The Borderland line of Third Imperium books focusses on a single subsector within the Trojan Reach, allowing referees to rely on adventures and sourcebooks that fully scope the region, meaning he can get on with the business of running his campaign!

Umemii is a rock ball world in the Borderland Cluster. It is home to several small states, and also the Grand Duchy of Requille whose merchant fleet plies the space lanes throughout the Borderlands. Umemii is a place of contradictions – small states clamour for starships to land at their ports whilst the GrandDuchy discourages visitors. Borderland Profile: Umemii details the world of Umemii and reveals some secrets underlying the commercial success of the Grand Duchy.