ITG procedurally generates any terrain around the player. It’s comprehensive set of options allows you, the developer, absolute control over every aspect of the generated terrain. Want your character to run around in the mountains? A waterworld? Mars? An alien jungle? It is all possible with ITG. When the Object Map and Texture map are used together they create a power full tool that allows you to create biomes throughout the map.
The models & textures included are examples, if you wish to use your own ... these options are also included.
You can find the manual for ITG here.
1.01 inlcudes extra examples (how to create 2 different kind of biome maps).