Hoohoo, I only know of that game at least! That reminds me, there's a town you might like if only because I remember it being haunted? It's out in Kanto, and its name is Lavender Town. The protagonist in the game quiets the restless spirit that was haunting the burial tower, but I don't know for sure if that was the only one? It was a real ghost, not just a ghost type Pokemon!