Is it somewhere in Calling you enjoy? A chapter that you want to play again and again? Somewhere in the game you think ''Wow! This was awesome!'' or ''Sh*t! That scared the sh*t out of me! This really makes the game!''.
Something I love with the game is to find new stuff that happenes. New ghost that just are there for a second and then gone. Like the Shadow Ghost in a classroom. Or the ghost that comes out from the poster. ^.^