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Open Structure project artwork

CurseForge · Hytale mod

Open Structure

OpenStructures is an open worldgen structure hub for Hytale spawn/paste engine, admin tools, and a public API so other mods can ship structure packs.

Choose a version Pick your version below, then grab the matching file.

Quick answer

Which Open Structure release should I use?

Updated 2 days ago
Latest stable file OpenStructures-0.1.2.jar
Game version 0.6
Mod system Built-in Hytale mod system

Open Structure OpenStructures-0.1.2.jar targets 0.6. Do not install it as a separate client mod. Enable it on the world host—the local server in singleplayer or the dedicated server in multiplayer. No required dependencies listed for this file.

Where it goes

Where should Open Structure be installed in Hytale?

Do not install it as a separate client mod. Enable it on the world host—the local server in singleplayer or the dedicated server in multiplayer.

Separate client mod Not supported
World host / dedicated server Required
Mod system for this release Built-in Hytale mod system
Required install it here Optional supported, not mandatory Not supported do not install here Source doesn’t say do not assume

Put Hytale mods on the world host or dedicated server. Singleplayer runs a local server too; Hytale does not use separate client mods.

Read the Hytale installation guide

What else does Open Structure OpenStructures-0.1.2.jar need?

OpenStructures-0.1.2.jar. Change the file and its required mods may change too.

No required dependencies listed for this file

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 project dependencies. Check the creator notes before changing an existing world.

Before you install it

Add Open Structure without breaking your instance.

Built for Open Structure OpenStructures-0.1.2.jar. Pick another file and the loader, install side or required mods may change.

  1. 01

    Stick to this file

    Use OpenStructures-0.1.2.jar. It targets 0.6; another release may target a different game build or dependency set.

  2. 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.

  3. 03

    Enable it on the world host

    Do not install it as a separate client mod. Enable it on the world host—the local server in singleplayer or the dedicated server in multiplayer.

  4. 04

    Pick the file you checked

    Use the “Get this file” button beside OpenStructures-0.1.2.jar. It opens that exact file at the source.

About this project

What does Open Structure add?

OpenStructures is an open worldgen structure hub. It places structures from pack spawn rules on newly generated chunks, and exposes a paste engine, admin UI, and public API for other mods.

This mod does not ship a fixed structure catalog. Content packs (and creators) add their own prefabs and rules under Server/WorldGen/OpenStructures/Prefabs/. Legacy StructureV2 rule packs under Server/WorldGen/StructureV2/Prefabs are still scanned during migration.

Note: Structures only generate in new or unexplored chunks. Existing terrain will not be updated.

What's new in 0.1.0

  • Structure hub — shared worldgen placement, prefab paste fidelity, and spawn-rule loading for OpenStructures packs
  • Admin panel (/os admin) for spawn rules, worldgen options, and per-entry overrides
  • Creator tools — in-game Guide, /os validate, /os why, and /os status to debug placement
  • Public API — other mods can depend on OpenStructures for spawn rules, paste, and events

For creators

Before you add structures, read both:

  • In-game Guide — open /os admin and open the Guide tab (schema, Pattern / GridGenerator, paths, common mistakes)

Then ship spawn rules as JSON under:

  • Server/WorldGen/OpenStructures/Prefabs/*.json

Use Pattern with a top-level GridGenerator, point prefabs at Server/Prefabs/, and verify with /os validate and /os why <entryId>.

Compatibility

OpenStructures works on its own as the structure hub. Optional integrations:

  • Content packs — any pack that ships OpenStructures (or legacy StructureV2) spawn-rule JSON.

Not a drop-in replacement for StructureV2 content: StructureV2 remains a separate structure pack with its own prefabs and boss island. OpenStructures is the shared hub + API; keep StructureV2 if you want that content, or migrate rules to the OpenStructures path.

Commands

Permission: openstructures.admin · aliases: /os, /openstructures

  • /os admin — open the admin panel
  • /os status — worldgen status and counts
  • /os why [entryId] — diagnose why nothing places at your feet
  • /os reload — reload spawn rules
  • /os list [world] — list spawn records
  • /os tp <index> — teleport to a spawn from the list
  • /os spawn <prefab> — paste a prefab at your position (e.g. Structure.Camp)
  • /os entries — list loaded spawn rule entries
  • /os validate — check prefab resolution and Pattern compile
  • /os nearby [radius] — show nearby spawn records
  • /os flush — force-save spawn data
  • /os clear — clear spawn records for the current world

Install tip: After updating the jar, fully restart the world. Do not replace the jar while Hytale is running.

Feedback: Found a bug or have a suggestion? Leave a comment or contact joszza on Discord for a faster response.

Project description from CurseForge.

Pick your setup

Open Structure releases for each Hytale build.

Choose the version and loader you play, then open the matching release.

1 available setups

Check the dependencies, then try the file in a copied instance before changing a world you care about.

Recent files

Open Structure releases and Hytale builds

3 of 3 releases match

Looking for an older file? The official CurseForge project page is in Resources.

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