Terrain Erosion Simulator

Let it rain on your terrain: upload a grayscale heightmap (or start with the demo cone) and simulated water droplets carve gullies, ridges and sediment fans into it, like the erosion nodes in Gaea or World Machine. Hydraulic erosion plus optional thermal weathering, with a live 3D before/after preview and 16 bit PNG export. Everything runs in your browser, your file never leaves your device.