S4C Rock Generator from Shift4cube adds procedural rock creation to Blender, powered by Geometry Nodes. Click Add Rock and you get a rock without manual sculpting, ready to shape further through the add-on's controls.
You can start from a Cube, Icosphere, or UV Sphere base mesh, then adjust shape, scale, detail, roughness, noise, distortion, and more. Because everything runs through Geometry Nodes, the workflow stays non-destructive and every setting can be tweaked at any time. The add-on auto-assigns the included procedural rock material and applies Smart UV Project for texturing. Controls live in a clean panel in the 3D Viewport under the N-Panel, S4C Rock.
The package includes the add-on as a ready-to-install .zip, an assets.blend containing the Geometry Nodes setup and procedural material, plus documentation and a quick start guide. It runs on Blender 4.0 and up, works with Cycles and Eevee, and is released under the MIT license.