Wow, what an atmosphere! I'm terrified of that grubby little demon hand and the noises it makes, the visuals are amazing, sfx hit the mark, and the input ouija board is very unique. Our game was actually quite similar, playing as a dead person and manipulating objects, but instead we made the tone a lot lighter. This game's tone was a great contrast! Couldn't solve the mystery, even with the hint you gave in the comments though! I have no clue where the will is... :(
This was a really great game, looking forward to a post-jam version if you're doing one!