This DLC includes spoilers!
It is recommended that you complete the base game "Hospital 9" before playing this game.

https://steamproxy.net/steamstore/app/1417100/

It's a short first-person adventure game.
Look for "investigation zone" in the building.
Answer the quiz about the object there.
If you answer all the quizzes correctly, you win the game.

You can select a game by pressing "Play" in the STEAM application.
I hope you enjoy the aftertaste of the story.