As the PlayStation (SNE), Wii, and Xbox (MSFT) lose market share to smartphones and tablets, video game developers face problems, too. Playing graphics-rich sports, shooter, and racing games on mobile touchscreens better equipped for Angry Birds can be deflating or nigh-impossible. Guitar Hero co-creator Charles Huang thinks he has the answer: supplement the mobile hardware with controllers that can better replicate the living-room gaming experience. “The opportunity for us,” says Huang, 43, “is to leverage the install base of all those (mobile) devices but give people the type of games they want to play.”