In a Certain Mansion

Here is a rare example of a game from Dieselmine in which the plot is not just for show. Specifically, this game is based on the legendary Abaddon, only without yaoi and yuri, but with much more modern graphics.
The plot tells us about a group of high school students who decide to go to an old mansion on the outskirts of town. Unfortunately, as soon as they entered and closed the door, it became impossible to open, and various paranormal events began to occur in the mansion. In addition, the students were hunted by a criminal who had escaped from prison and also found himself trapped in the mysterious mansion. However, at that time, the poor guys had no idea that this was just the beginning compared to what they would have to face in the future...