Everything above is perfectly possible. I get the idea that a lot of people miss the concept of this asset. Its primary purpose as I could see, was to provide a method for generating procedural planets, with an LOD system. And the asset does exactly that. Everything else is extra, and most of it is only for demonstration purposes. Does the asset have a gravity system? Yes, but it is not a great one, so I scrapped it and wrote my own. Does it have a system for having a character move around on the surface? Yes, but again it is more of a demonstration feature, to spark the interest of the people who use the asset, so they can know what is possible. I wrote my own character FPS system, along with a method for calculating atmospheric density and a pile of other stuff. If you expect this asset to do everything for you than chances are you either are not experienced with unity enough, or you need to sharpen your programming skills before attempting whatever project you are struggling with that uses this asset. This asset does not push Unity, I can run with great terrain quality and be getting excellent fps, not to mention thousands of rigidbodies moving around constantly. More of a space age science fiction Rust to be honest.