ShadowBorders
by KrripeYT
ShadowBorders gives each dimension of a Fabric server its own world border, with a separate size and center for the Overworld, Nether and End.
What it does
Each dimension can carry a border of its own size and center, so the Overworld, Nether and End are limited independently. The borders work alongside Minecraft's native world border mechanics rather than replacing them, and the mod is server-side only, so players join without installing it.
Each dimension keeps its own border, and those settings survive a server restart. Portals and spawn points are clamped within the border limits, and a configurable damage behavior applies in warning zones. Commands are gated by permission, and LuckPerms works with them. Fabric API, Fabric Language Kotlin and LuckPerms are required.
Files are published for Fabric only, for game versions 1.21 – 1.21.8, with 0.1 for 1.21.8 as the latest file. The code is under the GNU General Public License v3.0 only, and the mod is not open source.
Key features
Per-dimension borders
The Overworld, Nether and End each take a border with its own size and center.
Persistent borders
Border settings are saved for each dimension and survive server restarts.
Clamped teleportation
Portals and spawn points are moved inside the border limits automatically.
Safe zone damage warnings
Warning zones can be set per dimension, with configurable damage behavior.
Reloadable config
Borders can be updated without restarting the server.
Gallery
Compatibility
Latest build for each game version and loader.
1.21.x9 of 9 versions with builds
Only full game releases are shown. This mod publishes no snapshot builds.
Requirements
Dependencies declared by the latest file for each loader.
Required 3
Use cases
Limiting a single world
A server can keep the Nether small while leaving the Overworld large, and set separate centers for each dimension.
Who it’s for: Server owners who run Fabric servers and want border sizes that differ between dimensions, with permissions handled through LuckPerms.
How it compares
Dimensional World Borders is a Fabric mod that needs both client and server, under the MIT License, for 1.21.1 – 1.21.11. DimWorldBorder covers Fabric and NeoForge, is server-side only, and is not open source, for 1.21.1 – 1.21.8. Smarter Nether Portals is server-side only and open source under the GNU General Public License v3.0 only, but it targets 1.21.11.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| ShadowBorders | Fabric | 1.21 – 1.21.8 | Server-side only | 2025-04-25 |
| Dimensional World Borders | Fabric | 1.21.1 – 1.21.11 | Client and server | 2026-07-06 |
| DimWorldBorder | Fabric and NeoForge | 1.21.1 – 1.21.8 | Server-side only | 2026-07-27 |
| Smarter Nether Portals | Fabric | 1.21.11 | Server-side only | 2026-03-20 |
Questions
Does ShadowBorders need Fabric Language Kotlin?
Do players need to install ShadowBorders?
Can border settings be changed while the server runs?
Which game versions does ShadowBorders support?
In the catalog
ShadowBorders is one of 8,515 World generation mods on ModsFinder, and one of 4,027 World generation mods for Fabric. 17,695 mods support Minecraft 1.21.8.
More from KrripeYT
Similar mods
Official listing
- Modrinth page
- modrinth.com/mod/shadowborders
- Owner
- KrripeYT
- Published
- 2025-04-25
- Updated on Modrinth
- 2025-04-25
- Facts verified
- 2026-10-15