China represents a huge market for video game companies, at least in theory. The truth is more dangerous, with a free-to-play model being the dominant concept in Chinese gaming, as well as rampant piracy and copycatting. Activision has set the wheels in motion to port its popular Call of Duty series across the bamboo curtain, but it remains to be seen if Chinese gamers will warm to the idea of actually buying a game. CNBC has the story.