I don't remember seeing this before, but it could be on the PiD story page, and it's old.
Video description:
Based off Bungie Studios 1993 game 'Pathways Into Darkness'.
The following gameplay demo was rendered and played in realtime with the Unity Engine.
The prototype was developed in the span of four weeks as a demonstration of my skills for the Interactive Design and Game Development course at SCAD HK.