CurseForge · Minecraft mod
Just Another Structure Pack
Adds new structures throughout the Overworld.
Quick answer
Which Just Another Structure Pack release matches 1.21.6 Forge?
Just Another Structure Pack v2.3 targets 1.21.6 with Fabric, Forge, NeoForge. The project page does not say whether this file belongs on the client, dedicated server, or both. No extra mods listed for this file.
Where it goes
Is Just Another Structure Pack required on the client, server, or both?
The project page does not say whether this file belongs on the client, dedicated server, or both.
The source does not explicitly classify this release as client-only or server-only.
What else does Just Another Structure Pack v2.3 need?
Just Another Structure Pack v2.3 on 1.21.6 Forge. Every mod below is checked against that same setup.
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 Just Another Structure Pack without breaking your instance.
Built for Just Another Structure Pack v2.3 on 1.21.6 Forge. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use Just Another Structure Pack v2.3. It targets 1.21.6 with Fabric, Forge, NeoForge; 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
The project page does not say whether this file belongs on the client, dedicated server, or both.
- 04
Pick the file you checked
Use the “Get this file” button beside Just Another Structure Pack v2.3. It opens that exact file at the source.
About this project
What does Just Another Structure Pack add?
Just Another Structure Pack is a structure data pack that adds new structures to the Overworld. The various structures are designed to seamlessly integrate into vanilla gameplay and add variation and reward to exploration.
From small ruins to long lost labyrinths, Just Another Structure Pack offers a variety of structures for your worlds.
Structures include:
Catacombs:
These ominous structures spawn rarely in Taigas. The consist of a long entrance shaft and then a maze of twisting pathways. Contains lots of skeletons.
Bastion Outpost:
This mysterious underground structure contains many Illagers including Illusioners.
Friendly Outpost:
Rare structures that contains villagers and early game loot. Spawn in most biomes.
Illager Ship:
Find illagers aboard a ship in most ocean biomes.
Towers:
Towers generate uncommonly in the world and act as waypoints. Contains loot with helpful exploration resources, and always contain a compass and lodestone.
Rustic Church:
Small, ambient structure that spawns in forest biomes. Has a chance to spawn as a ruined variant.
Overgrown Library:
Small structure that spawns in Lush Caves. A good source of enchanted books and bookshelves.
Ambients:
Small ruins found in deserts and forests, with more biomes planned for the future
And more:
There are more structures to find than the ones listed here, so go exploring!
Project description from CurseForge.
Pick your setup
Just Another Structure Pack by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
1.21.10
4 loader builds1.21.9
4 loader builds1.21.6
4 loader builds1.21.5
4 loader builds1.21
3 loader builds1.20.1
2 loader builds1.20
2 loader buildsCheck the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
Just Another Structure Pack versions and loaders
Just Another Structure Pack v2.3
just-another-structure-pack-2.3.jar
2 Aug 2026
Looking for an older file? The official CurseForge project page is in Resources.