Sins of a Solar Empire

Sins of a Solar Empire is a science fiction real-time strategy game developed by Ironclad Games and published by Stardock Entertainment for Microsoft Windows. The game was released on February 4, 2008, and its first content expansion titled Entrenchment was released as a download on February 25, 2009. Sins is a RTS game that incorporates some elements from 4X strategy games; promotional materials describe it as "RT4X."