Shattered Fortress is one of two sourcebooks/scenario books that details the last years of the Dark Age Era (From 3146 to 3150). The events which are covered is the invasion of the Republic of the Sphere's Fortress Walls into Prefecture X and highlights other major events occuring across the Inner Sphere. Included among its rules are other gaming enhancements allowing play in Total Warfare Game Rules, A Time of War RPG & Alpha Strike. Featured in the back of this book are mini-campaigns for various events during this Era using the Chaos Campaign Rules/Warchest Point System. In this book, it discuses the possible methods that made the Fortress Walls and HPG Blackout possible. From the Publisher: REPUBLIC IN FLAMES! In 3146, the Republic of the Sphere hangs by a tenuous thread. The last fragments of Devlin Stone’s dream to shepherd humankind toward a more prosperous future hide behind the impenetrable defenses of Fortress Republic. As the interstellar communications blackout rages, the ambitious Great Houses vie for military dominance, and the bloodthirsty Clans strive to find a weakness in the Fortress’s armor on their path to conquering Terra and claiming the coveted title of ilClan. When the Wall comes down, will the Inner Sphere plunge even further into the abyss of interstellar war, or will this herald the dawning of a new age? Shattered Fortress chronicles the twilight of BattleTech’s Dark Age, as nations are thrown into turmoil and predators circle the broken remnants of the Republic of the Sphere. This volume provides a year-by-year look at pivotal turning points in Inner Sphere, offers a peek behind the curtain of Fortress Republic, and reveals the fateful decisions that will ultimately decide the future of the Inner Sphere.