VIDEO : Second 'Game of Thrones' Prequel Reportedly Close To Production

HBO HBO announced it was developing four different "Game of Thrones" prequel or "successor show" ideas. The first series, an untitled show about the Age of Heroes, was ordered for a pilot last month. Now a new unconfirmed report says a second show in development is about the Doom of Valyria. The Doom of Valyria makes sense as a setting for a prequel when connected to author George R.R. Martin's coming fake-history series "Fire and Blood." But for now, this report remains unverified by HBO.