BatleRoyalBorder
by Neburalis
BatleRoyalBorder lets a server owner shrink the world border step by step during a UHC or battle royale style match, using the sr command.
What it does
Once configured, the border closes in on the playing area in fixed increments rather than all at once, so players are pushed closer together over the course of a round. Shrinking runs on its own after the start command, following the amount, duration and delay set beforehand, which leaves the operator free to watch the match. Progress is shown to everyone on a boss bar with a countdown, and players also get chat notifications as each step begins.
The mod is built for ultra hardcore and PvP events where encounters should be forced rather than left to chance. Its shrink time and delay accept values such as 30s, 1m or 0.5m, so a round can be paced from fast to slow. A single command can pull the border inward by 50 blocks over a span of 30 seconds, then pause for 10 seconds before the next step. Install Fabric API alongside it, since it is a required dependency, and place the mod on the server only.
Key features
Incremental border shrinking
The sr commands shrink the world border a set number of blocks at a time instead of resizing it in one jump.
Configurable timing
Shrink duration and the delay between shrinks accept time formats such as 30s, 1m and 0.5m.
Boss bar countdown
A boss bar displays the shrinking progress and a visual countdown for every player.
Automatic shrink cycle
Once started, shrinking follows the chosen parameters without further commands until it finishes.
Chat notifications
Players receive updates in chat throughout the process, marking each stage of the closing border.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Requirements
Dependencies declared by the latest file for each loader.
Required 1
Use cases
Who it’s for: Server owners and event hosts who run UHC, PvP or battle royale style matches on a Fabric server.
How it compares
Shrinking World is a Fabric mod for client and server, under the MIT License and published for 1.21.10 – 1.21.11, while BatleRoyalBorder runs on the server alone and is open source under GPL-3.0 for 1.21.8. SimonUHC is also Fabric and client and server, released for 1.21.11 under the Creative Commons Attribution 4.0 license. Unlocked World Border is open source under the Apache License 2.0, client and server, on Fabric for 1.21.4 – 1.21.11.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| BatleRoyalBorder | Fabric | 1.21.8 | Server-side only | 2025-07-26 |
| Shrinking World | Fabric | 1.21.10 – 1.21.11 | Client and server | 2026-01-19 |
| SimonUHC | Fabric | 1.21.11 | Client and server | 2026-05-17 |
| Unlocked World Border | Fabric | 1.21.4 – 1.21.11 | Client and server | 2026-02-09 |
Questions
Does BatleRoyalBorder need Fabric API?
Do players need to install BatleRoyalBorder?
How are shrink times written in the sr command?
In the catalog
BatleRoyalBorder is one of 2,135 Minigame mods on ModsFinder, and one of 1,454 Minigame mods for Fabric. 17,695 mods support Minecraft 1.21.8.
Similar mods
What the author says
BatleRoyalBorder is a Minecraft mod designed for players who enjoy a more dynamic and challenging gameplay experience. This mod introduces commands that allow you to shrink the world border incrementally, creating an intense and competitive environment. Perfect for UHC (Ultra Hardcore) games or any scenario where you…
Official listing
- Modrinth page
- modrinth.com/mod/batleroyalborder
- Owner
- Neburalis
- Published
- 2025-07-26
- Updated on Modrinth
- 2025-07-26
- Facts verified
- 2026-10-15