In order to play When the Darkness comes on Windows with maximum graphics settings, you need a computer with a configuration no worse than the following
OS *:
Windows 7,8,10
Processor (CPU):
Intel Core i7-2600 and up, or similar.
Memory (RAM):
2 GB RAM
Graphics Card:
Nvidia Geforce 1060 and up, or similar.
DirectX:
Version 10
Storage:
550 MB available space