Having struggled myself to install the mod on Epic Games, I decided to write a quick tutorial.

• Close the Paradox Interactive launcher and the game itself while doing all of this.
  
• Make sure the mod or any mod for that matter is compatible with the game's version of course.
  
• This is what the complete folder/file tree structure should like at the end: tree structure[pastebin.com]

Make sure the root mod folder exists. If it does not, create it yourself
C:\Users\user\Documents\Paradox Interactive\Europa Universalis IV EGS\mod\

❗ "user" is your PC username ...
https://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=3583149982


Download the Steam Workshop files

Grab the url of this Steam mod then paste it in any of those two websites

➜ {链接已删除}http://steamworkshop.download] steamworkshop.download
➜{链接已删除}https://steamworkshopdownloader.io] steamworkshopdownloader

🚨 Note that you should always verify the files you download online, even if it's generated based on a trusted link like Steam. I've used those two websites myself and haven't encountered any issues personally. Use any website your most confortamble with.

It will download a .zip file. In this case "2146396184.zip".
(This number refers to the Steam Workshop item ID and allows for automatic update when you're subscribed to the mod. But it only works on Steam)

Once downloaded, place it under the root mod folder.

https://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=3583147434


Extract that .zip inside the root mod folder. Delete the .zip and just keep the extracted folder

That folder contains all the usefull files for this specific mod to work correctly, including descriptor.mod.
You can rename the folder however you wan't. Avoid complex symbols as this could cause issues. Let's keep it simple and go with "Bigger_Stellaris".

https://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=3583151444


Now if you go inside that folder you will see a file named "descriptor.mod"
Open it and edit it's content exactly like this to avoid any issues. Then save it.

https://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=3583163605


Copy the "descriptor.mod" file and paste it under your mod folder
Rename that file exactly like the specific mod folder. So "Bigger_Stellaris.mod"
https://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=3583165634


Now open this file and edit it's content exactly like this to avoid any issues.
Then save it.


❗ replace "user" with your PC username ...
https://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=3583170697


Open the Paradox launcher from your Epic Library
You should now see the mod under your Mod Library.
If not make sure to toggle off "Custom Paradox mods location" under Game Settings > Mods Management
https://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=3583173771



Create your personal playset and name it however you like. In my case it's "My Playset"
Then go to the Playsets section, select your personal playset and add the mod to it.
It should now appear there aswell. Make sure to enable it.

Go to the homepage and make sure to select the playset. Press "play" and enjoy!

https://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=3583175975
https://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=3583177351
https://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=3583204065&fileuploadsuccess=1
------------------------

Additionnal notes:

I would also suggest you have a look at this wewbpage for additional explanation if you want to: https://eu4.paradoxwikis.com/Mod_structure#Mod_folder

‼️ It's possible that the name of your launcher inside the folders is "Europa Universalis IV" without "EGS", it's basically the same thing but it's important you modify your paths accordingly!