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Lost Sky Islands project artwork

Modrinth · Minecraft mod

Lost Sky Islands

A datapack (packaged as a mod) that adds clusters of sky islands with ruins from some lost civilization to your Minecraft worlds.

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

Quick answer

Which Lost Sky Islands release matches 26.1.1?

Updated 9 days ago
Best match for your filters 1.0.1
Game version 1.21.9, 1.21.10, 1.21.11
Loader datapack

Lost Sky Islands 1.0.1 targets 1.21.9, 1.21.10, 1.21.11 with datapack. Installation on the client is optional. Installation on the dedicated server is optional. No extra mods listed for this file.

Where it goes

Is Lost Sky Islands required on the client, server, or both?

Installation on the client is optional. Installation on the dedicated server is optional.

Client Optional
Dedicated server Optional
Loader for this release datapack
Required install it here Optional supported, not mandatory Not supported do not install here Source doesn’t say do not assume

The source marks this as usable on both the client and server.

Understand client and server requirements Read the Minecraft installation guide

What else does Lost Sky Islands 1.0.1 need?

1.0.1 on 26.1.1. Every mod below is checked against that same setup.

No extra mods 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 mods.

Before you install it

Add Lost Sky Islands without breaking your instance.

Built for Lost Sky Islands 1.0.1 on 26.1.1. Pick another file and the loader, install side or required mods may change.

  1. 01

    Stick to this file

    Use 1.0.1. It targets 1.21.9, 1.21.10, 1.21.11 with datapack; another release may have different loader, side or dependency requirements.

  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

    Put it on the correct side

    Installation on the client is optional. Installation on the dedicated server is optional.

  4. 04

    Pick the file you checked

    Use the “Get this file” button beside 1.0.1. It opens that exact file at the source.

About this project

What does Lost Sky Islands add?

Overview

The "Lost Sky Islands" datapack (also available as a mod) adds clusters of sky
islands to your Minecraft world. These sky islands are generated as Minecraft
structures and can vary in size. You can find ruins of some lost civilization
on these islands, some of which may hold valuable treasures. If you ever feel
bored living on the ground, you can also use the islands to start a sky base.

This datapack is balanced against vanilla progression. The block palettes are
also chosen to better fit vanilla worlds (e.g., wool blocks are only used in
building parts where they make sense, not in general terrain texturing).
Therefore, adding this datapack shouldn't break the vanilla experience.

This datapack is also designed to allow easy customization, so you can tweak it
to fit your play style, or to better integrate it in a modpack.

Installation

Datapack File (.zip) Installation

  • For single-player worlds, simply add the datapack during world creation and
    enable it just like installing other datapacks.
  • For servers, put the datapack in the datapack folder within your world
    folder.

Mod File (.jar) Installation

You can easily install it like other mods by putting the .jar file under your
Minecraft instance's mods folder. Supported mod loaders include Forge,
NeoForge, and Fabric.

IMPORTANT: For Fabric, you also need to install Fabric API.

Compatibility

Minecraft Compatibility

This datapack should be compatible with all Minecraft versions between 1.21.10
and 26.2, including 1.21.10 and 26.2.

Mod Compatibility

Since this datapack only adds new structures in the sky, it should be compatible
with common worldgen mods. Although the sky islands may look a bit small if you
use mods like Tectonic, because they are designed around vanilla scale.

If you use another mod/datapack that also adds structures in the sky, there is
a small chance of overlapping structures.

Permission

Feel free to include this mod/datapack in your modpacks.

Although the license is ARR, you're permitted to customize the behaviors of this
datapack without directly modifying the original .jar or .zip file by
creating another datapack or use tweaker mods. See the "Customization" section
below for more details.

Customization

To customize the behaviors of this datapack, you can create a new datapack to
override JSON definitions in this datapack (you need to make sure it loads after
this datapack/mod), or use more advanced tools like KubeJS.

When not explicitly stated, all JSON or structure NBT file paths below are
relative to the data folder in the datapack.

