"The Age of Empires II: Definitive Edition" is a remastered version of the classic real-time strategy game originally released in 1999. It features enhanced graphics, improved gameplay mechanics, and new content, including additional civilizations and campaigns. Players can build empires, gather resources, and engage in battles across various historical settings. The game includes a variety of modes, such as single-player campaigns, multiplayer matches, and cooperative gameplay. Players can choose from different civilizations, each with unique units and technologies, allowing for diverse strategies. The Definitive Edition also supports modding, enabling the community to create and share custom content.