Based on two major novels by George Griffith (FF II), The Angel of the Revolution and Olga Romanoff.
In The Angel of the Revolution, written in 1893 and set in 1904, the Terror, a socialist and anarchist alliance, uses its flying ships and the opportunities presented by a war between Russia and Britain and her allies to conquer most of the world and bring about a socialist utopia. In Olga Romanoff, written in 1893-4 and set in 2030-37, the last inheritor of the Tsar takes her devastating revenge. Both are lavishly illustrated by Fred T. Jane of Jane's Fighting Ships fame.
Role playing material includes a long worldbook describing the history of the Revolution and its aftermath, the revolutionary base in the African "lost world" of Aeria, the final war and the end of the world. It includes rules for air-ship, war-balloon, and submarine construction and combat, the mysterious Vril force, contact with the higher intelligences of Mars (plus a section describing a campaign fusing elements of FF II and FF VII), and much more. The worldbook also includes war-gaming material by Matthew Hartley (author of many war-games including Aeronef, which was partly inspired by George Griffith's novels)
There are three long adventures and five adventure outlines. By courtesy of Steve Jackson Games there are also four printable sheets of "Cardboard Hero" style figures for the main characters of the novel and soldiers of the Terror and the Tsar.