"Game of Thrones" author strikes 5-year deal with HBO

George R.R. Martin is founding a new content kingdom at HBO, according to Hollywood Reporter.

The Game of Thrones author just signed a massive overall deal to develop more programming for the network and its streaming service, HBO Max.

Sources say Martin's contract spans five years and is worth mid-eight figures.

The news comes on the heels of a surge of Game of Thrones prequels being put into development. All told, the network has five projects based on Martin's A Song of Ice and Fire fantasy world in the development stage and one (House of the Dragon) that's been greenlit to series.

The four-time Emmy winner is also developing for HBO the series Who Fears Death (an adaptation of Nnedi Okorafor’s award-winning 2011 postapocalyptic novel) and Roadmarks (an adaptation of Roger Zelazny's 1979 fantasy novel), both of which he will executive produce.

Martin first struck a deal to license his A Song of Ice and Fire novels to HBO in 2007, a journey that would lead to HBO's biggest and most award-winning series of all time. Martin is represented by WME, Christine Cuddy, and Vince Gerardis.

Martin has some projects beyond HBO, as well.

Plus, Martin has his ASOIAF novels, with his long-awaited sixth book in the saga, The Winds of Winter, currently being written.

Photo by AP Photo/HBO, Nick Briggs