Are you an Empire-Building Prodigy? A Siege Genius? A Tactical Mastermind? Then Join the Siege. New to Windows 8.1 for PC and tablets and Windows Phone 8 and 8.1, Age of Empires: Castle Siege is a free to play game that brings all the strategy and combat Age of Empires is known for to touch based screens. Choose from one of several civilizations, expand your castle into a massive city, and defend your walls against marauding empires and, when your newly trained army is ready, lay siege to other castles built by online opponents. If you have multiple Windows 8 devices, no problem! Your game progress is always saved to your gamertag. Download today and battle friends across platforms – any Windows 8.1 PC, tablet or Windows Phone 8 or 8.1 can join the siege.