Shiroberus wrote:I don't understand.
Darkness is Scurry. It makes your humors drain, and Argopelters spawn out there. (Well, so far as we know. There might be other awful things out there with the addition of other tings.)
Also, Rabbits are much more likely to turn into March Hares when they aggro. Good if you want big game or money, more trouble than you want if you just wanted a nice 5 hp chunk of hide and meat.
The pelters are pretty hardcore too, and actively aggro on their own, which is also bad.
If you know about all that, but not about the interface he's showing it's a tool from Ender's Client that tells you about how bright it is.