QuizUp

QuizUp is a staggeringly clever online pub quiz app, where you play with random strangers or friends. You can pick from a massive amount of categories, from riddles to sports through to Adventure Time, so you won't be caught out by subjects you don't know.

Its simple quiz rounds only take a couple of minutes to get through, plus there's a seamless offline challenge option so you can mentally battle people who then take their turn later. It's loaded with questions and constantly updated with new categories. A real treat.

credit: techradar.com

https://play.google.com/store/apps/details?id=com.quizup.core