and West Asia, and the Yongle Emperor sends out Zheng He to voyage westward. It is a turbulent era; in other words, an era of change; an era in which power is cemented.