The same thing happened awhile back with i3wm. It’s just the current popular fancy window manager and looks fairly decent out of the box.

As far as lightweight window managers go, it’s pretty middle of the road. Something like DWM or 2BWM will get you a smaller footprint, but come at the cost of needing extra configuration to make them look more modern.

Almost every Zachtronics game had some kind of solitaire. There’s an android app that has a collection of them.