Pie Runner is a fun, addictive and easy game to play. Enter the digits of Pi to run! Make a mistake and you fall flat on your face! The more you play, the more digits you'll end up memorizing without even trying. What is Pi? Pie is the ratio of the circumference of a circle to its diameter. That's it. It is equal to 3.1415926535... and goes on forever without repeating! People around the world have been fascinated by memorizing the digits of Pi for hundreds of years. There is a World Record that tracks the most digits of Pi memorized! There are a lot of ways to customize your Pie Runner avatar. You can unlock headphones, some cool shades or even change your Pie Runner to a piece of pizza pie! Items are unlocked with Pie Points. Pie Points are earned by racing or by watching videos. If you want to unlock all of the customization features at once, you have the option to do so with an In-App purchase. Compare your scores against your friends or the best in the world!