A record number of mobile game developers and publishers including Tencent, 360 and Changyou have joined an initiative to improve the industry's self-discipline.

Organized by the Internet Society of China and the Capital Copyright Industry Alliance, a mobile game copyright protection and training initiative began on July 25 in Beijing. It includes a copyright protection vow signed by representatives of the nearly 100 participating companies.

It calls for Chinese mobile game companies to strictly obey national copyright laws, safeguard the industry's reputation and promote a sustainable and sound growth, said the Internet Society of China's mobile Internet working committee.