Hello, i wonder if you have ever heard of Slender, its a game created by a student, but its insanely good.
http://www.slendergame.com/
Its a short game ( can be finished within 30 mins ) but its so goddamn scary!
I've played Amnesia and that is nothing compared to this.
For some small footage on the atmosphere of the game youtube or look below
http://www.youtube.com/watch?v=AcZ7m_GZNW4
If you decide to play it of if you may have played it already, tell us some nice things that happend there! ( without spoiling to much ofc )