If you want to fly the Brandenburg W12 in a realistic World War One flight sim, you need to get Rise of Flight. As far as I know this is the only flight sim where you can fly the Brandenburg W12, but Rise of Flight does a terrific job of simulating realistic flight and air combat in this cool plane. Just get the addon from Rise of Flight’s website once you have the flight sim installed and you’ll be good to go. Happy flying!
Video of the Brandenburg in flight below: