Monsters that like the dark

[tamercloud]

I have an enemy idea that would offer a horror element to the game. What about monsters that roam in dark tunnels? This would give players more incentives to create lit areas. You could even have it so that it is harder to see in dark tunnels so there is a sense of mystery about where the monsters lurk.

Of course, if the players have to light all tunnels, an adjustment would have to be made to lower the taxing cost of lighting.