Sins of a Solar Empire: Rebellion New Frontier Edition Steam CD Key Platform: Steam Release Date: 05/06/2013 Product Description Includes: Sins of a Solar Empire: Rebellion, Sins of a Solar Empire: Rebellion Forbidden Worlds and Sins of a Solar Empire: Soundtrack. Sins of a Solar Empire: Rebellion While many were hopeful that diplomacy would finally end the war, differing opinions on what should be done, along with the depleted power of the controlling factions, has led to a splintering of th...