 The Omega Octant runs from the Void in the Omega Sector through the Psi, Chi and Phi Sectors (though Phi is mostly off the detailed Omega map, as Delta is in the Alpha Octant), and is detailed in a series of "Star Fleet Battles" modules (and a playtest pack for "Federation Commander").Over two dozen empires have operated in this region; some remain a factor in the Octant throughout the modern era, others rise at an early time only to be crushed or sidelined, while still others only enter the scene at a later point in history.Notable powers include the Mæsron Alliance (a union of several species, like the Federation and ISC; its rise, collapse and renaissance helped define the Octant's history), the Trobrin Empire (composed of silicon-based life forms, who consider a 'Silicate Plan' to rule the galaxy as their only insurance against domination by 'carbonites'), the Probr Revolution (a species of genetically uplifted salamanders with an anarchist bent, who rose against their creators, then used their technology to forge their own empire), the Drex Unity (A civilization of artificial intelligence who dedicate themselves by defend their creator's homeworlds against any threat), the Sigvirion Expansion (a species of living viruses that take over and use other species as their hosts), and the Federal Republic of Aurora (a collection of exiles from several Alpha Octant empires, involuntarily transferred to the Omega Octant and forced to find their own way amidst the warring factions of Omega).