From the publisher "The Mars Planetbook is a Jovian Chronicles resource for the Martian Federation and Free Republic, two nations locked so deeply in an ideological struggle of freedom versus security that their war will never end until one of them perishes.
Within these covers you will find:
* An overview of both Federate and Republican culture and society;
* Descriptions of five Martian settings;
* Tips on creating adventures in Martian space, plus four introductory scenarios;
* Details on the Martian environment, including the hellish dust storms;
* New equipment, vehicles and weapons of war.