Garry’s Mod is a sandbox mod for the Source Engine. Unlike normal games there aren't any predefined aims or goals. Players are given tools and are left to entertain themselves. The player is in a world where objects can be created and destroyed on demand. Where people can be created and destroyed with the click of a mouse. A world made for him. A world he made.
A horror pic based of games like Amnesia and Penumbra
What is this, I don't even...
Afraid of Monsters: Deleted Scenes.
ummmm they hunger source?
Nope, looks like a AoM thing to me, get it here: Moddb.com