So I had a cool idea i think. What If you can adjust the atmosphere and lighting of a map? So for instance, you could enable fog, and you could adjust the thickness and colour of the fog. You could also adjust the ambient light to either be pitch black (so no light at all in shadows without a light source) or you could have it set to a high value so it would be bright in shadows or areas with no light source. You could also adjust the colour of this, so it could for example be a creepy red in the shadows for an ominous look. You can also adjust the intensity of the sunlight/moonlight. What I mean is that you could adjust a slider and could make the outdoor lighting brighter or darker from the sun/moon. This will work well If you'd like a dark or bright map but the normal lighting is not good enough. You can also adjust other things such as how strong the volumetrics from light sources are, and the bloom and it's threshold.