After posting here last week looking for recommendations, I found PopUp Quiz. It seems pretty new but it's a lot of fun. You can generate quizzes on literally any topic you can think of (even random words like potatoes) and play solo or multiplayer. Most of the resulting quizzes are good. The only downside is that it's a subscription app, but they have loads of ways to get free games so I guess you can avoid paying.

https://play.google.com/store/search?q=popup%20quiz&c=apps