No Terrain addon - Astroneer

Prevents all natural terrain from generating to allow building of lag free custom maps.

Installation

Automatic

I recommend you use AstroModLoader, which you can find binaries for at Github.com, to manage this mod with a user-friendly GUI as well as to seamlessly ensure mod compatibility with most other mods you may wish to install.

Manual

On Steam: Place the .pak file in the %localappdata%\Astro\Saved\Paks directory (create it if it does not already exist).

On the Windows Store: Place the .pak file in the %localappdata%\Packages\SystemEraSoftworks.29415440E1269_ftk5pbg2rayv2\LocalState\Astro\Saved\Paks directory (create it if it does not already exist).