Terrainasaurus is a simple script I wrote to modify terrain by using the vertex colors of a mesh. The tutorial is on my wordpress blog, and contains images and steps on hoe to use it. The script makes use of libnew() and I also show you fast and clean ways to color the vertices in vertex paint mode. Here is the blend file so you can better see the script and play with it. It is partially based upon other terrain modifiers here, but it is much simpler to use, hopefully it helps someone.
Modified the polygons of terrain in game engine this? Thanks 