Xo I was the adopted homeworld of the Zanibar, a species of tall, spindly humanoids whose religion demanded the frequent sacrifice of sentient beings as an offering to the gods. The depredations of this race eventually led to their extirpation by splinter forces of the defunct Galactic Republic as well as a number of corporations. These forces colonised the world and eventually joined into one umbrella corporation that now unites the three planets of the Xo system. While the unified government has resulted in peace and stability for the system, there has been a ruinous cost to the environment.

Prior to the system conquest and genocide against the Zanibar, Xo I was a cool, wet world with huge tracts of forests, jungles, and swamps, with permanent glacier fields covering the eastern and western poles. Due to the solar system’s vertical alignment, the planet rotates on its magnetic east-west axis, rather than the more typical north-south axis. This could lead to some confusion for non-natives, but Xo I’s not mostly extinct wildlife did not have any issues. This wildlife had been adapted to eat the broad variety of tough, thorny plants that once covered the surface, growing as large as thirty meters in height in the forests and jungles. Even Xo I’s small areas of desert played host to a variety of spiny plants. Most of the plant and animal life has since been lost to industrialization.

A planet-spanning ecumenopolis now enshrouds the planet surface, excepting small areas of the deepest underground cave system and the volcanic lava fields in the northeast. Vast automated factories cover large areas of the planet, turning extracted raw materials into manufactured goods for export. These goods are transported and sold all over the Outer Rim, helping to ease the lives of peoples who live far from the civilisation of the Core Worlds. More recently, government and non-governmental organisations have embarked on a number of campaigns to clean up the environment, but there is simply no returning the planet to what it once was.