Dead of Darkness is an immersive survival-horror game set in 1985 England, where players step into the shoes of private investigator Miles Windham. As he investigates the mysterious death of his daughter on Velvet Island, players will encounter a complex narrative filled with over 15 unique characters, each harboring their own secrets. The game combines elements of cosmic horror with a challenging survival experience, requiring players to manage scarce resources and navigate a hostile environment.

The gameplay emphasizes intense encounters with 13 relentless enemies, where players must use strategy to survive. Hallucinations play a significant role, affecting the protagonist's mental state and blurring the lines between reality and fiction. Players are tasked with exploring their surroundings, inspecting items, and deciphering clues to unlock hidden secrets and passageways, making for an engaging and suspenseful adventure.