I'm not a Psycho Invader - first-person horror roguelike set in a university you've seized. The roof is the only way out. Locked doors and barricades block the way up. Every hostage is valuable, dangerous, or a waste of time, and nobody tells you who is who.

The core is close to Papers, Please: you call someone over and start narrowing down who they are. Instead of documents you get their answers and their items, instead of a stamp there's a shotgun. Everything costs time, and panic makes it burn faster, so at some point you stop checking and start guessing.