Fifteen-year-old Austin Valleskey doesn't have his drivers license yet...but he already has a worldwide successful app.
A few months ago the suburban Chicago teen was contacted about an idea for an app by Australian Ben Pasternack, who is also 15.
"I thought it was cool," said the Wheaton Academy sophomore. "He asked if I wanted to make it into a game. I said sure, it's a Saturday, I've got a couple of hours."
And a few hours is all it took for Valleskey to create a prototype for Impossible Rush- a brain-teaser game.
"We didn't think much of it. We just wanted people to have fun with it," Valleskey said.
And people did.
The pair contacted a marketer who agreed to buy the app and the game's popularity skyrocketed.
With over 500,000 downloads at its peak, the app was ranked 16th in the U.S., 7th in Sweden and 18th in Australia, according to Business Insider.
Valleskey said he was in disbelief.
"It passed up Skype, Tinder, Netflix, all of these huge companies. It was crazy cool to me!" the teen told NBC Chicago Thursday. "It's a great thrill."
The young teen says he taught himself computer programming just one year ago during a road trip to Florida.
His parents shared his latest excitement.
"It's been just so much fun to see the success he's had with it," said Michael Valleskey. "He's learning so much going through this process."
Valleskey says he's already working on developing another app.