How dark the night is
Intensity of nighttime darkness — the value players talk about most.
scum.NighttimeDarkness=0.000000
What does this setting do?
The higher the value, the blacker the night. 0 is the brightest setting, where you can still make things out without a light source; 1 is total darkness where nothing works without a flashlight, torch or night vision.
Contrary to what many expect, a freshly generated file contains 0 — SCUM ships the bright variant. Anyone who wants the atmospheric, pitch-black night has to raise the value themselves.
In practice this value decides whether night vision is a luxury or basic equipment. From roughly 0.6 upwards a light becomes mandatory — and therefore a giveaway, because any light source is visible from far away. For PvP servers that is precisely the appeal.
Which value suits my server?
0 to 0.3. Nobody is held back by missing equipment.
0.5 to 0.7. Light becomes a choice between seeing and being seen.
0.9 to 1.0. Without preparation the night ends in a standstill.
What to watch out for
What is still visible on your screen is already black for someone else. Ask in chat or on Discord after a change instead of trusting your own impression.
Fog and high darkness together remove nearly all visibility. Change one of the two, not both at once.