Fun
Enjoyable. It mostly comes down to properly timing haunts and not a lot of decision making needs to be done. The paranormal investigators are a good idea, but since I could float through floors, they were easy to avoid.
Aesthetics
Simple pixel art style that has some charm. Perhaps could benefit from a more complementary color palette, but the art all matches.
Music
Good music. Fits the game and doesn't interfere.
Sound
The slow cello? sound during haunts was a grating after a bit. Perhaps some minor pitch fluctuations could be used to make it more itneresting.
Mechanics
The ghost movement speed and haunt speed felt really slow. I would have preferred to go a bit faster.
The haunting system was cool though. The paranormal investigators, cats, and nervous people were all a great ramping system.
Story
You are a ghost and need to get these people out. Simple concept, but it works.
Theme
Matches the gamejam theme. You spend the whole game as a ghost. Haunting items also fits with being a ghost. The game feels as if it was built around the ghost idea, rather than have ghosts slapped on top to meet the restrictions.