Editor's note: PlayQ is one of Inc.'s 2015 30 Under 30. This year's readers' choice winner is ThinkLite.  

You've probably never heard of Joe Aigboboh, but if you play mobile games, you've likely run across his handiwork. More than 50 million people have spent roughly 200 million hours--equivalent to 23,000 years--on games built by his company, PlayQ. 

Without the benefit of any outside funding, aside from a $10,000 seed investment from startup accelerator Techstars, Aigboboh's PlayQ posted $11 million in revenue last year. While that's a fraction of what giant gaming companies--like King Digital Entertainment, of Candy Crush fame--take in, PlayQ is well placed to mushroom, alongside the mobile gaming industry in the next few years. Research firm Newzoo expects sales in the space to tick up as high as $41 billion by 2017. That's up from $30 billion currently, according to the firm. 

PlayQ, with hit games like Charm King and Bubble Blitz, expects to reel in around $20 million by the end of this year.

"The strategy is to stay focused on producing hits and making sure that we're able to support and grow those titles as big as they can be," says Aigboboh.

If he sounds focused, don't be fooled. Even the unflappable Aigboboh wasn't always so centered.

While many entrepreneurs launch startups based on a unique passion or interest, for Aigboboh, the decision to start a gaming company was almost entirely random. "It was more born out of the fact that I had an engineering background, and I could write code," he says. It likely helped that both he and his co-founder Ryan Komori, whom Aigboboh met at the University of Pennsylvania's Wharton School, had long histories of playing console games--from Atari and Nintendo to Playstation and XBox.  

In 2007, when PlayQ first launched under the name J-Squared Media, Aigboboh was in the midst of Techstars' three-month program. He was part of the startup accelerator's inaugural class.

Fortunately for the co-founders, the timing couldn't have been better. Facebook had just released Facebook Platform, which allowed third-party developers to build applications that could be shared with any Facebook user. The social connections of the platform helped PlayQ's early games amass more than 3 million downloads before his term at Techstars' was even over. By the end of the summer, Aigboboh had multiple acquisition offers in the seven-figures for his gaming company.

"It was a pretty big whirlwind," he says, adding that he turned down every offer so that he could keep growing the business. After a few years of building games exclusively within Facebook Platform, PlayQ shifted its focus to mobile and tablet games designed for iOS, Google Play and Kindle Fire. All of the company's games start with a original story based on a group of fictional characters.

"Then we'll build the game around that brand, rather than the other way around," Aigboboh says. PlayQ's latest game, Charm King, is a fairytale-inspired fantasy game that was ranked among the top 100 grossing apps in more than 40 countries across iOS and Google Play during 2014.

One of Aigboboh's earliest mentors is Techstars co-founder David Cohen, who says he noticed an usually high level of decisiveness in Aigboboh from the moment they met.

"A lot of founders will debate things back and forth for months," Cohen says. "Joe moves lightning fast when he believes there's an opportunity, and I think that's always differentiated him." 

One of Cohen's most significant memories from Techstars' first program is discussing the early acquisition offers Aigboboh ended up turning down. "We were telling him, 'Look, it's not every day that someone offers you a few million bucks when you just get out of school,'" Cohen says. "He made the decision in one day."