Improved Structure Blocks
Improved Structure Blocks is a Fabric world generation mod that makes saving, loading and placing large structures simpler through a revised structure block GUI.
What it does
The mod changes how structures are handled in creative and development work. A structure export block and a structure loader replace the vanilla workflow, and loading shows the details of a structure before it is placed, which keeps memory use lower when large structures are involved. Structure size is limited only by available RAM, and the mod adds an unlimited block variant alongside the simplified one.
The mod is aimed at people who build and test Minecraft structures often. Saving a structure under a name creates an automatic backup of the previous version, stamped with date and time. Structures can be rotated with a single click, and the GUI is laid out for frequent changes. It needs Kotlin to run and is published under the MIT License as open source. Installation needs Fabric Loader and Kotlin, and the mod works standalone without other mods from its author.
Files target game versions 1.20.4 and 1.20.6, with 1.0.4 for 1.20.6 as the latest file, first published on 2024-06-13 and last updated on 2025-07-26. The code is hosted with a public source repository, issue tracker and wiki. Snapshot builds are not part of the catalog listing.
Key features
Simplified structure saving
Structures are exported through a dedicated export block item, which stores them under a chosen name.
Automatic backups
Each save under an existing name keeps the previous version as a backup with the date and time in its name.
Lighter loading
Structure details are read before placement, so large structures place with less RAM than a full load would need.
One-click rotation
A structure can be rotated by a single click in the block interface before it is placed.
Unlimited structure blocks
A simplified unlimited variant of the vanilla structure block removes the block limit, with size bounded only by memory.
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
How it compares
Same Place Structures is server-side only, open source under the MIT License and published for 1.20.1 – 1.20.6. Rollback is client-side only and open source under the GNU General Public License v3.0 or later, with files for 1.19.3 – 1.19.4. Improved Structure Blocks is for client and server, so both sides need it, and its files cover 1.20.4 and 1.20.6.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Improved Structure Blocks | Fabric | 1.20.4 – 1.20.6 | Client and server | 2025-07-26 |
| Same Place Structures | Fabric | 1.20.1 – 1.20.6 | Server-side only | 2025-01-14 |
| Rollback | Fabric | 1.19.3 – 1.19.4 | Client-side only | 2023-04-25 |
Questions
Does Improved Structure Blocks need Kotlin?
Does the server need the mod as well as players?
Which game versions does Improved Structure Blocks support?
In the catalog
Improved Structure Blocks is one of 8,515 World generation mods on ModsFinder, and one of 4,027 World generation mods for Fabric. 11,154 mods support Minecraft 1.20.6.
More from backstube-gaming
Similar mods
What the author says
Designed to stream-line frequent changes to minecraft structures when developing them. This mod adds: - the Structure Export Block - a simplified and unlimited version of the Vanilla Structure Block - unlimited blocks (make sure you have enough RAM) - when exporting a structure e.g. "name1" it creates a backup of the…
Official listing
- Modrinth page
- modrinth.com/mod/structure-saver
- Owner
- backstube-gaming
- Published
- 2024-06-13
- Updated on Modrinth
- 2025-07-26
- Facts verified
- 2026-10-15