CoC and WoD, as far as I'm concerned, are the two biggest horror games in the market. They both have their very own unique sorta appeal. What is it that you like in the two games? Which one do you prefer? Do you think that they're both the best in the horror genre?
But that's not quite correct. If you're playing WoD without any of the 'add-on systems' (like Vampire, Werewolf, etc.) then everyone is a normal human.World of Darkness is "you play the monsters in a dark world", and it doesn't quite work as a horror game to me. I'm really not fond of how the world is presented.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.