Sinister Entity is a Third-Person horror game, the events of the story will take place in the era of the eighties in Egypt, the hero of this story is a girl named (Salma), the daughter of Dr. (Adham) the archaeologist, Salma’s mother died in a strange accident, and two weeks after the death, Salma was shocked by what she saw, her mother came back to life and the demon has possessed her. Salma's task will be to get rid of this evil entity, after discovering that she will not be able to get out of the house. The game contains many puzzles and mysteries, and the game will also contain escaping and hiding from this evil entity.