Clouds Unbound
by Azturax
Clouds Unbound adds block-based clouds that generate high above the terrain in the Overworld, blending into vanilla biomes for a fresh skyward adventure.
What it does
Clouds Unbound places cloud blocks in clusters high above the surface, following the vanilla biome distribution so they appear where the existing world layout allows. Four cloud types generate at different heights: standard clouds at y:256, Sulfuric Clouds from altitude y:80, Coal Clouds a few blocks higher at y:100, and Chorus Clouds from a lower level at y:128.
The mod is a NeoForge mod for 1.21.1 and runs on the client and the server, so both sides need it. It is published as a single 1.0.0 release dated 2026-02-02, and it is released under All rights reserved, so it is not open source. Cloud blocks are not solid: players fall through them, and a hoe is the correct tool for working with them.
Key features
Natural cloud generation
Clouds form clusters across the Overworld during world generation, so new worlds gain skyward terrain without extra setup.
Four cloud types
Standard, Sulfuric, Coal and Chorus clouds each generate at a different altitude, giving layers of distinct materials above the ground.
Passable cloud blocks
Cloud blocks are not solid, so players fall through them, which makes travel between cloud layers a matter of careful placement.
Hoe-based tools
Cloud blocks are collected with a hoe, the correct tool for the material.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Sky-themed survival worlds
Players exploring a new world meet cloud layers at fixed heights, which add vertical space to the Overworld.
Decorative builds
The cloud materials can be used in builds that need a high, airy look.
Who it’s for: Players who want more vertical variety in the Overworld, and server owners who want generated cloud layers in a NeoForge world for 1.21.1.
How it compares
In the skies is a NeoForge mod for 1.21.8 with client and server environment under All rights reserved, so its version range differs from Clouds Unbound's 1.21.1 build. Area Effect Clouds 3D targets Forge and NeoForge for 1.20.1 – 1.21.1 with the same client and server environment and the same license, but it is not open source. Infinite Clouds is open source under the MIT License and runs client-side only, for Forge and NeoForge 1.20.1 – 1.21.1, so servers need nothing installed.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Clouds Unbound | NeoForge | 1.21.1 | Client and server | 2026-02-02 |
| In the skies | NeoForge | 1.21.8 | Client and server | 2026-07-03 |
| Area Effect Clouds 3D | Forge and NeoForge | 1.20.1 – 1.21.1 | Client and server | 2026-07-01 |
| Infinite Clouds | Forge and NeoForge | 1.20.1 – 1.21.1 | Client-side only | 2025-12-30 |
Questions
Which loader does Clouds Unbound support?
Does Clouds Unbound have to be installed on the server?
Why do players fall through the cloud blocks?
In the catalog
Clouds Unbound is one of 8,515 World generation mods on ModsFinder, and one of 4,175 World generation mods for NeoForge. 32,366 mods support Minecraft 1.21.1.
More from Azturax
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What the author says
Clouds Unbound introduces block-based clouds that spawn naturally at high altitudes across the Overworld, blending seamlessly into the vanilla world generation for a fresh skyward adventure. The correct tool for clouds is a hoe, though, cloud blocks aren't solid! You fall right through! Natural Generation: Clouds…
Official listing
- Modrinth page
- modrinth.com/mod/clouds-unbound
- Owner
- Azturax
- Published
- 2026-02-02
- Updated on Modrinth
- 2026-02-02
- Facts verified
- 2026-10-15