MojoWorld was a commercial, fractal-based modelling program for the creation of digital landscapes. Marketed by Pandromeda Inc., it was originally created by Ken Musgrave. MojoWorld could generate entire planets through mathematics using a simple interface which could then be navigated and a particular scene edited and rendered. The final release was MojoWorld 3.1.1 from October 2005, featuring procedural forest generation, boulders, and rocks.
References
MojoWorld Generator Wikipedia(Text) CC BY-SA