Let me start off with, MY GOD THIS SCARED ME! I actually played this one live and it still scared me with a live audience. It builds such a great atmosphere. More than that it creates so many questions, and all I want now is the lore of why.
The boy or is it a doll, I'm nit sure, but the mechanic of it stopping and going by light is a great mechanic and panic inducing. I also noticed the weeping angle aspects of the dolls and mannequins. The sfx are tight, and it's not difficult enough that you can't escape. My only question is... What happened to Mark? Definitely recommend. It's the first game in the video above. So download it and try it.
It's worth it.