Compat Structure
by FixerLink
Compat Structure is a Mobs-category mod that adds generated structures to a world once supported addons are installed, and it requires Compat API.
What it does
Compat Structure combines more than 20 structure addons into one install, so players do not need to add each structure mod separately. When a supported mod is detected in the game, its related structures, dungeons and features are added to the world automatically. Structures follow the themes of the supported mods they belong to, and most of them offer loot, treasure and rare blocks suited to their source.
Compat Structure requires Compat API to run. Fabric, Forge and NeoForge builds are published for 1.20.1 and 1.21.1, and the mod runs on client and server, so both the server and every player need it. The code and data are released under the MIT License, which is not an open source license. Installing the supported mods alongside it brings about 150 structures into the world, and the world stays clean when those mods are absent.
Key features
Combined structure addons
One install brings structures from more than 20 addons, so separate structure mods are not needed.
Automatic detection
When a supported mod is present, its related structures and dungeons are added to the world without setup.
Themed hidden loot
Structures carry themed loot, hidden treasures, secret rooms and rare blocks suited to each source mod.
Puzzle structures
Some builds include puzzle structures, and certain hidden goals give better rewards when solved.
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Requirements
Dependencies declared by the latest file for each loader.
Required 1
Use cases
Who it’s for: Players who use supported structure addons such as Ad Astra and Alex's Caves, and server owners who want those structures in one place.
How it compares
World of Wonders Reforged is a Forge and NeoForge mod for 1.20.1 – 1.21.1 that runs on client and server under the MIT License and is not open source. Simple Structures: Ad Astra targets 1.19 – 1.21.1 on Fabric, Forge and NeoForge, is server required with client optional, and is MIT licensed. Alex's Caves Continued is open source under the GNU Lesser General Public License v3.0 only, runs on client and server, and covers 1.20.1 – 26.3.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Compat Structure | Fabric, Forge and NeoForge | 1.20.1 – 1.21.1 | Client and server | 2026-03-20 |
| World of Wonders Reforged | Forge and NeoForge | 1.20.1 – 1.21.1 | Client and server | 2026-06-30 |
| Simple Structures: Ad Astra | Fabric, Forge and NeoForge | 1.19 – 1.21.1 | Server required, client optional | 2026-09-16 |
| Alex's Caves Continued | Fabric, Forge and NeoForge | 1.20.1 – 26.3 | Client and server | 2026-09-19 |
Questions
Does Compat Structure need Compat API?
Must the server have Compat Structure installed?
Which game versions does Compat Structure support?
Do structures appear without supported mods?
In the catalog
Compat Structure is one of 11,058 Mobs mods on ModsFinder, and one of 5,189 Mobs mods for Fabric. 32,366 mods support Minecraft 1.21.1.
More from FixerLink
Similar mods
What the author says
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!
Official listing
- Modrinth page
- modrinth.com/mod/compat-structure
- Owner
- FixerLink
- Published
- 2025-04-02
- Updated on Modrinth
- 2026-03-20
- Facts verified
- 2026-10-15