If you've subscribed to a mod, but it isn't showing up in your list of mods, it is a Steam problem and not with the mod per se. Here is a suggestion on how to fix the problem (originally provided by user @kurinkton, passed on by @NixWarumIsSo!):


1. Close the game if running and open your Steam install directory
In my case this is C:\Program Files (x86)\Steam\

2. Look for the "userdata" folder, open it, and there should be a folder for which the name is a long number (probably your steam user id number or something). Open that. This folder will contain all cached/downloaded user content for all installed games.

3. Look for the "ugc" folder, and open it. There should be a "referenced" folder. Open that. There will be a number of folders, with long numbers equal to the number of mods you have subscribed to on Steam.

4. Open each of those and copy the *.civ5mod files there to: Documents\My Games\Sid Meier's Civilization 5\MODS

5. Launch the game and click on Mods. At first it will show none installed, but after a second or so it will start showing progress bars filling and emptying for each mod you copied. After that (should take only a few seconds or a minute or so) you will have your list of mods back.


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If for some reason you're still having issues, you can always google "Civ5 steam mod not appearing in mod list", and pay close attention to any suggestions in the civfanatics.com results.