Supercivilizations

"Supercivilization" is a term applied to any civilization which controls ninety percent of a Galaxy or more. Examples of supercivilizations include the Old Race or the Primarchs. The term can also be applied to any species with technology that can apparently defy known rules of physics. Races fulfilling this criteria include the Megatans and Species-37.

Supercivilizations in the past have been prone to a cataclysmic rise-and-fall pattern called "The Cycle". For as long as anyone can tell, a Galaxy only ever contained one supercivilization at a time. The Primarchs, for instance, rose up from a single world until they had conquered the entire Galaxy. If other races existed in the same time period, they were likely destroyed or assimilated by the Primarchs, or simply died off from a lack of resources. Without an apparent cause, the Primarchs began to recede, and the Old Race rose to power. In the waning days of the Primarchs, the Old Race had assumed the mantle of superiority as well as the title of supercivilization, by taking the Primarch's old territory and making it their own.

Due to the implementation of the Gatekeepers and the Old Race's drive to break The Cycle, there are currently no known supercivilizations active in the Galaxy at this time. There are close candidates - the Rhurni and the Alinteans both qualify. The Megatans, if they still exist, are also a strong candidate after their creation of the Megata Object.