Did anybody come up with a definitive solution for those of us who have Steam on the C: drive and who still cannot see the mods? In my case Steam is on C:, I downloaded many mods from within the game menu, installed them exactly as needed by the game, they show enabled in the in game menu, and they show as unzipped files in the MODS folder in the Civ 5 folder in My Games. I even tried copying all the mods over to the MODS folder in the Steam app for Civ 5 and no success. They just plain don't show up in the in game menu. The only success I've had is extracting maps from some of the mods, along with stand alone maps I've downloaded from the in game menu, and manually putting them in the maps folder. Then they show up as an option when I do a customized game.