Heightmap Level Generator vs World Machine

Heightmap Level Generator creates procedural terrain and heightmaps in a browser for Unreal Engine, Unity and Godot. Its GPU-based generation uses WebGPU compute shaders and WGSL. Outputs include 16-bit heightmaps with features such as cliffs, hills, mountains, erosion, rivers, lakes and a raised border ring. It can also generate connected roads, towns, map exits, road grades and embankments around water, with temperate, steppe, desert and snow world biomes. Users can adjust settings live, compare 12 seeds, preview a 2D map and 3D mesh, and walk through terrain in first person. Exports include engine-specific terrain formats, Web or three.js formats, heightmaps, splatmaps, masks, water levels, color maps, layout JSON, glTF meshes and metadata JSON. Road, town and water masks and layout data can support PCG, Houdini and custom placement scripts. The free project supports share links, presets, JSON save and load, and undo and redo. Online use requires a WebGPU-capable browser; local use requires Node.js and such a browser.

World Machine is procedural 3D terrain-generation software for artists creating realistic or stylized landscapes, including game, film, and visualization work. Its node graph offers more than 100 devices for terrain, erosion, rivers, masks, materials, and outputs. Simulations cover flow-based and thermal erosion, snow accumulation, river channels, lakes, and coastal erosion; Dragontail Peak adds terrain with overhangs, cliff faces, and caves. Exports include heightfields, meshes, masks, and PBR textures in standard formats, with listed file types including RAW, EXR, TIFF, PNG, TER, OBJ, glTF, and GLB. Compatible tools named by the maker include Unreal Engine, Unity, Godot, Blender, Maya, and Cinema 4D. Professional and higher editions support tiled builds for worlds larger than memory and can resume builds after interruption. The free Basic edition has the Indie toolset but caps each output asset at 1025×1025 pixels and is limited to non-commercial use. Paid plans are Indie at $119 a month, Professional at $299 a month, and Studio Site at $1,999 a month. It runs on Linux, macOS, and Windows.