In the spring of 2014, my ongoing relationship with WorldViz turned into a business case for a short stint of research and development at Ziegler Cooper. WorldViz used the proprietary "Vizard" game engine to run the models from digital architecture models. The workflow wasn't quite ready for large scale commercial work as the model optimization process required the geometry to a low amount of polygons and the yield from Revit was too high and too much rework for office projects.
The research did bring the Oculus SDK1 into the office and everyone enjoyed the initial real demos as a part of the research. Movement was tracked via a Kinect sensor.