Mr. Adrian's mansion is creepy

It's 80s. You are Jules, a history professor at a university who struggles to inspire your students. Your odd friend from when you were at an elite academy in the 70s invites you to his home to reconnect.

Despite all the years apart, you still fear Adrian, who, although he was a model student, always seemed to be hiding something disturbing. Trapped in his house, you realize things aren't the same as before.

[From Itch.io]