- Home
- Game Map Generators
- Heightmap Level Generator
Heightmap Level Generator
What it is
Heightmap Level Generator is a free browser tool for making procedural terrain and heightmaps for Unreal Engine, Unity, and Godot. It uses WebGPU compute shaders and WGSL to generate 16-bit heightmaps with terrain such as cliffs, hills, mountains, erosion, rivers, lakes, and a raised border ring. It can also build connected roads, towns, map exits, road grades, and embankments around water. Four biomes are available: temperate, steppe, desert, and snow world. Users can adjust settings live, compare 12 seeds, preview a 2D map and 3D mesh, and walk through the terrain in first person. Exports include engine formats, Web or three.js, heightmaps, splatmaps, masks, water levels, color maps, layout JSON, glTF meshes, and metadata. Road, town, and water masks plus layout JSON are intended for PCG, Houdini, and custom placement scripts. Share links, JSON save and load, undo and redo, and presets are supported. The online version requires WebGPU; local use requires Node.js and a WebGPU-capable browser. The project is MIT licensed, and exported assets can be used commercially.
For and against
For
- Generates terrain and heightmaps procedurally.
- Exports for Unreal Engine, Unity, and Godot Terrain3D.
- Supports live edits and comparison of 12 seeds.
- MIT-licensed, with commercial use of exported assets.
Against
- Online version requires WebGPU.
- Local use requires Node.js and a WebGPU-capable browser.
The verdict
Heightmap Level Generator provides terrain generation, previews, and exports for several engines and related workflows. Check the WebGPU requirement before using the online version.
Who it suits
This tool suits game developers and other creators building procedural terrain for Unreal Engine, Unity, or Godot. Its masks and layout files can support PCG, Houdini, and custom placement scripts.
Plans and prices
Free
browser-based generator · no install · no account
Read 15 Oct 2026 · github.com
On the record
- API and SDK
- The published material documents no network API or SDK; extensibility is through source code and exported files.github.com · read 15 Oct 2026
- Automation integration
- Road, town and water masks plus layout JSON are intended for PCG, Houdini and custom placement scripts.github.com · read 15 Oct 2026
- Auxiliary exports
- Exports include splatmaps, slope, normal, curvature and flow masks, road/town/water masks, water-level and color-map PNGs, layout JSON and metadata JSON.github.com · read 15 Oct 2026
- Biomes
- The generator provides temperate, steppe, desert and snow biomes.github.com · read 15 Oct 2026
- Browser requirements
- The hosted tool requires WebGPU and lists desktop Chrome or Edge 113+, Safari 26+ and Firefox 141+ on Windows.m-w-marker.github.io · read 15 Oct 2026
- Documentation depth
- The README documents parameters, export dimensions, coordinate conventions, mask encodings, layout fields and the generation pipeline.github.com · read 15 Oct 2026
- Editing workflow
- It supports live parameter changes, undo/redo, presets, JSON save/load and shareable URLs containing settings.github.com · read 15 Oct 2026
- Engine exports
- Exports include Unreal landscape, Unity terrain, Godot Terrain3D and Web or three.js formats.github.com · read 1 Oct 2026
- Export files
- Exports can include 16-bit PNG or RAW heightmaps, splatmaps, masks, water levels, color maps, layout JSON, glTF meshes and metadata JSON.github.com · read 1 Oct 2026
- Export ownership
- The README says exported heightmaps, masks, layouts and meshes belong to the user without conditions.github.com · read 15 Oct 2026
- Godot and web export
- Godot Terrain3D receives a 16-bit heightmap and web or three.js workflows receive a glTF mesh.github.com · read 15 Oct 2026
- GPU generation
- Terrain is generated with WebGPU compute shaders written in WGSL while controls are adjusted.github.com · read 15 Oct 2026
- Independent description
- The GitHub topic listing describes it as a free procedural terrain and heightmap generator for Unreal, Unity and Godot running in a WebGPU browser.github.com · read 15 Oct 2026
- Independent directory listing
- GitHub's erosion topic page lists Heightmap Level Generator among seven JavaScript repositories matching that topic.github.com · read 15 Oct 2026
- Independent metadata
- That GitHub topic page labels the repository JavaScript and shows it updated on September 13, 2026.github.com · read 15 Oct 2026
- Independent topic tags
- GitHub's topic listing associates the repository with WebGPU, procedural generation, terrain generation, Unity, Godot, Unreal Engine, erosion and WGSL tags.github.com · read 15 Oct 2026
- Interactive editing
- Users can adjust settings live, compare 12 seeds, preview a 2D map and 3D mesh, and walk through the terrain in first person.github.com · read 1 Oct 2026
- Licence
- The source is released under the MIT License, including permission to use it commercially.github.com · read 15 Oct 2026
