Rise of the Rajas adds four new campaigns drawn from the civilizations of Southeast Asia. Gajah Mada traces the rise of Majapahit's prime minister as he schemes to build a maritime empire across the Archipelago, balancing iron ambition against loyalty to his king. Suryavarman I follows a Khmer prince who seizes the throne amid civil war and hostile neighbors, building a legacy meant to outlast centuries. Bayinnaung follows a betrayed warrior who rises from nothing to construct the largest empire in Southeast Asian history. Le Loi chronicles a minor Vietnamese noble who unites fractured factions, expels Ming occupiers, and restores independence to Dai Viet.