I'm one of the rare Traveller Referees here on Roll20. It's the Classic Hard Sci Fi game, I'd be running the edition by Mongoose Press. The Setting is called "Edge of the Abyss" 50 years ago, a sporadic series of Wars of Succession began, in and
between different Sectors across charted space, as what had long ago
been the Terran Empire continued its inexorable, painfully slow decline,
due to Internal political struggles, intrigue, palace revolts,
planetary rebellions, interstellar trade wars, and House on House
rivalries.
After exploring the Galaxy for centuries, The Abyss is a star desert, and as far
as Humanity can go, to Spinward. Now facing their own eventual
limitations to expansion, there is a slow but steady concern among the
different Interstellar nations that exist, regarding the development of
the remaining worlds and resources, with an eye to future survival. It is now the Year 5440, and this is life at the Edge of the Abyss.