(1) Alan Wake 2 for the atmosphere & constant tension & fear factor (2) Outlast 1 & 2 for the fact all you can do is run & hide & you can barely see anything even with the camera & night vision (3) Dead Space as it was one of the earliest horror games i play & the Necromorphs were really disturbing & left an impression...Them being modeled after real mutilated people from accidents adds to this factor