IMPORTANT: Overlays are used to support multiple Minecraft versions.
Depending on the Minecraft version you are using, you may need to use files
from the corresponding overlay for reference. For example, if you want to
override lostskyislands/worldgen/placed_feature/cave_ore_rare_1.json, for
Minecraft 1.21.10, you can simply refer to the file under the root data
directory as the baseline. However, for Minecraft 26.1, you will need to refer
to the same named file under the overlay directory patch_26_1 as the baseline.

Expand to View Technical Details

Structure Placement

To change the biomes in which sky islands can generate, override the following
biome tag:
lostskyislands/tags/worldgen/biome/has_structure/sky_islands_plain.json.

To change the spacing or separation of the sky island structures, override
lostskyislands/worldgen/structure_set/sky_islands.json. By default, sky
islands have a slightly larger separation than villages, so they don't clutter
the sky view.

To customize each individual sky island structure's properties (e.g., height
range, spawn overrides, etc.), override the structure definitions files under
lostskyislands/worldgen/structure.

Loot Tables

All loot tables for chests, barrels, decorated pots can be found under
lostskyislands/loot_table/chests, allowing detailed controls of loot
generation.

For common chests, barrels, decorated pots on any island:

  • lostskyislands/loot_table/chests/barrel_supplies.json
  • lostskyislands/loot_table/chests/common_pot_standard.json

For chests, barrels, decorated pots on specific islands:

  • lostskyislands/loot_table/chests/barrel_garden.json - On some flower garden
    islands.
  • lostskyislands/loot_table/chests/barrel_ladder.json - On vertical connector
    islands with ladders.
  • lostskyislands/loot_table/chests/barrel_mill.json - On islands with windmill
    ruins.
  • lostskyislands/loot_table/chests/common_pot_animal_pen.json - On islands
    with animal pens.
  • lostskyislands/loot_table/chests/common_pot_cave_supplies.json - On islands
    with caves.
  • lostskyislands/loot_table/chests/common_pot_treasure.json - On islands with
    fancy shrines.
  • lostskyislands/loot_table/chests/sky_doc_chest.json - On islands with sky
    docks.

For chests, barrels, decorated pots hanging below islands:

  • lostskyislands/loot_table/chests/hanging_chest.json
  • lostskyislands/loot_table/chests/hanging_pot.json

For chests, barrels, decorated pots in island caves:

  • lostskyislands/loot_table/chests/barrel_mushrooms.json - Inside caves with
    mushroom gardens only.
  • lostskyislands/loot_table/chests/barrel_cave_supplies.json
  • lostskyislands/loot_table/chests/cave_side_room_chest.json
  • lostskyislands/loot_table/chests/cave_side_room_pot.json

For underwater chests, barrels, decorated pots (usually in ponds, pools):

  • lostskyislands/loot_table/chests/underwater_chest_standard.json
  • lostskyislands/loot_table/chests/underwater_chest_treasure.json
  • lostskyislands/loot_table/chests/underwater_pot_standard.json
  • lostskyislands/loot_table/chests/underwater_pot_treasure.json

For chests, barrels, decorated pots in building parts:

  • lostskyislands/loot_table/chests/apothecary_products.json
  • lostskyislands/loot_table/chests/apothecary_supplies.json
  • lostskyislands/loot_table/chests/blacksmith_products.json - Finished
    products like tools, armor pieces, etc., in blacksmith ruins.
  • lostskyislands/loot_table/chests/blacksmith_supplies.json - Supplies or raw
    materials like coal, raw ores, etc., in blacksmith ruins.
  • lostskyislands/loot_table/chests/house_barrel_common.json
  • lostskyislands/loot_table/chests/house_chest_common.json
  • lostskyislands/loot_table/chests/library_treasure.json
  • lostskyislands/loot_table/chests/market_stall_common.json
  • lostskyislands/loot_table/chests/masons_house_supplies.json
  • lostskyislands/loot_table/chests/tavern_food.json
  • lostskyislands/loot_table/chests/tavern_supplies.json
  • lostskyislands/loot_table/chests/tavern_treasure.json
  • lostskyislands/loot_table/chests/temple_treasure.json

For chests, barrels, decorated pots in aircraft parts:

  • lostskyislands/loot_table/chests/airship_supplies.json
  • lostskyislands/loot_table/chests/airship_cargo.json - Contains more treasure
    items compared to "airship_supplies".

