Interesting game of 'who dunit'. I feel like if you expand it, you can make a solid gameplay out of this. I would add in synonyms to words used when you ask the board questions like sex = gender. That and the fact that if I say something while the board is spelling out something, the planchette just gets stuck on the board.
Here's my channel for other games I have played. https://www.youtube.com/c/Levont