That is easy to answer for me.
Mansion of madness
I have played so many rounds with so many different people. The game is complex enough that each round is different. But easy enough to geht people to start with. Easy to play hard to master.
The digital game master via APP is great. I had so many games in which the last player actions decided the game. After some hours of game time. Your actions feel so impactful.


Limbo.
I really like the atmosphere. They created so much with such an minimalistic graphic style.
Factorio.
I don’t know where to start. Overall a great example that some people like to optimize and put way more effort into this game than their job. Zeitgeist?