BLACK SUN V: The Era of Prosperity

The BLACK SUN kindled the Prosperity Era. But we built it. We remember this with pride, even after so much else has been lost. We settled our solar system and filled it with our work. 

To have a sort of primer to expand on what I think is needed before proper play starts:

The time before the End was called the Era of Prosperity. It was centuries-long period in history when the human race achieved a very prosperous existence, having colonized the entire Sol System. The exact length of the Prosperity Era is unknown by the Redoubt. What is known is that humans lived longer, flew further, and knew more. Countless ancient diseases and hatreds were extinguished forever. Human aspiration gave birth to absolutely vast engineering projects, sweeping social movements, and even new forms of life.

When the BLACK SUN was incarnated in the Sol System and began terraforming the different planets and caused the natural onset of MES. Humanity reached out and made first contact. It taught humanity new powers and technologies that lead to the Era. Now that most of the system could support human life and armed with the incredible new technology to reach beyond Earth, vast waves of colonization and expansion began. Many groundbreaking research groups and wide reaching corporations existed during the Era. The Warminds were created and the first life from outside the system, the Shedimai, appeared (more on them later). 

The new discoveries that humanity made were geared towards the colonization of the system and other vital technologies such as SANIS, VI, and medicine. Other technologies, and Earth itself developed more slowly in comparison (in game terms we went from a TL3 society to a TL4+ in a very short period of time). This technology of the Era of Prosperity has not only attracted the attention of human survivors, but also the alien races that now occupy the system. From seeking to loot the Grand Archives of Venus, using the Warminds for vile purposes, to claiming the great Dust Palace of Mars and more. 

The End of the Era was almost a millennia from the present day. Enough time and strife has passed since the BLACK SUN's last stand against the ABYSM that many details about the Prosperity Era and how it ended, such as what, or whom, attacked and exactly how the BLACK SUN saved humanity have been forgotten or have passed into distant legend.