Dead of Darkness is an immersive survival-horror action-adventure game set in 1985 England, where players assume the role of private investigator Miles Windham. Tasked with uncovering the truth behind his daughter’s mysterious death, Miles travels to Velvet Island, only to find that the island's residents exhibit increasingly hostile behavior. As the tension escalates, players must navigate a complex narrative filled with over 15 unique characters, each harboring dark secrets that intertwine with the main storyline.

The gameplay emphasizes survival with limited resources and a restricted inventory, challenging players to plan their moves carefully. With intense hallucinations that blur the line between reality and illusion, players must contend with 13 relentless enemies, employing strategies to either fight or evade them. The game also encourages exploration and detective work, as players search for clues to unlock hidden areas and secrets, enhancing the overall experience of mystery and dread.