WIN10/8/7 – C:\ Users \ \ AppData \ Roaming \ Red Alert 3 \ Maps The location however depends on your operating system. Once you’ve extracted the map you need to copy the whole map folder to your RA3. Maps on this website are compressed with WinRar so you’ll need to extract them after download. You’ve successfully downloaded a map! Great! Now How to add a map to your Red Alert 3 installation and what to do with it to make it work.įirst you, obviously, need to download a RA3 custom map.