Sorry, this is my first post so chances are I'm doing something wrong. But I've been playing Don't Starve for a while now, and I was watching a Youtuber's Don't Starve videos, and the corners of his in game screen are getting darker and darker. I thought it has something to do with insanity, but his sanity was almost full.

Does anyone know what it is? I tried looking it up but I can't find anything, and I'm going crazy trying to find out what it is.

Thanks!

@feathers_colgat:

Your sanity may almost be full but if you are in an area that causing your sanity to drop the darkness will begin creeping in. For instance if you are in a grave yard digging up graves then your sanity will drastically drop if you do it too long. Try to mix up your activities, go to different biomes, and most importantly keep picking flowers. Make a garland which protects against sanity drops. If eyes and chattering noise begins to appear in the darkness you are about to go insane.