Hello, I've been trying for a few days to know how to add custom structures in the generate process when Minecraft creates a world without another plugin (WorldEdit...). So far I explored a lot of websites and thread talking about this, but it was either outdated, either not working, either not well explicated. I searched for converting NBT or SCHEM files into String, but it seems it was pretty much impossible because of the compression (maybe I haven't search enough). Then I searched on how to use a NBT or SCHEM file to add in the default structure list of Minecraft, with no sucess... I found these posts: https://bukkit.gamepedia.com/Developing_a_World_Generator_Plugin https://tutorials.darkhax.net/tutorials/structure_gen/ https://www.spigotmc.org/threads/1-13-x-nms-code-need-help-with-custom-generator.366584/ But I couldn't use them to do what I want. After all those search, I decided to change to generate a structure not when the world is created, but when the chunk is loaded. But here again, I can't find how to generate the structure... Just that it will happen in a ChunkLoadEvent. Thanks for reading the post, and thanks for your help!