Dreams on PS4 had an SDF modeler, but I’m not sure if the runtime was SDF. Now that I think about it, the rendering engine had a Gaussian splat look to it years before that paper.

The Dreams team made a nice talk at SIGGRAPH 2015, if you want to check it out:

* Slides (good notes): https://advances.realtimerendering.com/s2015/AlexEvans_SIGGR...

* video: https://www.youtube.com/watch?v=u9KNtnCZDMI

They discuss Dreams in the video and even explain Brick rendering.