GalacticChunks
GalacticChunks is a high-performance storage layer designed to reclaim your disk space and eliminate save-lag. By modernizing how Minecraft data is stored, we make your server faster and your backups smaller. 📦 Shrink Your World: Achieve 3–10× better comp
Note that while GalacticChunks is still in development, each version gets tested to see if it works so play without worry. Made by Musawer
GalacticChunks is a next‑generation chunk storage engine that replaces Minecraft’s bulky .mca region files with a sleek, highly‑compressed .gregion format. It’s built for servers that want cleaner world storage, faster disk operations, and long‑term reliability—without touching Paper’s chunk logic or interfering with gameplay.
GalacticChunks is purely a storage layer. It does not modify world generation, ticking, lighting, or Paper/Purpur internals. Your server plays exactly the same—your world just becomes dramatically more efficient behind the scenes.
🚀 Key Features • Safe, Automatic Migration from .mca → .gregion GalacticChunks includes a fully safe migration system that converts your existing vanilla region files into its optimized .gregion format.
No commands
No world resets
No data loss
No interruptions
Your world stays exactly the same—only the storage format changes.
⭐ Your world is NEVER deleted Installing GalacticChunks does not wipe, reset, or regenerate your world. It simply reads your existing .mca files and writes them into .gregion format. If you ever remove the plugin, your original .mca files remain untouched.
⚡ 3× to 10× Smaller Region Files .gregion files are designed to be 3–10× smaller than vanilla .mca, using a combination of:
modern compression (including Zstd)
tighter binary layouts
reduced overhead and redundancy
This means:
faster backups
faster uploads/downloads
less disk I/O under load
significantly lower storage usage on hosts
🧪 Modern Compression Stack, Pure Java GalacticChunks uses a stack of modern compression and encoding techniques, including Zstd, to balance:
high compression ratio
fast decompression
stable performance
full cross‑platform support
Everything runs in pure Java—no native libraries, no JNI, no OS‑specific hacks.
🛠 Pure Storage Layer — Zero Gameplay Interference GalacticChunks does not change how chunks behave in‑game. It only changes how they are stored on disk.
It works seamlessly alongside:
ViaVersion / ViaBackwards / ViaRewind
ProtocolLib
AuthMe
Essentials
Anti‑Xray
Any world generator
Any Paper/Purpur fork
If your server loads chunks, GalacticChunks stores them—nothing more.
🌠 Perfect For Long‑term SMPs
Large or old worlds
Servers with limited disk space
Hosts with slower or shared storage
Anyone who wants cleaner, safer world files