Like, games that you have played through multiple times, but you still like to replay them from time to time because you can just relax and have a good time without too much hassle.
For me some are Dark Souls 1&2 and Borderlands 1, I can play them without too much thoughts about what I’m doing, but still be focused enough so no bad thoughts appear.
Dungeon keeper has been a go to fix for many years. I usually play through the base game campaign at least once a year. Just peak comfy gaming for me.