Silent Hill 1 for the playstation. Its not really that scary in and of itself, but my friend and I were playing it late one night in his dark basement (his idea), and he was about to go into this church when for some reason he turned the character around real fast and there from out of nowhere was this little demon thing with a knife. I know that it doesnt sound scary but for whatever random reason my friend and I jumped out of our skins. We still laugh about it today.