Blizzard is the developer of world-famous games including Starcraft and World of Warcraft, which have millions of players globally.
Launched in 2009, the company has teamed up with NetEase Inc, a Beijing-based Internet and online game services provider, to release games into the Chinese mainland.
The cooperation helped NetEase to make a profit initially but the deal failed to boost the company's online game sector because the rate of increase in the number of China's PC players slowed over the past two years.
Decreasing revenue from World of Warcraft "partially offset" NetEase's earnings from advertising services and the company's self-developed online games, said a third-quarter report from NetEase.
Earlier this year, the Chinese company renewed its license with Blizzard for World of Warcraft in the region amid declining revenues from the game.
"Both Blizzard and NetEase value the user experience and putting the product first, making sure that the product is right before releasing it," said Morhaime, adding that based on this common ground, the companies were able to maintain cooperation and make similar decisions.