Alexander Agapitov was expelled from the Faculty of Mechanics and Mathematics of the Perm National Research University 11 years ago. The student has written an algorithm for analyzing betting sites that makes winning bets, and has launched a game payment service on the Internet. These projects took almost all the time. The first service did not fire, and the second grew into Xsolla, which creates payment and billing tools for video game developers and publishers. Xsolla supports about 700 payment systems, its products are used by such giants of the gaming industry, such as Valve. The headquarters of Xsolla is in California.