Freemium title Age of Empires Online has invaded Steam, complete with discounts during its launch week. Until April 3, the Persian, Greek, Egyptian and Celtic civilizations are half-off for $5 each. If you like what you get from the free download, you can purchase the "All-in-Wonder Bundle" for $16.99.
The best-selling real-time strategy series of all time continues with Age of Empires Online! Join friends and friendly rivals from around the world as you create a living, growing online empire. Centered around your unique online capital city, embark on quests, play with or against friends, and immerse yourself in epic tales, quirky characters, adventure, history and strategy. Age of Empires Online will offer free-to-play experiences via Games for Windows.