Thanks for the tip. I have looked at a few different mods that alter the terrain. Many seem to write their own noise function in lua and then overwrite on_chunk_generated with their custom code. I would like to avoid having to do my own noise functions.
I wasn't able to understand how Alien Biomes ...

Hi. I´m making a mod and need to customize the map generation (for something like a world map in an rpg).
I read up some on NoiseExpression, and on perlin noise functions.
https://wiki.factorio.com/Types/NoiseExpression

My instinctive plan was to define some noise layers, for example "myElevation ...

I played the game for over a year now, and I always play with biters.
I feel the games needs the challange, there has to be a way to theoretically lose.

I like the new combat rebalance, although I have not yet got all the new stuff in my death world.

Problem: I feel like biters lategame become ...