Chinese regulators are reviewing new games to determine whether they meet stricter criteria on content and protections for children, people familiar with the matter said, an effort that is likely to slow rollouts in the world’s largest mobile arena. China’s National Press and Publication Administration is reassessing titles submitted for approval by developers from Tencent Holdings Ltd (??) to NetEase Inc (??) to ensure they comply with fresh curbs on playing time and other anti-addiction safeguards unveiled last month, the people said. The watchdog turned back applications late last month and asked developers to resubmit titles with the new mandatory...