Explore all the original campaigns like never before as well as the best-selling expansions, spanning over 200 hours of gameplay and 1,000 years of human history. Age of Empires II Definitive Edition … Age of Empires II Definitive Edition celebrates the 20th anniversary of one of the most popular strategy games ever with stunning 4K Ultra HD graphics, a new and fully remastered soundtrack, and brand-new content, “The Last Khans” with 3 new campaigns and 4 new civilizations.