Medieval Lords puts you in the center of a medieval city, which you must manage, develop, make prosperous, and protect. Be sure to take into account the external constraints of time, terrain, and attacks, as well as the internal constraints of the population's needs and technological development. When external attacks occur, you'll have little time to set up the last elements of defense, which consist of destroying bridges, closing access roads, and emptying exposed granaries. It's up to you to manage the constraints of each zone among the low city (populous and agricultural), the average city (commercial), and the high city (strengthened and rich).
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