This is an add-on for Geological Landforms that generates maps with multiple biomes.
Biome Transitions Mod
If you settle on a Temperate Forest world tile that has some Desert adjacent to it, then one side of your map will have some Desert terrain, plants and animals.
Or, if you find a lonely Rainforest tile surrounded by Arid Shrubland, then you will get a nice little jungle area in the middle of your map.
– Plants will grow based on the biome at their position on the map
– Animals will be able wander in from the adjacent biomes
> Can I get more than two biomes on the same map?
Yes, if you settle on a world tile with multiple different biomes adjacent to it. Theoretically you can get up to 7 biomes on one map, but that will be extremely rare to find.
> Can I safely add or remove this mod from existing saves?
It can safely be added at any time, existing colony maps will not be affected, only newly generated ones. Removing is also fine, but any active maps with multiple biomes will revert to only having their main biome for plant and animal spawning.