One of the best horror movies released in 2014 was The Purge: Anarchy, a sequel to The Purge. Although it didn't receive the best reviews (and was missing Ethan Hawke star power), it was still very profitable, somehow better than the first part, and best of all—spawned various new costume ideas for Halloween.
If The Conjuring wasn't scary enough for you, once you find out that the haunted doll in the movie was based on true events, you'll cry. At least, that's what I did. I mean, my girlfriend.
Michael Myers from the Halloween movie franchise might be one of the scariest villains ever to be depicted on screen. He is a popular Halloween costume choice, but most of the newer masks and other costume products made of Mike Myers are not very faithful to the original—or they're extremely expensive.