Board Thread:LotR Mod Technical Support/@comment-29212138-20170118004945/@comment-25101089-20170120040645

Campinator wrote:

LOTRMod wrote: The map image is only a reference for the mod to use when generating new chunks. Does the image on the map have any effect on the way the world generates?

Yes, the image determines which biomes are generated in new chunks, depending on their location. If you've ever seen those Minecraft terrain viewer programs with the coloured biomes that create biome images from your world file... it's basically the reverse of one of those. So by editing it, you could change how the biomes generate in the world (for unexplored chunks). Indeed, this is exactly what I do when I change the map in new updates.