Directions for a game which models the feudal system of 11th century Europe are presented for high school and college history courses. The game demonstrates the medieval dependency of social structure on land holdings and vassal obligations. It also permits the expression of personal ambition, with results dependent on the loyalty and permissiveness of others in society. The importance of the "upward" responsibility of the vassal and the necessity of the lord's fulfilling his "downward" responsibility are demonstrated. The game requires 20 time periods and involves 36 players: 4 viscounts with 8 barons each. Definitions of terms used during the medieval period, the dependency status of players, and procedures for playing are outlined. The major direction the game can take is either toward greater unity or toward disintegration. (KC)