Mine is playing AOE2 in easiest (or standard if I want a bit of challenge) mode against 3 bots. I just build my economy, wall up (and laugh at the enemy soldiers attacking my walls in vain), reach imperial age and attack once my army reaches the population limit. I also send 104 in the chat so they don’t surrender and I can enjoy razing their all buildings one by one. If any of them builds a castle, even more fun. A build a trebuchet and watch it raze the castle from a safe distance. If there is sea, after I am done with the land, I build 3 docks, do research and build a navy and hunt down ships around the unxplored sea. It is fun, satisfying and relaxing.
What is yours?
Sometimes I pick through homebrew content other people have made and offer comments and suggestions. I used to float around on /r/UnearthedArcana before I jumped from Reddit, I’m kind of hoping something similar pops up in the federation. Either that, or on the really bad days, I play an old game that I’ve played a bajillion times before. I know the routes and strats, I can kind of go on autopilot while I try to decompress from the shit that happened. System Shock 2 is a favorite.