Dead of Darkness is a 2D survival-horror action-adventure with cosmic horror influences from developer Retrofiction Games. The game places players in the role of private investigator Miles Windham in 1985 England, who travels to Velvet Island to investigate his daughter's death. Upon arrival, Windham encounters strange resident behavior and escalating hostility, forcing him into a fight for survival.
The narrative unfolds across multiple layers, introducing over 15 characters with their own stories tied to the island's secrets. Gameplay emphasizes challenging survival mechanics, with scarce resources and a limited inventory demanding careful planning. Mental state degradation leads to intense hallucinations that distort perception. Players will confront 13 distinct enemy types and must utilize detective skills to find clues, solve puzzles, and uncover hidden areas.