this is definitely up there, that fucking monster always on your ass is pure anxiety fuel. The best way to play is trying to keep your first partner unscathed, ie. a hitless playthrough. Makes you shit your pants when you accidentally run into the guy and have to frantically turn around and leg it

Siren is the scariest PS2 game, more than both SH and FF. Shame the game is so frustrating that it sometimes overshadows the fright, because they really nailed the Japanese horror atmosphere.