I'm working on Everything Wrong with Message in a Haunted Mansion. I thought of, like, five questions about how the various hauntings occurred, since the game doesn't go too in-depth with its explanation. (Probably for the best. An explanation would detract from the mystery!)
We learn that [character] is responsible for all the hauntings. They have hidden cameras and microphones all over the house. That's how they played scary sound effects, when Nancy walked around. That makes sense. But what about the shadows and slamming doors? Were those on automatic timers? Did [character] just sneak around and do those things to creep Nancy out? I feel like SOME of the hauntings must have been on automatic sensors, because they happen even when it's late at night, when all the characters are sleeping. (Also when that character is out of the house.)
The big one that people ask about is the moving phoenix table leg. How did THAT trick work?
Also, there's the séance. It's at 7:45 of this video.
We get a look under the séance table after this. There is a fog machine, which feeds directly into the crystal ball. That explains how that worked. There's also an audio tape, which has the audio footage of the spooky ghost. Problem: there's no tape player! Nancy has to take the tape upstairs to another room, before she can hear what's on it. So how was [character] able to play the tape during the séance?
I also don't know how the piano played during the séance. Maybe it's a player piano set on a timer? The glass breaking also doesn't get explained.
There is a projector under the séance table, which explains how the ghost appeared in the glass window. We later learn it's a one-way mirror, which kind of explains how you can project stuff onto it and have it reflect back. But the projector is totally at the wrong angle to reach that mirror. It's also facing the wrong wall.
I'm left to presume that the projector and tape player got moved, in the time between the séance ending and Nancy looking under the séance table. That's one explanation, anyway.