
Aetherial Islands
Datapack that creates a whimsical floating islands world, with mountains, rivers, and floating ocean bowls!
Screenshots






About this Mod
Aetherial Islands
This world generation datapack seeks to redefine the standards for floating island generation.
The typical floating island generation tends to be large fragmented land masses. Not to mention they don't have hills, rivers, or oceans. But this one does by rethinking 3d noise.
With this datapack, you'll be able to experience soaring islands, with rivers and mountains. Flat plains and caves. Structures on rolling hills, and more.
All of the structures and biomes generate with this world type, as they should.
However, you may get issues with some structures generating in the void, but...
Also checkout
- No Void Structures a mod that stops any weirdness with structures generating broken and cut off in the void.
- Diabolical Islands a mod that brings the Aetherial Island generation to the Nether!
- Angel Islands a mod that changes the normal overworld to include Aetherial Islands when in deep ocean biomes!
- Skylands over the Sea a mod that replaces the void in Aetherial Islands with an infinite ocean.
- Aetherial Islands: Clusters Edit an add-on that creates zones where islands will and won't generate, creating large gaps between island clusters
Compatibility: Does this work with insert mod name here?
If that mod changes the terrain, one of the mods will probably overwrite the other. If that mod adds biomes, it should be compatible, but if you have issues with bodies of water not generating, use the optional dependency, Lithostitched. This is just because of the tricky technique I had to use to make this, along with Minecraft's weirdness with surface builders. Some issues may need specific compatibility packs made, which I may make in the future.
Sponsor: Sparked Host
Available Versions
How to Install Aetherial Islands on Your Server
Order Server
Order a Minecraft Java server with at least 4 GB RAM (6 GB recommended).
Set datapack Loader
In the panel under "Egg", select the datapack loader and matching Minecraft version (1.21.11).
Install Mod
Open the mod browser in the dashboard and search for "Aetherial Islands". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.21.11, 1.21.10, 1.21.9 (+84 more)
Server-side
✓ RequiredRecommended RAM
6 GB(min. 4 GB)Frequently Asked Questions
Aetherial Islands server crashes on startup – what to do?
Most common cause: wrong datapack version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 4 GB RAM is allocated and the loader matches the mod version (1.21.11). You can switch loaders with one click in the panel.
Is Aetherial Islands compatible with datapack and fabric and forge and neoforge and quilt?
Aetherial Islands officially supports datapack, fabric, forge, neoforge, quilt for Minecraft 1.21.11, 1.21.10, 1.21.9. Note: Forge and Fabric mods are NOT cross-compatible – pick one loader and stick with it. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with Aetherial Islands – how to optimize performance?
Recommended RAM: 6 GB (per 5 players). Use /spark profiler to check if Aetherial Islands consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.
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Rent Modded Server
Install Aetherial Islands with just one click on your server.