A simulation, not a ghost detector
Each case is a short, self-contained mystery with locations to search, witnesses with their own reasons for what they say, and evidence that can be read more than one way. Some cases have a supernatural explanation within the fiction, and some do not. Part of the job is telling the difference.
This is a fictional game. It does not detect anything and does not offer real paranormal investigation services; its cases, places and people are invented.