Well,as title says,lets roll with some good single player horror games.
My favs so far :
Outlast :
https://www.youtube.com/watch?v=F80Wv66GYSs
Outlast: Whistleblower :
https://www.youtube.com/watch?v=WRN4Y5CU_xA
Alan Wake : (Fan trailer and best one)
https://www.youtube.com/watch?v=VrOctYqaSno
Call of Cthulhu: Dark Corners of the Earth
https://www.youtube.com/watch?v=AfQ-Xqt-d0A
Cryostasis :
https://www.youtube.com/watch?v=Lv7iFzGMQAY
DreadOut :
https://www.youtube.com/watch?v=SWQAHcwcCE8
Silent Hill 4 - The Room :
https://www.youtube.com/watch?v=bKfdpwl5Vtc
The Evil Within :
https://www.youtube.com/watch?v=Zc-jvqJV4SI
Dying Light :
https://www.youtube.com/watch?v=Vh6U1dnTVg4
and the first horror style game i ever play back when it's released.Still remember the chills i had on the room with dancing ghosts, huhu..
Alone in the Dark I : (original AitD 1992)
https://www.youtube.com/watch?v=z22DhbOZMbU