Bottom line up front: I wanted something to go along with blackpowder fantasy for Cepheus Engine. This is a perfect fit. Good history of the blackpowder firearm and how it informs the use of such weapons. The rules are light and easy to implement. Equipment includes arquebuses to percussion cap revolvers, petards, and cannons. Short, sweet, to the point. Can't beat the price or the product. Fully recommend.