Simple digital games like puzzles and card games keep us coming back because...

https://the-digital-reader.com/why-simple-digital-games-still-have-a-place-in-an-age-of-complex-entertainment/

Simple digital games like puzzles and card games keep us coming back because they’re easy to pick up anytime, anywhere. You don’t need a long time to start playing, and the rules are straightforward but still offer some real mental challenge