Impulse is Stardock's equivalent of Steam, learn more about it here ->http://www.impulsedriven.com/about.aspx
Sins of a Solar Empire is an innovative real-time strategy game featuring seamless transition between epic strategy and tactical combat modes, initiating what is already becoming known as the RT4X sub-genre. A galaxy of intriguing aliens, powerful starships, and colossal planets comes to life with stunning 3D graphics, unparalleled sense of scale, and a cinematic musical score. Explore and conquer nearby planets and distant solar systems by applying brute force, cunning strategy, elegant diplomacy, economic mastery, and researched technology.
Entrenchment is the first micro-expansion for Sins of a Solar Empire, adding new structures, new technologies, and numerous other improvements to one of the most popular and award winning PC titles of 2008.
Explore entirely new strategies with new units like starbases, mine layers, and defense busters and brand new research technologies to customize and improve them. Each race relies more on their unique strengths than ever before, resulting in new defensive options and the necessary evolution of new offensive strategies.