Age of Empires II: Definitive Edition is a 2019 real-time strategy video game developed by Forgotten Empires and published by Xbox Game Studios. It is a remaster of the 1999 game Age of Empires II: The Age of Kings, celebrating the 20th anniversary of the original. It features significantly improved visuals, supports 4K resolution, and includes all previous expansions from the original and HD Edition. In addition, the game includes The Last Khans, an expansion that adds four new civilizations based on Central Asia and Eastern Europe, as well as four new campaigns. Age of Empires II: Definitive Edition was released for Windows on November 14, 2019, and was ported to Xbox One and Xbox Series X/S on January 31, 2023.

Age of Empires II: The Age of Kings is a real-time strategy video game developed by Ensemble Studios and published by Microsoft. Released in 1999 for Microsoft Windows and Macintosh in 2001, 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; multiplayer is also supported.