From the back cover: Master the forces of steam and steel. The Liber Mechanika is your handbook to the arcane art of mechanikal artifice and steam-foolery in the Iron Kingdoms. This game supplement adds further detail to the fusion of magic and mechanical science to produce inventions of spectacular and wondrous power. Within awaits a series of wonders ready to be revealed to the inquiring and inventive minds of players and game masters alike. Find within this guide: A revisited and revised arcane mechanik base class. Four prestige classes unique to the Iron Kingdoms, including field mechanik and ironhead. Details on the arcane science of Cyriss-tech. Streamlined rules for mechanika creation. Rules and options for building steamjacks - the construct servants and warriors of the Iron Kingdoms. This product is compatible with the 3rd edition and the revised 3rd edition rules under the open gaming license.