Yes, it reminds of The Blair Witch Project and that probably is helping it out in the creep department, but I think it works very well on its own. It sells the movie in such a simple and effective way. I also like the various character posters that were also released.
"Aurora", "Chris", "Richard" and "Laura"
All in all a very good set of images for a movie I had, before today, never heard of before in my life. Well done.