It can affect your perception of the battlefield and add a level of uncertainty to combat encounters. It affects how easily you spot your enemies and how easily they can spot you, which should be critical for especially thieves and rogues. It can provide an environmental challenge that can be combated with torches, spells and magic items. Yeah, but a forest in autumn during a new moon when there's no snow yet can be pretty damn dark.ĭarkness can have a huge influence on gameplay, especially in RPGs.