Age of Empires is a real-time strategy video game developed by Ensemble Studios and published by Microsoft. The game was released in October 1997. Age of Empires was one of the first games to use the now-standard formula of building a base, gathering resources, and training an army to defeat opponents.

1. The game was developed by Ensemble Studios and published by Microsoft.
2. The game was released in October 1997.
3. The game has been played by more than 20 million people.
4. The game is set in the Middle Ages.
5. The game has three main campaigns.
6. The game has four expansion packs.
7. The game has been released for PC, Mac, and Xbox.
8. The game has been released for iOS and Android.
9. The game has been released for Windows Phone.
10. The game has been released for Windows 8.
11. The game features a number of different civilizations to choose from, each with their own unique strengths and weaknesses.
12. Age of Empires was a critical and commercial success, selling over two million copies and winning several Game of the Year awards.
13. A sequel, Age of Empires II: The Age of Kings, was released in 1999.