Structure World
Sometimes you do not want mountains, oceans, or sprawling biomes. Sometimes you want a clean slate. Structure World is a lightweight mod that strips away all terrain generation and leaves you with a single custom structure floating in an endless void. Whether you are building a skyblock challenge, designing a minigame arena, or setting up a survival island for your server, this add-on gives you total control over what appears at spawn.
What Structure World Does
Once you download Structure World and install it correctly, two new world types appear in the create world screen. Choosing either preset generates a world with no terrain whatsoever, except for the structure placed right at the spawn point. That is the entire premise, and it works beautifully. No chunk noise, no caves, no random trees, just your chosen build sitting in the emptiness.
The mod is available for several Minecraft versions and runs on both Forge and Fabric, so most players on modern releases can use it without hassle. It is also fully server-side compatible, which makes it a strong pick for multiplayer communities.
How to Install Structure World
Installation follows the standard modding routine. Grab the correct file for your Minecraft version and loader, drop it into your mods folder, and launch the game. If you are unsure which build matches your setup, check the mod's documentation before downloading.
- Download Structure World for your exact Minecraft version and mod loader.
- Place the jar file in the .minecraft/mods directory.
- Launch Minecraft with the matching Forge or Fabric profile.
- Open the world creation screen and pick one of the new structure world types.
If you would rather skip the manual file juggling, the foxygame.net launcher handles the whole process for you. It lists Structure World in its built-in add-on catalog, installs it with a single click, and keeps it updated whenever a new build appears.
Adding Your Own Structures
Using the Structure Block
One of the best features here is customization. If you have built something in-game and want it to become a world preset, save it with Minecraft's structure block, then move the resulting nbt file into the structures folder located at .minecraft/config/structureworld/structures. After that, edit the mod's config file at .minecraft/config/structureworld/structureworld.json to register your creation. The default config shows exactly how entries should look, so copying its format is the quickest route.
Custom Dimensions
In newer Minecraft versions, datapacks let anyone create dimensions. Structure World hooks into that system, so your custom dimensions can behave as structure worlds too. You can even run several different structure worlds on the same server without conflicts. The dimension JSON file simply needs to reference the mod's generator, and you are set.
Server-Side Setup and Commands
Running this on a server requires one small tweak. Set the level-type value in server.properties to structure_your_structure_identifier, for example structure_simple_tree or structure_classic_skyblock. If you want the generator to be the default for every world in a modpack, flip the overridingDefault property to true in the config. That forces all newly created client worlds and servers to use your configured type automatically.
Multiplayer servers get a useful command set as well. The /structureworld create command gives each player their own private island. The /structureworld teleport command moves you to a specific player's island, and /structureworld delete removes their access so a fresh one can be generated. Keep in mind that deletion is not reversible, though the original blocks remain in the world.
Final Thoughts
Structure World solves a very specific problem with elegance. It removes the noise of terrain generation and hands you a blank canvas with your chosen build already in place. For skyblock maps, PvP arenas, creative showcases, and custom server experiences, that simplicity is exactly what you need. Install it, point it at a structure, and start building in the void.
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