From qingcharles post earlier, three people with abeto.co (https://abeto.co/). https://www.hackerneue.com/item?id=45397933
> https://xcancel.com/abeto_co
> https://xcancel.com/vlucendo
Return of the Obra Dinn!
https://store.steampowered.com/app/653530/Return_of_the_Obra...
Haven't played Obra Dinn yet (it's on my list of games to play together with my wife), but anything by its developer Lucas Pope is a masterpiece. Papers Please, while it infuriated me at times (apparently I suck at following rules and spotting differences) was just amazing. Available on mobile and PC.
There's also an article on another game by the same folks that's similar (but earlier) which describes some details on building it
If anyone knows of similar games / apps / software tools that I could show as examples of solo developer small scope simple UI games I'm always trying to find more..