I found the batman vr game on psvr scariest. It wasnt that scary a premise, but because of the immersion, it was extra. You knew joker was in a cell and you had to Kean in to see. Although you knew he would get you, you had no choice. You had to physically force yourself to be attacked bybsteppibg forwards.
Similarly, the jumping off a cliff to commit suicide in suoerhot vr was quite confronting and scary. I think they edited it out.