The Orion Sphere is littered with the relics and ruins of bygone civilisations. Although these remnants are relatively common, the vast majority are nothing more than a few scattered ruins, long emptied of technology or any trace of the society that created them. Precursor remains can be thousands or even millions of years old, and a rare few contain lost secrets or troves of artifacts.

Although these remnants bear silent witness to countless species and empires across time, no known extant species developed spaceflight more than ten thousand years ago.