Without Structures
by Nighttie
Without Structures lets a modpack author decide where vanilla and modded structures are allowed to generate in the world, by setting the Y levels at which structure generation is permitted.
What it does
Some structures, particularly on worlds with floating islands, generate far below the surface and leave long vertical support columns that reach the bottom of the world. Without Structures addresses this by restricting structure generation to specific Y levels, so structures no longer appear in the lowest layers of the world and stop producing huge pillars under floating terrain.
The mod was first created for Create Aeronautics, where custom floating island terrain from the Skybound mod caused some vanilla structures to generate in places they did not belong. It is a simple utility, aimed at modpacks that need more control over structure generation than the default settings give. It is published for NeoForge only, for 1.21 and 1.21.1, and runs on client and server, so the server and every player need it. The code is not open source and is distributed under All rights reserved.
Without Structures is a required mod for nothing else in the catalog, and it has no dependencies of its own beyond NeoForge.
Key features
Y level restriction
Structure generation can be limited to chosen vertical ranges, keeping structures away from the bottom layers of the world.
Floating island control
Prevents structures from generating under custom floating island terrain, where they would otherwise leave long support columns.
Simple setup
The mod is a utility with a focused purpose, so a pack author can apply the restriction without a large configuration process.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Who it’s for: Modpack authors and server owners who need more control over where structures generate, especially in worlds with floating islands.
How it compares
Limited Structures is server-side only, works on Forge and NeoForge for 1.20.1 – 1.21.1, and is not open source under All rights reserved. Superflat Structures is server-side only, open source under the MIT License, and published for 1.21.1 on NeoForge. Without Structures runs on client and server for 1.21 and 1.21.1, so both sides need it.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Without Structures | NeoForge | 1.21 – 1.21.1 | Client and server | 2026-07-29 |
| Limited Structures | Forge and NeoForge | 1.20.1 – 1.21.1 | Server-side only | 2026-03-08 |
| Superflat Structures | NeoForge | 1.21.1 | Server-side only | 2025-11-13 |
Questions
Does Without Structures need to be installed on the client?
Which loader does Without Structures support?
Why was Without Structures created?
In the catalog
Without Structures is one of 8,515 World generation mods on ModsFinder, and one of 4,175 World generation mods for NeoForge. 32,366 mods support Minecraft 1.21.1.
More from Nighttie
Similar mods
What the author says
Without Structures is a simple utility mod that allows you to control where structures can generate in your world. It also prevents the long vertical support columns that some structures generate all the way down to the bottom of the world, avoiding the huge pillars that often appear in floating island worlds.
Official listing
- Modrinth page
- modrinth.com/mod/without-structures
- Owner
- Nighttie
- Published
- 2026-07-29
- Updated on Modrinth
- 2026-07-29
- Facts verified
- 2026-10-15