I have a few games that I am playing at the moment, but a lot of them require at least some time commitment once you start a round. I’d like something that I can start now and maybe finish later. Something on the line of Solitaire or https://mergetin.com/ .
Seems you’re into puzzle games so I’ll recommend you that there’s an entire genre of minesweeper clones / inspired games on Steam. Some are straight up clones of the game, others are very similar, and some use the mechanics but twist them around in interesting ways. Good examples are Hexcells, Hexseed, Tametsi, DELETE, and GlobeSweeper. Once you learn the basic mechanics, they’re pretty hard to forget, and a lot of games borrow mechanics from others. When I started DELETE, for instance, the mechanics were a little bit different in some small ways, but I pretty much rocketed through the first dozen levels because of my prior knowledge of how minesweeper works.