From the introduction: Make no mistake, the document before you has very little to do with guns – it does however have a lot to do with firepower and flashy effects, for "Big Guns" refers to magickal powers, psionic effects, and fantastic technology. Presented within is a simple system for creating powers and abilities, along with suggestions as to how to implement them in your game. Big Guns is a perfect supplement for fantasy, sci-fi, and superheroic games.