two Mesoamerican civilizations: the Maya and the Aztec. The Age of Kings was a bigger critical success than the first two games, with Game Rankings and Metacritic scores of 92%. Microsoft shipped out more than two million copies to retailers, and the game received numerous awards and accolades. Critics agreed that The Conquerors expanded well on The Age of Kings, though issues of unbalanced gameplay were raised. The Age of Kings and The Conquerors won the 2000 and 2001 "Computer Strategy Game of the Year" awards from the Academy of Interactive Arts & Sciences, respectively. In April 2013, Age of Empires II: HD Edition was released on the Steam digital distribution platform for Windows operating systems. The HD Edition includes both the original game and the expansion The Conquerors, as well as updated graphics for high-resolution displays. Originally a fan-made modpack made for The Conquerors, Age of Empires II: The Forgotten was an unofficial expansion that added a new campaign, playable civilizations, maps, and quality of service updates. The Forgotten was later developed into an official expansion with SkyBox Labs and Forgotten Studios, and in November 2013 The Forgotten HD was released by Microsoft exclusively for the HD Edition on Steam. A third expansion named The African Kingdoms was released by Microsoft in November 2015, also exclusively for the HD Edition. A fourth expansion entitled Rise of the Rajas was released on December 19, 2016. On August 21, 2017, Microsoft announced Age of Empires II: Definitive Edition. In June 2019, Adam Isgreen, now the Franchise Creative Director for Age of Empires, shared more information regarding the Age of Empires II: Definitive Edition at the Electronic Entertainment Expo 2019. He confirmed that the Definitive Edition was being developed by Forgotten Empires, Tantalus Media, and Wicked Witch Software. He announced that the game would feature new 4K graphics, Xbox Live support for multiplayer, exclusive achievements, four new civilizations (Bulgarians, Cumans, Lithuanians, Tatars), three new campaigns, a new spectator mode and tournament features, and additional quality of life improvements. It was released on November 14, 2019. Bert Beeckman, co-founder of Forgotten Empires, confirmed on June 12 that Age of Empires II: HD Edition would not be removed from sale after the release of Age of Empires II: Definitive Edition. Age of Empires III Age of Empires III, released on October 18, 2005, was built on an improved version of the Age of Mythology