-Open Civilization VI Development Tools

-Select Mod Buddy

If you don't have Visual Studio 2013, you may be prompted with 800MB Install (do that).

Create a New File (FILE/New/Project.../)

Select an Empty Mod, and name It however you like (I'd advise to name it the same as your map)

Write something in there...

Delete this .xml file

Create a New Folder and name it Maps

Add existing item

Go to Documents\My games\Sid Meier's Civilization VI\Saves\WorldBuilder

and select your map file

Open Properties of your map, right click/ properties

Go to FrontEnd Actions

Add Action, change the ID section to "AddSEAMAP" and the type to "AddWorldBuilderMap"

Go to files tab and click "ADD", then select your map (Mine is called "Global Warming" don't ask) and click OK

Add 3 Custom Properties:

Save the Map (CTRL+SHIFT+S) and build it to check if everything is correct (CTRL+SHIFT+B)

Go to TOOLS/ Launch Steam Uploader and click Begin


Click "Upload" Button

Choose your map file from \Documents\My games\Sid Meier's Civilization VI\Mods (Its the .modinfo file)

Add your photo and the descrption for the Workshop item

Then click upload and wait a few seconds

To check if your map is uploaded corectly, go to your Steam Profile/ Workshop Items