There is a new release of Acropora that takes noise to a new level. You can import terragen/worldmachine or any other heightmap for that matter and then:
- perturb it with volumetric, perlin, fractal noise,
- add regional constraints
- carve into it
- add cave structures, lofts, grooves, layers,...
- export to common mesh formats
- export voxel space (RLE format also supported)
- and much more.
Cheers,
Thomas