744X
In the 744X system of what we on Earth call the Andromeda galaxy, there is a star not unlike our sun. Surrounding it is a full solar system, gas giants on the outside and rocky planets further in. In the habitable zone, not one, not two, but three planets manage to coexist, locked in orbit with each other and with their shared sun. Over time, three separate civilizations emerge on these planets: the Ervyne on Evnyra; the Karei on Verdax; and the Dauari on Dua Uravasi. Initially developing in isolation, the three societies soon develop spacefaring capabilities, and they frequently come into contact—and conflict.