World's End

When the Ender Dragon dies, the world begins to end.

Once the dragon falls, a huge circle centered on world spawn (60 million blocks across, so the entire world) starts shrinking. Everything outside of it gets deleted. Blocks near you visibly break off and drift away into the sky, and a boss bar tells you how far away the edge is. It won't stop until it reaches spawn, and it can't be undone.

How long can you live on a world that is going to end?

⚠️ THIS MOD DESTROYS YOUR WORLD ⚠️

Read this before installing. Seriously.

Once triggered, this mod deletes terrain permanently. Deleted blocks are removed from the save file itself. There is no undo and no recovery.
The trigger is the Ender Dragon having been defeated at any point. That means:
- Killing the dragon with the mod installed starts the destruction.
- Installing the mod on a world where the dragon was already killed (even years ago) starts the destruction the moment you load the world.
Removing the mod stops further destruction, but everything already erased stays erased.

Always keep backups

Back up your world before installing this. Back it up again before killing the dragon. The mod does exactly what the name says.

What it does

After the dragon is defeated, a circular border starts shrinking from the edge of the world (radius 30,000,000) towards spawn.
Every block outside the circle is deleted. Near players, blocks break off and float away with breaking sounds.
Each player gets a boss bar: "The End is X blocks away."
The shrink speed follows a schedule: fast while it's still millions of blocks out, slowing down as it gets close to spawn so you actually get to see the world close in around you. With the default settings, the whole thing takes a bit over 2 hours from the dragon's death to the last block at spawn (it can vary a little depending on the server's performance and how many players are loading chunks).
Fluids stop cleanly at the edge. Chunks that load in beyond the border (including freshly generated ones) are erased on sight.
Everything is persistent: it survives restarts and it follows players wherever they go.

Performance

This mod does a lot of stuff rendering-wise, so a performant PC is recommended.

Commands

All commands require operator permission.

Command	Effect
`/worldsend start`	Starts the end of the world immediately, no dragon required.
`/worldsend pause`	Freezes the border in place. (Terrain already outside it stays gone, and still gets erased if observed.)
`/worldsend resume`	Un-freezes the border.
`/worldsend radius <blocks>`	Sets the border's radius directly (starts the end if it hasn't started). Shrink only, the border can never grow, because what's outside no longer exists.

Configuration

A config file is created at config/worlds-end.json on first launch:

speedMultiplier — a single number that scales the whole shrink speed. Set it to 100.0 if you just want to watch the world get deleted quickly, or 0.1 for a slow burn on a long-term server (with the default schedule that's roughly 2 hours total, so 0.5 makes it ~4 hours, 2.0 makes it ~1 hour, and so on).
speedSchedule — the full speed table, where each entry says "above this radius, shrink this many blocks per tick".

Config changes apply when a world is loaded, no game restart needed.

Requirements

Fabric Loader 0.19.3+
Fabric API
Minecraft 26.2
Java 25+

FAQ

Can I stop the destruction? You can /worldsend pause it indefinitely, or remove the mod. Erased terrain does not come back either way.

Does it work on servers? Yup, the destruction happens around each player, wherever they are, and the boss bar is per-player.

What happens when the radius reaches zero? Everything is gone. The overworld is void. You could maybe hide in the nether, but nothing more can exist in the overworld.

My world got destroyed and I didn't want that! The warning at the top of this page is there for a reason. Restore your backup. You do have a backup... right?

Source code, issue tracker, and license (MIT) on GitHub.