instruction: Extract who developed Age of Empires 2 and the year it was released from the following text and separate them with a comma
context: 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, 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.
response: Ensemble Studios, 1999