Awesome! Was sold before the trailer, somewhat less so after it, but this could be really great. I predict a lot of RPG players whose first instinct is to explore everything being driven insane.
That is refreshingly creepy. I tend not to go for most horror games as they aren't cerebral enough to hold my attention for long. But Lovcraftian stuff has the whole "You do not exist in enough dimensions to comprehend what is going on" angle which really does scare me.