Kwon, 41, founded Smilegate in 2002, one of the world’s largest online and mobile gaming companies with over 500 million worldwide subscribers. In China alone, its online first-person shooter game, Crossfire, pulled in nearly US$1 billion in sales last year. Kwon owns 100 percent of Smilegate — not bad for someone who could not make a profit early on and nearly closed up shop. When Smilegate merged with Chinese Internet giant Tencent in 2008, fortune began to turn in Kwon’s favour.
Net worth:US$3.5 billion