Russian gamer brothers are the newest hidden billionaires

Igor, left, and Dmitri Bukhman, founders of Playrix Holding Ltd., pose for a photograph at Sarona Market in Tel Aviv, Israel, on Friday, March 29, 2019. The brothers are the brains behind Playrix Holding Ltd., the creator of popular games similar to Candy Crush, including Fishdom and Gardenscapes, with more than 30 million daily users from China to the U.S. and annual sales of $1.2 billion, according to Newzoo. Photographer: Corinna Kern/Bloomberg

Almost two decades ago, in a remote Russian city best known for its butter and linen, two brothers shared a bedroom and a Pentium 100-powered computer they used to code their first game. 

Wall Street wants a piece of what they’ve built since.