Nucleoid Creator Tools
by NucleoidMC
Nucleoid Creator Tools gives map builders a set of tools for making maps for the Nucleoid ecosystem, with workspaces, regions and bounds handled in the game.
What it does
A map workspace is a separate dimension where a builder works on a map. Workspaces can be created with custom chunk generators and opened like a regular dimension, for example a bedwars:nether dimension that behaves like minecraft:nether. Players join a workspace through a teleport, and once inside the dimension is free to build in. Entering a workspace shows a box outline of the map bounds, drawn with particles.
The map bounds are defined by two corners, an axis-aligned bounding box, and an origin block position. Each workspace is set up with an id, its bounds and its origin, and the origin decides how the exported map is placed. Setting the origin too high or too low can push part of the map outside its bounds, and a map origin set below the lowest y of the bounds moves the exported map downward. The workspace is exported as a map template file that can be read by the Nucleoid ecosystem.
The mod is server-side only and is released under the GNU Lesser General Public License v3.0 only. It is open source, with public source code and an issue tracker. Files are published for Fabric and Quilt, across the game versions 1.19.3, 1.19.4, 1.20.1, 1.20.2, 1.20.4 and 26.1.2. The latest Fabric file is 0.2.3+26.1.2 for 26.1.2, published 2026-05-20.
Key features
Map workspaces
Each workspace is a dimension where a builder works on a map, joined by teleport and exported later as a template.
Custom chunk generators
Workspaces can be created with custom chunk generators, so a map can use a terrain type other than the default.
Bounds by two corners
A region of the map is set by selecting two corners, shown as an axis-aligned box that the builder can match to the desired shape.
Origin setting
The origin block position controls where the exported map sits, and a wrong value can move it outside the bounds.
Named regions
Regions are named and read by the game code to mark areas where something happens, with the same name used for several regions.
Block selection
Right clicking a block shows a particle box, and a second right click picks the block being looked at as the second corner.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
How it compares
Adventure Map Developer is a Fabric client-side only mod under the GNU Lesser General Public License v3.0 or later, published for 1.20.4 – 1.21.4, so it runs on a player's client and not on the server. Adventure Map Utilities is also a Fabric client-side only mod, under the GNU Lesser General Public License v3.0 only, with files for 1.19.3 – 1.21. Client Maps is a Fabric client-side only mod under the MIT License, covering 1.20.1 – 26.3. Nucleoid Creator Tools is server-side only and reaches 26.1.2 on Fabric and Quilt.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Nucleoid Creator Tools | Fabric and Quilt | 1.19.3 – 26.1.2 | Server-side only | 2026-05-20 |
| Adventure Map Developer | Fabric | 1.20.4 – 1.21.4 | Client-side only | 2025-01-03 |
| Adventure Map Utilities | Fabric | 1.19.3 – 1.21 | Client-side only | 2024-06-30 |
| Client Maps | Fabric | 1.20.1 – 26.3 | Client-side only | 2026-09-15 |
Questions
Does Nucleoid Creator Tools need to be on the client?
Which loaders does Nucleoid Creator Tools support?
What happens if the origin is set too high or too low?
In the catalog
Nucleoid Creator Tools is one of 8,016 Management mods on ModsFinder, and one of 5,930 Management mods for Fabric. 15,189 mods support Minecraft 26.1.2.
More from NucleoidMC
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What the author says
The first step to creating a map is opening a map workspace. A map workspace is essentially just a dimension that you can build within, which can later be exported into a map template file readable by Plasmid. An empty void map workspace can be opened by running: /map open (e.g. /map open bedwars:cubes) The required…
Official listing
- Modrinth page
- modrinth.com/mod/nucleoid-creator-tools
- Owner
- NucleoidMC
- Published
- 2023-01-08
- Updated on Modrinth
- 2026-05-20
- Facts verified
- 2026-10-15
