System Guide 2 is part of Avenger Enterprises' "Marches 1110" series, and is a companion to the Bowman Arm sourcebook. It details a complete star system lying on the Bowman Arm, a frontier region troubled by the aftermath of the Fifth Frontier War.

Settled by Darrian colonists, Flexos is a desert world with a sparse population dwelling on the shores of its small seas. Its desert highlands remain largely unexplored, and there are rumors of lush oases hidden in deep canyons far from civilization.

Flexos is now home to a mixed culture of Aslan and humans, but as the colonists discovered, someone lived there first. Struggling to wrest a living from the soil of their new home, the people of Flexos have never made a complete study of the ruins left by their ancient precursors. Only offworlders have the equipment and the spare time to undertake an investigation. Who knows what they might find in the great underground city of Flexos?

This stat-free book can be used with any version of Traveller.