Teenager develops top 20 iTunes app

A teenager is making a big splash in the app world.

15-year-old Austin Valleskey co-created a game called “Impossible Rush.”

He says he taught himself how to code a few years ago and recently started designing apps.

Austin and a teen from Australia teamed up ad created “Impossible Rush” within hours.

“It's just such a simplistic game that anyone can pick up and play right away. I knew we were kind of on to something, but I wouldn't have though any day that this would be what it is now,” says Austin.

The two teens sold the app to a marketer for a few hundred dollars, and at its peak was ranked 16th on the iTunes store chart.