Being isolated in an underwater research facility -- alone, it seems -- is a terrifying prospect. In the midst of all this madness, you have to figure out why you're here and what happened before. Soma is very clue-driven and puzzle-driven, but you have to master these tactics while avoiding disturbing creatures. Soma really brought home the effect of psychological fear. It's scary, it's unsettling, and it makes you paranoid during the game.