In a recent interview with EW, George R. R. Martin revealed details for the upcoming Game of Thrones prequel.
Rumored to be called The Long Night or The Longest Night, the spinoff will be set in a different Westeros than what fans are used to, and will consist of 100 kingdoms opposed to seven in Game of Thrones.
“We talk about the Seven Kingdoms of Westeros; there were Seven Kingdoms at the time of Aegon’s Conquest,” Martin said. “But if you go back further then there are nine kingdoms, and 12 kingdoms, and eventually you get back to where there are a hundred kingdoms — petty kingdoms — and that’s the era we’re talking about here.”
Source: IGN.com Game of Thrones Prequel Will Feature Starks, Direwolves and 100 Kingdoms