For suspicious gravel in house ruins:
lostskyislands/loot_table/archaeology/house_ruin.json.

Monster Spawners

By default, no standard monster spawners will generate. The corresponding
template pool is configured to contain an empty part. If you wish to have
monster spawners generated on the sky islands, you will need to override
lostskyislands/worldgen/template_pool/spawner/standard_spawner.json to include
part with desired monster spawners. These parts must be 1x2x1, with the jigsaw
block at the bottom and the spawner block on top. See the example parts under
lostskyislands/structure/common/spawner. You can create new parts with new
spawner types based on these examples.

If configured correctly, these monster spawners will generate in some building
ruins and caves.

Armor Stand Entities

Some building parts will generate armor stand entities with armor pieces on
them. If you want to customize the armor pieces there, you need to override this
template pool:
lostskyislands/worldgen/template_pool/entity/armor_stand_metal_armor.json. The
armor stand entity structure parts must be 1x3x1, with the jigsaw block at the
bottom and the armor stand entity sitting on top of it. You can refer to
examples under lostskyislands/structure/common/entity.

Artifacts

Artifact Generation

Some islands will generate a structure part with an artifact holder, which is an
item display entity designed to hold an artifact item (together with an
interaction entity to enable player interaction). Fancy particles will appear
around the artifact until it is taken by a player. An example structure part is
lostskyislands/structure/common/treasure/artifact_pedestal_sword_1.nbt, where
an enchanted diamond sword is inserted inside a stone pedestal. To add
customized artifacts (e.g., some fancy sword from a mod), you will need to
create similar parts of size between 3x3x3 and 3x7x3, and override the following
template pool to include your parts:
lostskyislands/worldgen/template_pool/treasure/artifact_pedestal.json.

This datapack includes some custom commands to make it easier to create such
structure parts. An example procedure to create a new artifact pedestal part:

  1. Load lostskyislands/structure/common/treasure/artifact_pedestal_sword_1.nbt
    in your dev world using a structure block.
  2. Run /function lostskyislands:dev/enable_dev_mode (note that dev mode is
    persistent per world unless you disable it with
    /function lostskyislands:dev/disable_dev_mode).
  3. Hold the artifact item in your main hand, stand at the center of the block
    you want to place the artifact, and run
    /function lostskyislands:dev/create_artifact_display. Note that for swords,
    pickaxes, shields, and tridents there are several specialized functions. For
    example, lostskyislands:dev/create_artifact_display_sword_in_stone will
    transform the sword's position as if it is inserted into the block you are
    standing on. If your item has different translations/rotations than vanilla
    ones, you may need to adjust the item display entity's transformation
    properties by yourself.
  4. Export the part under a new name.
  5. Include the new part in the template pool.

Ore Generation

Some islands with caves generates ores using feature pool elements. To customize
the ore generation, you can to override these files to customize possible ores
to generate and their frequency:
lostskyislands/worldgen/configured_feature/cave_ore_*.json.

You may also adjust the weights for common, uncommon, rare ores in
lostskyislands/worldgen/template_pool/feature/cave_ores.json.

Bees

Certain islands will generate beehives with bees in them. If you want to include
modded beehives or bees, you can override the following template pool:
lostskyislands/worldgen/template_pool/decor_beehive_stand.json. The beehive
parts used in this pool should have a size of 1x2x1. You can use
lostskyislands/structure/common/decor/beehive_stand_full_with_bees.nbt as an
example.

Project description from Modrinth.

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Lost Sky Islands by Minecraft version and loader

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