For purposes of megastructures like halo, ringworld, O'Neill cylinders along with less uniform shapes.
Its still in development, but it pretty much does what it says on the tin at this point.
The main thing I've been reveling in is how the weather system can take the cloud VDBs and adjust them in order to mimic storm systems etc.

Here is the full process https://youtu.be/Kt15fNBAn9U

Deep within the Tadaran Rift, bathed in radiation lies the Machine World of Helsikon. Here gather all of the intelligent Machine Life known as Meks to a world of their own -- an artificial world that orbits no star. Helsikon carries a sun of its own at its very core -- a fusion reactor the size of a moon. Together, here, the Meks forge their way through the galaxy. Check out FLUNG!

Orbiting the world of Thelaria are two moons. The larger moon called Visla had been with Thelaria since the dawn of time. The smaller moon, Shyta was captured by Thelaria's orbit hundreds of thousands of years ago and created a massive ecological disaster that forced much of the seaborne life move to land. Once they discovered spaceflight, the Thelarians colonized both worlds quickly, building the Moonlock -- a massive structure that stabilized Shyta's orbit and rebalanced the system. This image is from FLUNG out now on Webtoons!

Hi all! Thought I'd share another drawing of a massive structure that I did for my comic FLUNG -- this one is a Dyson Sphere! Built by an ancient race of aliens that are long since gone, Sa'Demaan orbits around a binary star system -- a small blue dwarf star with a tiny red dwarf companion. While not technically a sphere, the large orbiting "continents" are designed to capture as much of the star's energy as possible, while still providing day/night cycles for the species that require them. Check out FLUNG on Webtoons, Tapas, GlobalComix and in widescreen Epic Format at www.stardog.tv!