Super Powers of Mass Destruction

"Game of Thrones meets the X-men in this modern day fantasy!" The superheroes have taken over the world. Tired of the corrupt politicians using them like weapons, they carved up the globe into domains that only the most powerful among them could control. They sit upon thrones and rule over those without powers. They create laws that ensure their empire will continue forever. They breed heirs that possess more powerful abilities with every generation that is born. But even though they may act like gods, they are not infallible. Greed and jealousy and corruption run through their veins as well. And when the most powerful among them falls dead, the cracks in the empire widen, threatening everything they've built. Some will do whatever it takes to hang onto their control of the world. And some will do whatever it takes to tear the whole thing apart.