Thanks, glad you liked it! ;) Do you mean a fog of war like shadow or shadows as older games like Nox (if you ever played that one) applied them?
More like the fov for the player:P
These "flashlight arena" from early metal gear solid games, it would be nice if the "alien" you shone your flashlight on would jump on you (or some reversed weeping angels from doctor who)
fog of war would be genius for exploring one :D