CUSTOM OBSERVER INTERFACE INSTALLATION - STARCRAFT II ===================================================== 1) Download an .SC2Interface file. 2) Put the file in the directory: C:\Users\%USERNAME%\Documents\StarCraft II\Interfaces\ "Interfaces" folder must be created manually. 3) Restart SC2. Go to Menu -> Options -> Gameplay Select "Observer Interface" at the bottom right and pick the installed interface. 4) The new interface will now show up any time you watch a replay or observe a game on that computer.