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

https://claytonsnewblog.tearosediner.net/how-do-daily-challenges-make-trivia-games-more-fun

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