And mixed martial arts, where athletes combine Japanese, Chinese, Thai, Brazilian and American fighting styles, has exploded as a professional sport.

WSJ: Hollywood's New Kick: Why Everybody Is Kung Fu Fighting

The original Chinese audience have read, and watched, many books and movies about the martial arts.

FORBES: Connect

The rest are licensed and adapted for the local market from Chinese and Korean gaming companies--with some misses, such as introducing hard-core, martial arts features to Vietnam's less advanced gaming market.

FORBES: Companies, People, Ideas