
ChaosChunks
A NeoForge mod that gives you control over Minecraft world generation. Customize biome pools, blacklist or whitelist biomes, tweak region sizes, and use…
⬇ Download on Modrinth



ChaosChunks
NeoForge world generation control.
Features
- Custom biome selection system
- Dimension-specific biome control
- Chaos-style biome generation
- Configurable through world creation UI
- Biome tag and blacklist support
- Compatibility with dimension/biome mods
For usage please visit the wiki link
Version Numbering:
There being so many numbers may confuse some users so here is a brief explanation.
chaoschunks-[major_version].H#.F#-[minecraft_version].jar
[major_version] is the major mod version. This version value will increase when there is a considerable change in the mod like a UI change or worldgen change (like smooth biome generation for example)
H# is the hotfix version. Increase in this version number will tell you that there has been a fix to a bug or unexpected behaviour.
F# is the "Fun" version. Increase in this version number will tell you that only cosmetic changes are included in this version like banter or a painting being added.
T# is the test version. This number is completely independent and simply count up per minecraft version until either H or F increases.
[minecraft_version] is the minecraft version that jar is made for.
To see which jar is newer simply follow the [major_version] or if that one is the same add the numbers in H# and F# to get the total version number.
Known issues:
- Biomes without features are usually handled, but edge cases may still occur
- Restricting biome lists to too little (like only having #minecraft:is_nether) causes features to be missing or generation to stall, even keeping the game open when saving and closing.
For bug reports:
https://github.com/dermitio/ChaosChunks
Future Plans
- Hopefully nothing.
- Smooth biomes
- Updates to new minecraft versions
- De-voidification of the void biome!
- More sound effects and music
- Better UI
- True world generation customization (think of the old custom world type)
Note:
The mod is not exactly lightweight as it turns chunk generation into a benchmark for the CPU.
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 26.1, 26.1.1, 26.1.2
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
- Ships as chaoschunks-0.3.H1.F1-26.1.all.jar — drop this file into the mods folder
- Download size: 2.7 MB
- Download link checked 21 Aug 2026 — working
These come from our own check of the pack file, not from the source page.