NX backup
by NagaResst
NX backup adds an xb command set to Fabric worlds, letting an admin save, list and restore game states from inside the game.
What it does
Running xb create records the state of the world at that moment, and a note can be attached when it is made. The xb list command shows each backup with its number, creation time and note, and the xb restore command returns the game to a chosen backup. A regional restore option limits the rollback to chunks inside a given coordinate range, so players outside that range keep their current progress. The backup interval is set with the xb backup-interval command, and retention rules keep recent backups for 30 minutes over one day and 6 hours over one week.
The mod runs on the client or the server, and either side can run it alone. Fabric API and Fabric Language Kotlin are required, and PolyLib is an optional dependency. NX backup is published for Fabric only, and is open source under the GNU Affero General Public License v3.0 only.
Key features
Multithreaded backups
Backup work runs on several threads, which shortens the time a backup takes on large worlds.
Incremental compression
Only changed data is stored in each backup, and large files are compressed to reduce disk use.
Automatic server restart
After a restore on a server, the server restarts by itself so play can resume without manual steps.
Cloud backup
Backups can be sent to Microsoft OneDrive, so copies stay available outside the local machine.
Compatibility
Latest build for each game version and loader.
1.21.x12 of 12 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 2
Optional 1
Use cases
Who it’s for: Server owners who want scheduled and regional backups, and single-player players who want to save and return to a named state from inside the game.
How it compares
SaveMyItems is server-side only, open source under the Apache License 2.0 and published for 1.21 – 1.21.1, so players need nothing installed. ServerBackupFabric is server-side only, released under CC0 1.0 Universal and built for 1.21.5 alone. Better World Backup runs on the client and server, is not open source and is released under All rights reserved for 1.21 – 26.3. NX backup adds regional restore to this set.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| NX backup | Fabric | 1.21 – 1.21.11 | Client or server, optional | 2026-07-11 |
| SaveMyItems | Fabric | 1.21 – 1.21.1 | Server-side only | 2025-12-29 |
| ServerBackupFabric | Fabric | 1.21.5 | Server-side only | 2025-04-15 |
| Better World Backup | Fabric | 1.21 – 26.3 | Client and server | 2026-10-07 |
Questions
Does NX backup need Fabric API?
Does the server need the mod?
Which versions does NX backup support?
Can a restore change only part of a world?
What the author says
This way, you create a backup with a note. This command displays the last 6 backups. If you have many backups, you can click the gray font button to view more backups.
Official listing
- Modrinth page
- modrinth.com/mod/nx-backup
- Owner
- NagaResst
- Published
- 2026-05-04
- Updated on Modrinth
- 2026-07-11
- Facts verified
- 2026-10-15