Obscura is a First Person Puzzle game using the Source Engine. The concept of the game is of an amnesiac going through his memories solving gaps/blocks. He does this by using psychological-tied mechanics that allow players to have objects affect one another in various ways.
So here's our trailer showing off a bit of the mechanics, most of the major levels, and some of the story going on in the game. The music is also not just there for effect since the game uses other songs from Nine Inch Nails Ghosts I-IV. Stay tuned for videos on mechanic demonstration and puzzle demonstration.