markdown formatting is weird bruh, sometimes it adds spaces, sometimes it removes them sometimes it just fucking yeets newlines, sometimes it adds them, what a weird "standard"
Any of the PAID games from Kairosoft. Dungeon Village, Grand Prix Story, Game Dev Story. He has since re-released all his games as f2p microtransaction junk, but the full price versions are generally really good.
There are a lot of great suggestions here already, so I will just share Mini Review with you as a discovery tool. I like to use them because they have a lot of filters to help you find a mobile game. For example, here's their list for free, single-player, offline games with no ads or in app purchases, sorted by highest user score. They also have an app for both Android and iOS with the same info and filtering as the site.
My recommendation l is going back to the basics: chess, especially lichess.org
You can choose a mode however you want, and it may or may not be stressful. Multiplayer with friends or random online people, choose a time between 30 seconds for a game and infinity to move.
If you don't want to play right now, you can solve tactical exercises.
I liked the Palia beta and the Chinese New Year event. The world seems a bit dead sometimes though, and the quests can be boring. I haven't played in a while, I lost interest. I'll have to revisit it sometime.
I have clocked a lot of hours in Slice & Dice both on mobile and on PC well worth the 8 bucks even though I've paid it three times now I think.
Honorable mention to Suika(Watermelon game) about 3 bucks on the Play store.
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