With gaming often bringing me into a really depressive headspace sometimes with how the markets are developing, whats a game you can always go to and just be lost in, or just be happy with?
Personally i would go for advance wars 1 and 2 on the gba (there is no remake and never will be)
the artstyle, the music, the game-play is just simple, yet effective, a sublime experience of very fun times.
Minecraft - creative mode is like so therapeutic, you just create and create and create, then also the adventure mode is so fun because you can just roam and roam and be surprised at what you find. there is no goal really aside from staying alive, so there is no stress whatsoever (if you disregard the endgame goal).
Diablo, - like Minecraft adventure mode. If you skip the campaign, there is literally no goal, you can just roam and roam and smash enemies, and you can even lower the difficulty so you can smash those enemies HARD!, It's just so satisfying, and then you get surprise loot as a side benefit.