Age of Empires II: The Conquerors is a substantial expansion for the 2000 real-time strategy game, The Age of Kings, requiring the base title to play. This add-on focuses on legendary leaders, introducing five new civilizations (Aztecs, Mayans, Spanish, Koreans, Huns), four new campaigns, eleven unique units, and twenty-six new technologies. The core loop remains resource management and military conquest across four historical Ages, now deepened by fresh strategic options and new gameplay modes.