Run the Stellaris launcher Go to the "All Installed Mods" Click "Upload Mod" Click "Create Mod" Fill out the fields with whatever you want and click "Create Mod" to save your mod locally (Optionally) ...
Add a day-night cycle! This plugin keeps track of time of day as the cycle advances, auto-updates variables and switches based on time of day, and applies screen tones to areas marked as outdoors.