A plugin for RPGMaker MV: Creates an extra layer that darkens a map and adds lightsources!
Support and questions can be asked on this forum: http://forums.rpgmakerweb.com/index.php?/topic/49339-terrax-lighting-system/
The plugin (complete with demo) can also be downloaded here, http://mvplugins.com/plugin/Terrax/Terrax%20Lighting%20System
Because the zip contains java-script files some overactive virus/mallware scanners give warnings, thats why its also as plain text on github.
Terrax.