This game is absolutely tearing it up on the app store charts. In just three weeks, the trivia game ‘QuizUp’ has amassed 3,5 million registered users. It reached its millionth user in just eight days.

QuizUp is being called the “fastest-growing iPhone game in history.”

It’s basically a free trivia game for iOS that offers more than 150,000 trivia questions across 300 categories. The best part, and possibly the most addictive part, is that you can challenge both friends as well as strangers.

You can either compete in a quiz against an opponent in real-time or round-by-round. Each quiz has seven rounds that lest 10 seconds each.

It’s a brilliant all-round trivia game with an adoring fan base, but has it got the staying-power to become a best-seller?

[Source : Business Insider]