Gameworks

Top MTV marketing executive John Shea is expected to disclose in the next few days that he is leaving to join Sega GameWorks, the fledging joint venture of interactive entertainment centers launched by video game maker Sega, DreamWorks SKG studio and entertainment giant MCA Inc. As senior vice president of marketing at the cable channel, Shea has supervised all of MTV's marketing programs. He joined the company in 1988 as director of promotions.

The DreamWorks SKG executive who has been overseeing the company's plans to build a new studio lot at Playa Vista is leaving to help run a new entertainment venture DreamWorks has with MCA Inc. and video game giant Sega. Michael Montgomery will become president and chief operating officer of Sega GameWorks, which is developing so-called location-based entertainment centers where visitors will play an array of games.