In the map vault, you will find every map available for Forged Alliance. All maps downloaded via map vault are saved in this folder:
C:\Users\%UserName%\Documents\My Games\Gas Powered Games\Supreme Commander Forged Alliance\Maps
You can search for a map by the following Using the filtered Search
This Allows you to filter down to the specific maps you are looking for.
This pop up when you click the button allows you to look down the list and any maps you no longer want you just click on the bin icon next to it and the map is uninstalled.
For Information Uploading Maps please check out the Rule's Here
Here you can see Some basic Information about the map
To Download left click on the map. Here you will get a new Window open.
In the top right-hand corner of this window, you have the option to Install the Map. Once you click that you can then click on the Create Game Button and it will set you up a game with that map selected.
The Mod vault is a feature in the FAF lobby which allows you to easily find and manage mods for Forged Alliance. Mods are saved in this folder:
C:\Users\%UserName%\Documents\My Games\Gas Powered Games\Supreme Commander Forged Alliance\Mods
If your username have uncorrect symbols, mods will be saved instead in:
C:\ProgramData\FAForever\user\My Games\Gas Powered Games\Supreme Commander Forged Alliance\Mods
It can be accessed through the "Vaults" tab in the lobby and contains a large number of mods.
To find a mod, simply type in its name into the search bar, and if it doesn't appear, press the "Server Search" button which will look through the whole mod list.
There are two types of mods; Sim mods and UI mods.
Click on Manage Active Mods Button to open the selection.
You can select from the top UI or SIM. As long as the Mod is highlighted in blue it is selected.
UI mods are mods that are activated on a per-person basis and have no effect on other players in the game. As the name implies, they are usually changes and enhancements to the UI and can make playing the game easier. UI mods should never make a game unrated.
Sim mods are mods that affect the game itself and are activated on a per-game basis. They range from simple mods which adjust one or two values to overhauls of the game, such as Nomads and Black Ops. Most Sim mods make a game unrated. See When is the gamerated?