Age of Empires II: The Age of Kings is a real-time strategy video game. It is the second game in the Age of Empires series. The Age of Kings is set in the Middle Ages and contains thirteen playable civilizations. Players aim to gather resources, which they use to build towns, create armies, and defeat their enemies. There are five historically based campaigns, which conscript the player to specialized and story-backed conditions, as well as three additional single-player game modes.