Lewd: Girls in the Big City, or Lustdoll+ due to familiarity.
Normie: Plants vs Zombies on a trashy tablet.
I burned out my brain ages ago, and I dislike modding games for linux, so a lot of stuff that I used to have lying around for sanity sake is long gone. Holy Grail of cozy would have been Postal 2. That was fun as hell.
Fallout New Vegas or Fallout 4, depending on how long it has been since the last time I played and the number of mods released for them since that point.
I used to play Morrowind and Skyrim as my go to comfort games but Elite dangerous has them beat for me now. Just jump in my ship and fly through space exploring the stars or getting into fights with pirates if I'm feeling frisky. The fact that the game can span weeks just to get across the galaxy is incredible to me.