CurseForge · Minecraft mod
Castle in the Sky
This mod adds new structure: Castle in the Sky in your world
Quick answer
Which Castle in the Sky release should I use?
Castle in the Sky castle_in_the_sky-1.21.1.1.jar targets 1.21.1 with 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 Castle in the Sky 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 Castle in the Sky castle_in_the_sky-1.21.1.1.jar need?
castle_in_the_sky-1.21.1.1.jar. 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 Castle in the Sky without breaking your instance.
Built for Castle in the Sky castle_in_the_sky-1.21.1.1.jar. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use castle_in_the_sky-1.21.1.1.jar. It targets 1.21.1 with 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 castle_in_the_sky-1.21.1.1.jar. It opens that exact file at the source.
About this project
What does Castle in the Sky add?
This mod adds Castle in the Sky into your world:
Updates in 1.19.2 (mod version 0.5.1+):
Default trading recipe of the levitation stone is more expensive now (you can still configure it if you want it to be less expensive)
The incomplete generation issue in 1.18 version seems to be fixed.
Pictures:



Destroyed castle (1.18.1+ only)

More see Images
Videos:
How to find them?
Get a levitation stone by trading with a Cartographer (Master level);
Right click the levitation stone;
Follow the cloud (you may travel tens of thousands of blocks, so be patient and prepared).
How to conquer the castle?
- Enter the dungeon:
2. Defeat mobs, solve redstone puzzles and find the room with Levitation Crystal:
3. Turn off the level next to it. You can break blocks now.
- To receive the advancement, you need to walk on the crystal.
Tips:
You can use levitation stone to float upwards in the castle.
Keys are usually in the treasure chests, but you can kill mobs to obtain keys as well.
You may spend 1-2 hours in the dungeon. If you get lost, create a test world in creative world.
Destruction incantation (1.18.1+ only)
Type the incantation to the chat when holding a levitation stone near a levitation crystal to activate the incantation.
You can use one of the incantations (let me know if you want to add your speaking language):
"BARUSU", "BALSE", "BALUS", "バルス", "巴鲁斯"
Details:
The castle is only generated in the ocean biomes in the overworld.
The minimum distance between the castles and world spawn is 10000 blocks (configurable), which means you will travel at least 10000 blocks before finding one.
The castles spawns averagely 8000 blocks (configurable) apart with 4800 blocks (configurable) minimum distance.
You cannot place or break block until you disable the crystal of the castle after walking through the dungeon.
Yellow, Blue and Red keys are required to lock corresponding doors in the dungeon. They are dropped by killing mobs in the castle (30%, 10%, 2% drop rates, configurable)
Keys and excellent treasures can be found in the dungeon as well, you might need to solve puzzles or kill hard mobs to obtain them.
The levitation stone gives you levitation effect when near the castle.
The levitation crystal gives nearby players (within 100 blocks, configurable) effect to prevent them from placing and breaking blocks. The effect can be disabled in config file as well.

The castle was inspired by Hayao Miyazaki's animated film Laputa: Castle in the Sky.
Fun fact: The iron golem's holding out flowers to villagers is a referenceto the ancient robots in the movie as well.
List of configurable features for modpack makers:
Castle Spawn:
height
minimum distance
rarity(As of 1.18.2, you can no longer edit it in config file, since it is now defined in the structure_setfiles.)
Recipes:
- levitation stone trading: items and numbers, the level to unlock trading, the profession of the villager. (Note: you can use items and villager profession from other mods as well)
Game mechanic:
Disable "Sacred Castle" effect
Effect range of the crystal that prevents you from breaking/placing blocks
Keys drop rate
Disable castle destruction
The minimum number of blocks from spawn before you can use the levitation stone
FAQ
- Can I use this mod in my mod pack?
Yes.
- Can I use this mod in my videos?
Yes if you put the link in the description.
- Can I find a second castle?
Yes, there are (in theory) infinite castles despite the fact they are extremely rare. To find a new one: deactivate the stone by right click once; fly far away from existing castles; re-activate the stone by right click once.
Credits
Item/Block models made with Blockbench.
Structure generation following this tutorial.
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Project description from CurseForge.
Pick your setup
Castle in the Sky by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
1.21.11
1 loader build1.21.1
1 loader build1.20.1
2 loader builds1.19.4
1 loader build1.19.2
1 loader build1.18.2
1 loader build1.18.1
1 loader build1.18
1 loader build1.17.1
1 loader build1.16.5
1 loader buildCheck the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
Castle in the Sky versions and loaders
castle_in_the_sky-1.21.1.1.jar
5 Jun 2026
castle_in_the_sky-1.21.11.1.jar
1 Jun 2026
castle_in_the_sky-26.1.2.1.jar
30 May 2026
castle_in_the_sky-1.20.1-0.6.0.jar
16 Jan 2024
castle_in_the_sky-1.19.4-0.5.3.jar
30 Jul 2023
castle_in_the_sky-1.19.2-0.5.2.jar
25 Sept 2022
castle_in_the_sky-1.19.2-0.5.1.jar
27 Aug 2022
castle_in_the_sky-1.18.2-0.4.1.jar
3 Apr 2022
castle_in_the_sky-1.18.1-0.4.0.jar
29 Jan 2022
castle_in_the_sky-1.18.1-0.3.2.jar
19 Jan 2022
castle_in_the_sky-1.18.1-0.3.1.jar
17 Jan 2022
castle_in_the_sky-1.18.1-0.3.0.jar
15 Jan 2022
Looking for an older file? The official CurseForge project page is in Resources.