The Crusader Kingdoms were Good-aligned polities on the territory of the Dread Empire of Praes, following the First Crusade.
The Crusader Kingdoms held through the Second Crusade, which was launched to overthrow them in order to re-establish the Dread Empire under Dread Emperor Terribilis II and ended in the second destruction of the Tower.
After the Third Crusade, the Crusader Kingdoms collapsed and never again came into being.