Generate your first island
Open Crucible Heightmap and it immediately generates a random procedural island, so you are creating terrain the moment it launches. Every island has its own unique seed, and you can adjust terrain using simple sliders, combine multiple islands, and export a true 16-bit heightmap ready for RustEdit in minutes.
What are the basic controls?
Section titled “What are the basic controls?”- Conjure: generate a brand new procedurally random island with a unique seed. Click the button or press Space to roll a new island. Keep rolling until you land on a shape you like.
- Seed: each island has a unique seed. Type or paste a seed to reproduce a specific island exactly, or save the ones you like to your seed library. Seeds are portable, so you can trade them with other map makers.
- Sliders: shape the island’s terrain with intuitive sliders for size, shape, height, buildable ground, cliff sharpness and more. Adjust any slider and watch the live 3D preview update in real time, so you see exactly how each change affects your coastline and terrain.
- Map size: pick your Rust world size (1k to 6k). This sets the export resolution for RustEdit: 513, 1025, 2049 or 4097 pixels. See map sizes and resolutions for guidance on which size to pick.
A good first workflow
Section titled “A good first workflow”- Pick your map size first, since it frames everything else.
- Randomize until you land on a shape you like.
- Nudge the sliders to refine the coastline, height and terrain.
- Save the seed if you want to keep it. See save and share seed files.
- Export the RAW and import it into RustEdit.
Want more than a single island? See combine island seeds.