Portal: Timestall is a free Portal 2 mod that follows the story of a test subject that is a part of Apertures lost time travel experiments. After something goes wrong you are lost in time and must advance through a new era of Aperture Science to stop time from collapsing. Timestall features a campaign that rivals Portal 2s in length, providing a fully voice acted story and brand new time based mechanics. Solve all new puzzles with the help of time slowing and time pausing while trying to figure out how to get back home and stop time from collapsing in on itself.
Our 3D Rendering Department sent this one over earlier today. Told me it was made in "Source Film Maker". Safe to say they are all never coming back, because I fired the whole department. Why did we even get a 3D Rendering Department?