
Based off of an idea suggest by This Reddit Post
The world border will be set to:
min(MaxSize, max(MinSize, PlayerCount * Multiplier))
at all times, and a chat message will be sent every time the size is updated.
Uploaded onto here for easier sharing. There are 3 settings:
- Multiplier (How much the size will increase per player) Default: 40
- Minimum Size (What the minimum size will be, regardless of player count) Default: 20
- Maximum Size (What the maximum size will be, regardless of player count) Default: 1000
There are 5 commands: (250 is just an example number)
- /function borderman:bordy/set_maximum {"value":250}
- /function borderman:bordy/set_minimum {"value":250}
- /function borderman:bordy/set_multiplier {"value":250}
- /function borderman:bordy/reset_datapack
- /function borderman:bordy/help
The first 3 just set scoreboard variables to the included value - scoreboard "worldBorderSize" each editing values MaxSize, MinSize, and multiplier respectively.
reset_datapack will change the flag which prevents the datapack from doing a fullsetup upon a reboot, and then trigger a reload, re-initializing all scoreboards and values back to default.
help will bring up a list of the other 4 commands to make the value syntax easier to access.
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 1.21.2, 1.21.3, 1.21.4
- 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.
- Downloads as PlayerBorder-v1.1.0.zip
- Download size: 6 KB
- Download link checked 22 Aug 2026 — working
These come from our own check of the pack file, not from the source page.