'Sins of a Solar Empire: Rebellion will add many new ships, refresh the visuals and integrate Impulse::Reactor features to support achievements, multiplayer leagues and much more.' 'Rebellion is the first stand-alone expansion to the Sins of a Solar Empire universe,' said Stardock's director of publishing Brian Clair. It features new factions, new ships, enhanced graphics and new victory conditions. Stardock has announced Rebellion, a stand-alone expansion to PC game Sins of a Solar Empire.