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Modrinth · Minecraft mod
Compat Structure
Adds structures to popular mods. Create, Alex's Caves, Ice and Fire and etc.
Choose a version Pick your version below, then grab the matching file.
Quick answer
Which Compat Structure release should I use?
Latest stable file 1.0.3
Game version 1.21.1
Loader Fabric
Compat Structure 1.0.3 targets 1.21.1 with Fabric. Installation on the client is optional. Installation on the dedicated server is optional. No extra mods listed for this file.
Where it goes
Is Compat Structure required on the client, server, or both?
Installation on the client is optional. Installation on the dedicated server is optional.
Client Optional
Dedicated server Optional
Loader for this release Fabric
Required install it here Optional supported, not mandatory Not supported do not install here Source doesn’t say do not assume
The source marks this as usable on both the client and server.
What else does Compat Structure 1.0.3 need?
1.0.3. Change the file and its required mods may change too.
This file does not list any required mods. Do not add a library just because a different file uses it.
This file does not list any required or optional mods.
Before you install it
Add Compat Structure without breaking your instance.
Built for Compat Structure 1.0.3. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use 1.0.3. It targets 1.21.1 with Fabric; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
This file does not list any required mods. Do not add a library just because a different file uses it.
- 03
Put it on the correct side
Installation on the client is optional. Installation on the dedicated server is optional.
- 04
Pick the file you checked
Use the “Get this file” button beside 1.0.3. It opens that exact file at the source.
About this project
What does Compat Structure add?
📖 About
Compat Structure combines 20+ structure addons into one easy-to-use mod.
Most structures have their own style, themed loot, hidden treasures, secret rooms, or rare blocks.
Instead of installing a bunch of separate structure mods, just drop in Compat Structure — and start exploring!
📃 Features
- Mod Style: Structures match the theme of each supported mod.
- Hidden Loot: Secret rooms and rare treasures are tucked away.
- Mystery Elements: Some builds have hidden goals — solve them for better rewards.
📝 Description
How it works:
You install Compat Structure — and let the world handle the rest.
If a supported mod is detected, related structures, dungeons, and features are added into your world.
If not — your world stays clean.
📋 List of Supported Mods
Spoiler
Compat Structure adds structures for the following mods (only if installed):
Ad Astra
Adds 5 structures, with hidden loot. Structures will be spawned on Mars, the Moon, Overworld.
Adds puzzle structures: Moon Station
Applied Energistics 2
Adds a few structures, with rare blocks. Structures will be spawned on Overworld.
Aether
Adds 15 structures, with themed loot. Structures will be spawned on Aether, Overworld.
Adds puzzle structures: Aether Gate
Structure Redesign:
Alex’s Caves
Adds 5 structures, with hidden loot and mystery elements. Structures will be spawned Alex's Caves.
Adds puzzle structures: Uranium Mine
Alex’s Mobs
Adds 5 structures, with themed loot. Structures will be spawned on Overworld.
Adds puzzle structures: Large Zoo
Structure Redesign:
Ars Nouveau
Adds 12 structures, with hidden loot and themed loot. Structures will be spawned on Overworld.
Adds puzzle structures: Free Mutant Tree
Structure Redesign:
Artifacts
Adds 5 structures, with hidden loot. Structures will be spawned on Nether, The End, Overworld.
Adds puzzle structures: Catacombs
Structure Redesign:
Biomes O’ Plenty
Adds 5 structures, with mystery elements. Structures will be spawned on Nether and Overworld.
Adds puzzle structures: Museum
Structure Redesign:
Oh The Biomes We’ve Gone
Adds 3 structures, with mystery elements. Structures will be spawned on Overworld.
Botania
Adds 5 structures, with hidden loot. Structures will be spawned on Overworld.
Create
Adds 40+ structures, with hidden loot, rare blocks and mystery elements. Structures will be spawned on Overworld.
Epic Fight
Adds structure, with mystery elements. Structures will be spawned Overworld.
Ice and Fire
Adds 30+ structures, with hidden loot, themed loot and mystery elements. Structures will be spawned on Overworld.
Adds puzzle structures: Volcano
Structure Redesign:
Immersive Engineering
Adds a few structures, with themed loot. Structures will be spawned Overworld.
Iron’s Spells & Spellbooks
Adds 5 structures, with hidden loot and mystery elements. Structures will be spawned Overworld.
Adds puzzle structures: Magic Swamp Village
Structure Redesign:
Mowzie’s Mobs
Adds 3 structures, with hidden loot. Structures will be spawned on Overworld.
Structure Redesign:
Naturalist
Adds 5 structures, with themed loot. Structures will be spawned on Overworld.
Quark
Adds 5 structures, with hidden loot and mystery elements. Structures will be spawned on Overworld.
Adds puzzle structures: Market
Structure Redesign:
Tinkers’ Construct
Adds 5 structures, with hidden loot and themed loot. Structures will be spawned on Overworld.
Twilight Forest
Adds 5 structures, with hidden loot and mystery elements. Structures will be spawned on Twilight Forest.
🎁 Bonus Info
If you install all supported mods, you’ll unlock ~150 structures.
🧾 Credits
Some of the original addons were distributed under the MIT License, which allows their content to be legally used in this mod.
In addition, all necessary permissions from the original creators have been obtained.
The current version is released under the MIT License, even though many changes were made to the data files and code.
Drop your feedback, thx!
Project description from Modrinth.
Pick your setup
Compat Structure by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
Minecraft version
1.20.1
2 loader buildsCheck the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
Compat Structure versions and loaders
1.0.3
compatstructures-1.0.3.jar
20 Mar 2026
Client Optional Server Optional Dependencies No extras listed Listed on Release listing
Check the 1.21.1 · Fabric setup 1.21.1Fabric release
1.0.3
compatstructures-1.0.3.jar
17 Mar 2026
Client Optional Server Optional Dependencies No extras listed Listed on Release listing
Check the 1.20.1 · Fabric setup 1.20.1Fabric release
1.0.3
compatstructures-1.0.3.jar
16 Mar 2026
Client Optional Server Optional Dependencies No extras listed Listed on Release listing
Check the 1.21.1 · NeoForge setup 1.21.1NeoForge release
1.0.3
compatstructures-1.0.3.jar
15 Mar 2026
Client Optional Server Optional Dependencies 1 required · 1 unchecked Listed on Release listing
Check the 1.20.1 · Forge setup 1.20.1Forge release
1.0.2
compatstructures-1.0.2.jar
19 Sept 2025
Client Optional Server Optional Dependencies No extras listed Listed on Release listing
Check the 1.21.1 · NeoForge setup 1.21.1NeoForge release
1.0.2
compatstructures-1.0.2.jar
14 Sept 2025
Client Optional Server Optional Dependencies No extras listed Listed on Release listing
Check the 1.20.1 · Forge setup 1.20.1Forge release
1.0.1
compatstructures-1.0.1.jar
13 Apr 2025
Client Optional Server Optional Dependencies No extras listed Listed on Release listing
Check the 1.20.1 · Forge setup 1.20.1Forge release
1.0.0
compatstructures-1.0.0.jar
2 Apr 2025
Client Optional Server Optional Dependencies No extras listed Listed on Release listing
Check the 1.20.1 · Forge setup 1.20.1Forge release
Looking for an older file? The official Modrinth project page is in Resources.
