A Magical Medieval Western Europe is a 144-page supplement for GMs and players who wish to add a touch of realism to their game. It's designed to provide you flexibility in creating your own world. It provides players and GMs information about the medieval period and how D20 magic would change a traditional medieval setting. Generation systems for kingdoms, cities, manors, aristocratic wealth and landholding; a thorough construction system; and an economic simulator allowing GMs to recreate the high middle ages with ease.