If you played Silent Hill then you should now by now that the main character Heather a 17 year old girl is pregnant with the God of the city which turns out to be "Lilith"
Heather is part of Alessa, the original girl meant to give birth to the town god. The plotwist was that the town mistook Alessa for a vessel for god and not the god herself, this cause a severe torture session in which a cauldron exploded and severely burnt Alessa, making her live the rest of her days in the hospital and sedated by a drug that gave her twisted nightmares that later materialized into the town, consuming it. The town's cult, a doomsday christian sect, seeking to control Alessa, tries to perform another rite, but Alessa fools them and splits herself, gives birth to
Cheryl which is no other than Heather.
The monsters of Silent Hill, obey the god, seeking out punishment to those who are sinners while leaving the innocent apart, this is why sometimes children can be seen playing and then disappear into the mist, once again returning to the real world to continue their daily lives in Silent Hill.
Currently, the cult is trapped in purgatory for what has done and its creatures torture maul and hunt the cultists and their children children till justice is repaired.