ModsFinder

NeoTerrain Diffusion

by cblegoboy

NeoTerrain Diffusion is a NeoForge port of a world generator, released in June 2026 for Minecraft 1.21.1.

NeoForgeServer-side onlyMIT LicenseOpen source1.21.1

What it does

The port generates terrain on a dedicated server through a server-side world setup. A player does not install it to join. World creation for this port is done in server.properties rather than on the Create World screen, so the client-side single-player setup of the original is fully replaced.

The build is aimed at newer releases of the NeoForge 1.21.1 line on a dedicated server. The Windows build uses DirectML GPU inference and expects a DirectML-compatible GPU. It warns about missing CUDA during normal startup, and a CUDA-capable setup is required for the Windows server build. Model files are prepared the first time the server starts.

The mod is released under the MIT License and is open source, with source code and an issue tracker linked from the project.

Key features

  1. Server-side terrain generation

    The port supports server-side use only, and it is meant for a NeoForge dedicated server.

  2. DirectML GPU inference

    The Windows build runs its model inference on the GPU through DirectML, and it tells server owners when CUDA is missing.

  3. Terrain explorer command

    A server-side terrain explorer command is included for inspecting generated terrain.

Compatibility

Latest build for each game version and loader.

No stable releases
Every published file is a beta or alpha build.
1.21.12.2.0-neoforge.1-windows+1.21.1
ReleaseBetaAlphaNot available

Only full game releases are shown. This mod publishes no snapshot builds.

Use cases

Running a local dedicated server

A local server can keep its jar linked to a launcher profile's mods folder, with a sync script that omits client and render-only mods.

Managing GPU memory

Setting a lower memory budget reduces peak VRAM use at the cost of slower generation, for systems where GPU memory becomes tight.

Who it’s for: Server owners who run NeoForge 1.21.1 dedicated servers on Windows and want this terrain generation without a client install. Players only need a standard vanilla client to join.

Questions

Does NeoTerrain Diffusion need to be installed on the client?

No. Players join without it, since only the server has to run the mod.

Which NeoForge version does the port target?

It targets newer builds of the NeoForge 1.21.1 line, as the latest file is published for 1.21.1.

What hardware does the Windows build need?

The Windows build uses DirectML GPU inference, and it warns when CUDA is missing. CUDA is required for the Windows server build.

In the catalog

NeoTerrain Diffusion is one of 8,515 World generation mods on ModsFinder, and one of 4,175 World generation mods for NeoForge. 32,366 mods support Minecraft 1.21.1.

World generation mods8,515NeoForge modsMods for 1.21.132,366

Similar mods

Biomes O' Plenty1.7.10 – 26.3Cobblemon1.19.2 – 1.21.1Terralith1.18.2 – 26.3YUNG's Better Nether Fortresses1.18.2 – 26.1.2Dungeons and Taverns1.19 – 26.3Yeetus Experimentus1.18.2 – 26.3

What the author says

This port currently supports server-side use only. It is intended for a NeoForge dedicated server. It is not currently a complete client-side replacement for the Fabric mod's world-creation flow, client UI, or single-player setup.
cblegoboy, on the Modrinth page

Official listing

Owner
cblegoboy
Published
2026-06-14
Updated on Modrinth
2026-06-14
Facts verified
2026-10-15

Tags

World generation
Open on ModrinthCompare