Raise a city on the banks of the Tigris during the Islamic Golden Age, beginning with a single home, a grain field, and a clay pit, and growing it into a capital of the medieval world. Turn clay into brick, flax into paper, and cotton into cloth as you unlock each new facility in turn — from brick kilns and quarries to bustling bazaars. But knowledge is the true engine of progress: found the House of Wisdom, translation houses, and observatories to fuel the scholarship that unlocks your grandest works and ushers in a golden age.