Simple digital games like puzzles, quizzes, and card games stay popular because...

https://ameliasexcellentjournal.quillnesty.com/posts/how-progress-tracking-should-work-in-short-session-mobile-games

Simple digital games like puzzles, quizzes, and card games stay popular because they're easy to pick up anytime. You don’t need a big block of time to enjoy them, making them perfect for smartphone sessions