Do you know what the most popular game on App Store at present is? Until recently, the title of most popular game was dominated for many months by Angry Birds, but Bubble Ball, a game made by an eight grader, recently outpaced Angry Birds.

The person behind Bubble Ball is Robert Nay, a fourteen-year-old eight grader, and he introduced this app last month. For less than a month this game has gained an enormous popularity and it became the most popular free app for iOS devices on App Store.

So far, this game has been downloaded more than two million times and the downloads are still counting. So what's this game about? Well, it's a simple puzzle game that uses physics for solving puzzles. Your objective is to combine all sorts of objects and uses physics to help you guide the ball to the finish line.

If you're interested in this game we suggest that you download it from the App Store because Robert did an amazing job with it.

[via Engadget]