Half Life for reclusive people.
https://en.wikipedia.org/wiki/Portal_(video_game)
Pros: Charming AI character and innovative physical game play.
After you win (? did you ?) you are treated to the most appropriate song ever. It still sends shivers down my spine.
https://www.youtube.com/watch?v=Y6ljFaKRTrI&fbclid
Cons: The cake is a lie.