Jadepunk

The world in which Kausao City rests has no access to many natural resources, such as crude oil or ingredients to make gunpowder. In their place, refined mystic jade provides power and utility to mechanical devices known as "Jadetech". These devices are responsible for all manner of technology, from the gunslinger's red jade six-shooting pistol to the alchemist's green jade tattoo of protection and airships that don't sail on the sea, but on the very wind itself!

A corrupt governor rules over the internationally-owned Kausao region, discovered a century ago to possess the largest deposits of jade in the world - and the only known location where the rare and powerful black jade can be found. Together with his Council of Nine, the governor rules the city with an iron fist.