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.
Red Dead Redemption 2 - played all the way through 3 times. Now I’ll just load up in a random chapter and just enjoy the game and atmosphere. Sometimes I’ll go a play a mission where I get you go nuts, or just load up go camping with my horse and explore the map. Or I’ll make up my own challenges. Like hijacking a train to see how far around the map I could make it before getting shot. Or seeing how many racist/KKK members I can burn alive.