Spelunky games makes me feel a lot of fear, although it's because of losing progress and not like surreal fear.
If you allow me to cheat a little though, once I had some sort of youtube extension that for some reason would pause videos in other tabs when loaded. Bear in mind this was a time when sounds and videos still autoplayed in browsers automatically.
I opened a video, immediately forgot about it and opened another one. Guy was filming himself while talking and gesticulating, then suddenly he stops while still looking at me and this song starts playing:
This happened because I opened this ost first, but it took longer to load then it interrupted the other video.
I was caught completely by surprise though, and was possibly the only time I genuinely lost grasp of reality for a moment.
ok thank you but it doesnt look like i can edit the first post :c
Don't worry I did it for you. I used [ISPOILER ] instead of [SPOILER ] though because I'm picky