A game like sardines is scary, not so much for the hider but for the seekers. It's scary because you lose your companions and the whole world creeps up quiet and you slowly realize you're going to stumble upon a secret place where everyone will jump out at you. And then, when you are the very last seeker, you start to wonder if you're the only person in the world. If the hiding place somehow sucked up the players and the last one has to decide to run away or get sucked up, too.