Huge Structure Blocks
by SamB440
With Huge Structure Blocks installed, structure blocks accept sizes up to 512 blocks and their bounding boxes render out to 256 blocks.
What it does
Structure blocks normally cap their size and corner search radius, and the mod raises both to 512 blocks. The bounding box of a structure block is drawn from further away, out to 256 blocks, so builders can see the full area they are saving or loading. An optimised corner search and a cache of known structure block corners let the game resolve those corners without repeating the search each time.
The mod also removes two limits from world generation. The Jigsaw depth cap is gone, and structure features and pools are no longer held to the 128 block distance limit. A creative item group collects the structure block items in one place. Fabric API is required on every loader, and the author notes that older game versions are being updated with these optimisations and limit removals. Every player and the server need a copy of the mod. The code is open source under the GNU Lesser General Public License v3.0 only, and the source code and issue tracker are public.
Key features
Larger structure blocks
Structure blocks accept a maximum size and corner search radius of 512 blocks instead of the vanilla limit.
Longer bounding box view
The bounding box of a structure block renders out to 256 blocks, so the full saved area stays visible.
Corner cache
A cache of structure block corners lets the game resolve them instantly instead of searching again.
No Jigsaw depth limit
Jigsaw structures can nest without the depth cap that vanilla applies.
Unlimited pool distance
Structure features and pools are not restricted by the 128 block distance limit.
Creative item group
Structure block items are gathered in their own creative tab.
Compatibility
Latest build for each game version and loader.
26.x4 of 4 versions with builds
1.21.x7 of 7 versions with builds
1.20.x7 of 7 versions with builds
1.19.x5 of 5 versions with builds
1.18.x2 of 2 versions with builds
1.16.x1 of 1 version 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 1
Required by 8 mods
Use cases
Large builds
Builders working on big structures can save and load areas up to 512 blocks across with a single structure block.
Custom worldgen packs
Pack makers who rely on Jigsaw structures or distance-based pools are no longer limited by the depth cap or the 128 block distance.
Who it’s for: Builders and pack makers who work with large structure blocks or custom Jigsaw and structure pool data. Server owners running custom worldgen can use it, since the server and players both need the mod.
How it compares
Structure Layout Optimizer is server-side only and open source under the MIT License, with files for 1.16.1 – 26.3 on Fabric, Forge and NeoForge. Huge Structure Blocks needs both the client and the server, so players must install it too, and it is limited to the 1.16.5 – 26.2 range. Not Enough FPS is client-side only and Fabric-only, covering 1.21.11 – 26.3, so it addresses a different side of the game.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Huge Structure Blocks | Fabric, Forge and NeoForge | 1.16.5 – 26.2 | Client and server | 2026-07-19 |
| Structure Layout Optimizer | Fabric, Forge and NeoForge | 1.16.1 – 26.3 | Server-side only | 2026-09-16 |
| Not Enough FPS | Fabric | 1.21.11 – 26.3 | Client-side only | 2026-09-16 |
Questions
Does Huge Structure Blocks require Fabric API?
Do players need to install Huge Structure Blocks?
Which game versions have files?
In the catalog
Huge Structure Blocks is one of 3,545 Optimization mods on ModsFinder, and one of 2,575 Optimization mods for Fabric. 13,894 mods support Minecraft 26.2.
More from SamB440
Similar mods
What the author says
Note: I am currently updating old versions to include the new optimisations and limit removals. Huge structure blocks increases the maximum structure block size and corner search radius to 512 blocks. Render of the bounding box is also increased to 256 blocks.
Official listing
- Modrinth page
- modrinth.com/mod/huge-structure-blocks
- Owner
- SamB440
- Published
- 2021-04-21
- Updated on Modrinth
- 2026-07-19
- Facts verified
- 2026-10-15