Auto Border Growth is a very lightweight datapack that automatically increases the world border based on the number of players online.
Every hour, the border expands by an amount equal to the current player count.
You can also change the expansion rate using:
/scoreboard players set #rate bg_data <multiplier>
1 → normal speed
2 → double expansion
0 → pauses expansion
- Perfect for survival and SMP servers
- No mods required
- Easy to tweak and understand
Quick facts
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 1.21.11
- 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 — see the MC Java Mods guides for the full walkthrough.
Verified by MCModsHub
- Downloads as AutoBorder-1.21.11.zip
- Download size: 4 KB
- Download link checked 12 Sept 2026 — working
These come from our own check of the pack file, not from the source page.