Fantastic additon to the "ghost hunting" game genre. Builds very well on established norms for the genre regarding the kind of evidence you'd expect to find, but has its own unique take on what exactly to do with the information and what else to look out for.
The gameplay feels smooth.
The ghost types are unique and identifiable through alternate means, allowing an experienced player to show off their prowess.
Most, if not all, pieces of evidence have some way of semi-forcing them to happen within a reasonable timeframe, meaning you won't always be stuck playing the waiting game for the ghost to do something of note. Some luck is of course still involved, but only about the amount you'd want to keep the game interesting.
The developer also seems very dedicated and down to earth, and is quite open to feedback, so the game is only getting better.