Heightmap Level Generator

Free procedural terrain and heightmap generator for Unreal Engine, Unity and Godot, running in your browser on WebGPU. No install, no account.

Generates a 16-bit heightmap at 0.5 m per pixel (1024×1024 for a 512 m map, up to 2560×2560) with a road network, towns, cliffs, hills, mountains, erosion, rivers and lakes, in four biomes. Tweak everything live, walk through it in first person, compare seeds and export for your engine.

• Unreal Engine landscape: 16-bit PNG or .r16 with the import values in the metadata
• Unity terrain: .r16, Godot Terrain3D: 16-bit PNG
• Splatmap, slope, normal, curvature, flow, road, town and water masks, 16-bit water level, color map
• Layout JSON with roads, towns, rivers and lakes for PCG, Houdini or your own scripts
• glTF mesh with color texture for three.js and WebGPU scenes

Needs a browser with WebGPU: desktop Chrome or Edge 113+, Safari 26+, Firefox 141+ on Windows. Source, documentation and screenshots: github.com/m-w-marker/heightmap-level-generator