Gaea
QuadSpinner's terrain designer provides graphs, erosion, color, automated builds, and engine-oriented export.
Why use it
It creates convincing mountains, strata, and surface masks quickly, with deterministic builds for multiple resolutions.
Where it fits
Use art, animation, audio, levels, and narrative to make the game easy to read and its world convincing.
What to check
High-resolution builds require paid editions and compute time; visual realism is not playability, so paths, collision, and streaming remain engine work.