Empyrrean is a sparkling Temperate world covered in thick prairies and open forests. It is the homeworld of the ARM Rebellion, one of the two factions and it reflects the retainment of nature that the ARM sought in its rebellion against the CORE Empire. Empyrrean itself is covered from pole to pole in wide oceans and long, thin continents. It has no deserts and a small polar region. It can only be assumed that the massive oceans that cover Empyrrean are somehow accountable for this.