Castle Siege was made available on iOS in 2015 and Android in 2017. Unlike any preceding Age of Empires game, Castle Siege takes the form of a tower defense game. It was developed by Smoking Gun Interactive and Microsoft Studios, and was formally announced on August 26, 2014. Released in 2014, the app featured micro-transactions to aid in rapid development of a castle and to improve defensive and attacking capabilities.
Massively multiplayer online tower defenseĪge of Empires: Castle Siege was a free-to-play medieval massively multiplayer online tower defense game in the form of a Windows app, designed for Windows 8.1 and Windows Phone. 2014 video game Age of Empires: Castle Siege