Anybody know what horror games are coming in 2013?

[The Rock Worm]

Perhaps Tower22, but I don't know when it will be released, it's also possible in 2014 or 2015.
But it's definitely worth to follow this project.

And Outlast.

Tower22 is worth following, but like you wonders when it will be released.

Outlast looks challenging to play, considering you have to record the nightmares there for the world to know the danger while those dangers are after you! Hopefully it won't be like 'Blair Witch Project' (never saw it but didn't appeal to me, the shaking and just knowing only the camera survives kind of spoils it).