Sins of a Solar Empire Rebellion is the first stand-alone expansion to the real-time strategy game, Sins of a Solar Empire. In Sins of a Solar Empire, you will control a spacefaring empire in a world set in the distant future. Your task is to conquer star systems using military, economic, and diplomatic means.

Rebellion, as a stand-alone expansion, contains all the features of the previous expansion, Sins of a Solar Empire Trinity. Additional content aside from the Trinity expansion are also included such as new factions (Loyalist and Rebel), the new Titan Class Warships, new and updated Capital Ships, new Corvetto Class ships, and finally, updated visuals.

The game now also includes multiple paths towards your victory, including Military, Diplomatic, Research, Last Flagship Standing, Last Capital Standing, and Occupation. More than 60 minutes of new music and countless sound effects and voice overs have also been added, bringing more drama in the game. New and updated tutorials as well as a number of optimizations provide a better experience and game performance than ever before.