What makes snakes so scary? The cold eyes. The way you can get too close to one before you see it. The idea of one striking you with poisonous fangs or squeezing you to death. The slithery way they move, often more quickly than you would have imagined. The idea of one dropping on you from a tree, striking out at you from a dark place. Snakes are cool and evil! They will make your game more interesting cos they can infect and kill your players with their deadly poison.