X3: Terran Conflict (Usually shortened to X3TC and trademarked as X3: Terran Conflict), is a space trading and combat simulator from German developer Egosoft and is the culmination of their X series of computer games. Described as a stand-alone game, based on X3: Reunion, it boasts new plot lines, features and assets. It was first released on October 2008 for the European market and Steam.