Survival games wouldn't be worth their weight in gold if they couldn't produce an unsettling atmosphere. Fear triggers survival instincts, so without the eerie atmosphere to amp up the scare factor, survival games can feel less like a near-death experience and more like a casual Sunday drive. Some of the best games ever made, no matter the genre, thrive on their immersive gameplay and breathtaking scenery, and survival games — for all their visual majesty — benefit from environments that instill a sense of dread in players.