This is the first mobile game I've downloaded because of a YouTube ad, and that ad was very intriguing. The game is great and is a good way to pass time without necessarily wasting it, but not using it productively either as it is just a game. The different selection of cards and facts that come with is very interesting, and collecting them has been oddly therapeutic for me. Anyways, what I'm saying is it's a great game if you give it a moment to get started and use some sort of strategy.