Age of Empires: Castle Siege on the iPad

Microsoft has now launched its free-to-play historical strategy game Age of Empires: Castle Siege worldwide for the iPhone and iPad. The game was previously available in a soft launch in Canada earlier this year.

The iOS version will allow iPhone and iPad players of the game to play against those who have the previously released Windows 8.1 and Windows Phone versions. Here's a quick summary of the game, which was developed by Smoking Gun Interactive:

Age of Empires: Castle Siege is a cross-platform real-time strategy game that allows players to build and guide an empire through the Medieval Era. Players choose from one of several civilizations, including the Britons, Teutons, and Kievan Rus, and then upgrade their keep, fortify walls and garrison defensive troops to protect from marauders. Then they must train an army to raid other cities, and command them in battle to dismantle opponents' defenses. Allowing players to control all the units at any time, creates a much deeper, more interactive gameplay experience than other titles in the genre. Through the ages, players build their castle, research technology, and recruit a variety of powerful heroes including Saladin, Richard the Lionheart, and Joan of Arc. By outsmarting attackers and overwhelming defenders, gamers can earn achievements and climb to the top of the leaderboards.