Not in any order:

Subnautica

This is the most terrifying game. A bat attacked me in real life after a **REDACTED** attacked me in game. I’m still afraid but I’m going to try it again.

The Witness

I am not good at the puzzles. I drew a lot of them on paper but I am not good enough. I never got the meta-puzzles and I am sad about it. But I liked it and I got pretty far without cheating. I still think about it a lot.

Path of Exile

I could make builds in this game forever. Endlessly fascinating and so hard on hardcore.

Dominions 5

I have only played the Dominions series in single player, but the fifth entry is the most playable of the series. A masterwork in worldbuilding.