I thought the whole point was that it was an "in-game style" real-time rendering of somebody using keyboard/mouse to walk around inside the virtual environment. That's what makes it impressive and noteworthy.
Am I wrong about that? If it's a pre-rendered animation, it's certainly not state-of-the-art.
Am I wrong about that? If it's a pre-rendered animation, it's certainly not state-of-the-art.