CurseForge · Hytale mod

Custom Instances

Custom Commands to edit, create and save your own Instances

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

Quick answer

Which Custom Instances release should I use?

Updated 6 months ago

Latest stable file CustomInstances-1.0.jar

Game version Not listed

Mod system Built-in Hytale mod system

Custom Instances CustomInstances-1.0.jar targets 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. No required dependencies listed for this file.

Where it goes

Where should Custom Instances 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 Custom Instances CustomInstances-1.0.jar need?

CustomInstances-1.0.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 Custom Instances without breaking your instance.

Built for Custom Instances CustomInstances-1.0.jar. Pick another file and the loader, install side or required mods may change.

01
Stick to this file

Use CustomInstances-1.0.jar. It targets Hytale; another release may target a different game build or dependency set.
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
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.
04
Pick the file you checked

Use the “Get this file” button beside CustomInstances-1.0.jar. It opens that exact file at the source.

About this project

What does Custom Instances add?

By default (as of 17th January 2026) Hytale doesn't allow us to edit instances (it is hardcoded)

This mod allow you to :

Duplicate existing instances in your own Pack
Create totally new Instances
Save your changes on updated Instances

Command list :

/customInstances <InstanceName>

Create a totally new Instance (chose the default worldgen by default but it can be changed in the files)

Can be added into the Pack you chose by using "--pack <packname>"

Can erase already existing instances by using "--force true"

/custominstancescopy <InstanceNameToCopy> <CreatedInstanceName>

Copy an existing Instance from and to a Pack you decide

Can be selected from any Pack by using "--fromPack <packname>"

Can be copied to any Pack by using "--toPack <packname>"

Can erase already existing instances by using "--force true"

/custominstancessave

Instances normally don't save the changes you made to them but with this command you can add blocks to them and then save all changes

Use /custominstancessave --toPack <packname> --name <instancename> --force true

To make this command work, you have to join an existing instance that is NOT in the hytale pack by using the vanilla "/instances" command. Once you joined your instance and made changes, use it to save those changes.

Example Workflow :

Be sure you have a Pack created in the asset editor
Duplicate the existing "Dungeon_Outlander" Instance with command "/custominstancescopy Dungeon_Outlander <MyNewTestInstance> --toPack=<YourCompletePackName>"
This new instance should be seen using the "/instances" command
Join this Instance by selecting it and clicking spawn
Make any changes you desire
Use the command "/custominstancessave --toPack=<YourCompletePackName> --name=<MyNewTestInstance> --force=true"
Use "/instances exit" to leave this instance
Join this Instance by selecting it and clicking spawn after using "/instances" command
You should see the changes you did

Project description from CurseForge.

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