Bloomberg reports that Naruatsu Baba, the 35-year-old founder of Japanese smartphone game maker Colopl Inc. (3668), has become one of the youngest billionaires in the world as the company’s stock has increased sevenfold since its December initial share sale:

One of its free “Kuma the Bear” games has been recently downloaded more times than apps from Facebook, McDonald’s or Twitter, according to the Google play website. Colopl’s games have been downloaded 10 million times in less than a year, Baba said on his company’s website. That is equal to about 8 percent of Japan’s population.

Bloomberg itself has gamified the billionaire index —just look at the cartoon presentation updated on a daily basis!

Talk about a bubble, huh?