I recommend using st_new_horizons, st_new_horizons_music & st_new_horizons_ui_federation respectively.Ĥ: Place each mods folder into Documents\Paradox Interactive\Stellaris\mod. You can only have one active at a time but you can have them all installed.Ģ: Extract each mod using whatever program you want. Note: I recommend the Federation UI, but there many different UI's available including a general UI. I've used this site a few times now with no issues. I recommend but you use it at your own risk. This is a simple guide on how to install the Star Trek New Horizons mod:ġ: Download the main mod and sub mods from Steam using a third party website.