In Age of Empires II: HD Edition, fans of the original game and new players alike will fall in love with the classic Age of Empires II experience. Explore all the original single player campaigns from both Age of Kings and The Conquerors expansion, choose from 18 civilizations spanning over a thousand years of history, and head online to challenge other Steam players in your quest for world domination throughout the ages. Originally developed by Ensemble Studios and re-imagined in high definition by Hidden Path Entertainment, Skybox Labs, and Forgotten Empires, Microsoft Studios is proud to bring Age of Empires II: HD Edition to Steam!

Age of Empires II has been re-imagined in high definition with new features, trading cards, improved AI, workshop support, multiplayer, Steamworks integration and more!

As for the special DLC for the game. The Forgotten is the first  official expansion for the Age of Empires II universe in over ten years. Challenge friends with five additional civilizations and technologies, battle through seven campaigns, vanquish opponents in new game modes on massive maps, or shoutcast a match and stream it all through twitch.tv.

Crafted exclusively for Age of Empires II: HD Edition; The Forgotten expansion builds upon the Age of Empires II: HD experience and includes Steam workshop support, steam trading cards, and more!

In The Forgotten, you'll have 5 new civilizations to explore and control, including the Italians, Indians, Slavs, Magyars and Incas. Plus, a slew of new campaigns that span the course of history! Learn about the man who inspired the myth that was Dracula! Search for the legendary city of gold known as El Dorado, and even the titular Battles of the Forgotten!

So, if you're ready to challenge the world in new and interesting ways, a good place to start is in Age of Empires II: HD Edition The Forgotten