Apparance is a procedural generation plug-in designed to allow the interactive visual authoring of detailed and expansive 3D worlds. A play-space for procedural logic and their use in the generation of environments and objects. A fusion of programming and modelling that gives extensive control over your applications procedural elements. The Apparance project is inspired by the flexibility of non-linear and node-based editing systems used in film, television, and games. The amazing compression achieved by the demo-scene using mathematics and procedural generation points towards the vast possibilities of large scale procedurally built game worlds.