Traditionally, the facade of computer graphics has been one of cleanliness: reflective plastic, smooth surfaces, and even textures. While such images are efficient to construct using modern tools and software, their realism is degraded by such even detail [Becket and Badler 1990]. Contemporary high-end graphics which achieve unprecedented levels of realism overcome such limitations at the enormous expense of the meticulous labor of adding the details of age on an object by object basis by a team of artists. We propose a system to proceduralize the simulation of "age" on entire 3D environments, providing high level controls over trash spread, vine growth, dust, dirt, rust, and chipped paint, etc. to the user, thus reducing the costs of achieving such effects.