Pre-Generating Your World

Every time a player flies into a new area, Minecraft has to "mathematically invent" the terrain on the fly. This is a massive CPU hog and is the #1 cause of those annoying lag spikes when exploring. Pre-generation is the secret weapon: it builds the world in advance so the server only has to "read" the files when players arrive.

Why You Need This

Zero Exploration Lag: No more "waiting for chunks to load" while flying with Elytras.
Controlled Growth: You know exactly how much disk space your world will take up.
Perfect Launch Days: Essential if you're expecting 10+ people to all spread out at once.

The Best Tool: Chunky

We recommend Chunky for every type of server (Paper, Fabric, or Forge). It’s fast, reliable, and won't crash your server while it's working.

Paper/Spigot: Install it in one click from the Plugins tab in Mission Control.
Fabric/Forge: Grab the mod from Modrinth and drop it into your mods/ folder.

Planning Your World Size

Generating a huge world takes time and disk space. Here’s a rough guide:

Radius	The Vibe	Disk Space (Est.)
2,000 blocks	Small private survival.	~1 GB
5,000 blocks	A standard active community.	~2.5 GB
10,000 blocks	A large public server.	~10 GB

[!IMPORTANT] Be careful with that 10k radius! Minecraft worlds get heavy fast. 10,000 blocks in every direction means you're generating a lot of data.

How to Start the Process

Run these commands in your Console to get things moving:

Center it: /chunky center 0 0 (or wherever your spawn is).
Set the size: /chunky radius 5000
Go!: /chunky start

Pro-Tips for a Smooth Generation

Go "Quiet": Use /chunky quiet 10 to stop the plugin from spamming your console every second.
Do it Overnight: Generation is heavy. It's best to run it when nobody is online to ensure it finishes as fast as possible.
Set a Border: Once you're done, use the /worldborder command to keep players inside the area you just generated. This stops "accidental" lag spikes from someone wandering too far.

Struggling to get it started? Join our Discord and we'll help you calculate the perfect radius for your community.