Hi,
I'm wanting to change the world generation by increasing the spawn rate of specific structures, eg end cities and nether fortresses (and more if I choose). Is there a mod that can do this? I scrolled around and found ones that work with custom structures, but not Vanilla ones.

Thanks

bump? :')

Hello, if you want an answer to your question, I have a method for this problem but I'm not using mods 

I just go to the game version file in .minecraft--> versions and choose the one that you are currently playing, then open the jar file inside with winrar and go to data, minecraft, worldgen, structure set and then choose the structure you want to modify and open it (the text file) and follow these instructions: https://minecraft.fandom.com/wiki/Custom_world_generation/structure_set

I really hope it will help you, and it is also the same protocol for mods,

Have a nice day/night and sorry 

when I do this it seems all fine for a moment, but one thing changes. the server.jar file loses about 200kb despite the new structure_set folder being very similar in size to the original. Then, when I run the server (not the client just the server), the jar file resets to the original file with the original structure spawn rates. I don't know how to stop this.