Finding a mansion in the forest is not at all a wonder. Rich people can afford to build a house wherever they want, including in the forest. If permitted by law. But in the game Specter Spirit Escape you found not just a house, but some kind of ancient building. Apparently it is so ancient that a forest has grown around it, or the park that surrounds it has turned into a thicket. The weather is getting worse and you decide to wait out the storm inside the building. No matter how old it is, the front door is strong and locked with a key that you need to find. In addition, ghosts will bother you. For now they keep their distance and you need to somehow neutralize them in Specter Spirit Escape.