George R.R. Martin, whose novel 'A Song of Ice and Fire' forms the basis of the hugely hit HBO fantasy drama television series 'Game of Thrones,' is currently working to develop three more television shows for HBO and Cinemax. This was confirmed by the 66-year-old novelist himself in a recent blog post.

IB Times reports that recently Martin posted on his Live Journal blog, "Life is impossibly busy right now," adding, "I am wrestling with the 'Son of Kong' (that is, working on "The Winds of Winter"), trying to wrap up a final round of edits and revisions on the twenty-third Wild Cards book ("High Stakes"), developing three new series concepts for HBO and Cinemax, hiring writers and directors for three short low-budget films I am hoping to produce based on some classic SF short stories (more on that in the months to come), making my way through the Hugo Packet to prepare to vote, looking forward to opening 'Jurassic World' at the Cocteay and to hosting a 10-author special event for the release of Steve Stirling's new "Emberverse" anthology ("The Change")."

Martin further wrote, "In a week's time, we'll be flying off to Europe for long-planned appearances in Germany (Hamburg) and Sweden (Stockholm), en route to Archipelacon on the island of Aland, where I am to be the Guest of Honor..."

Earlier, in April, the Hollywood Reporter mentioned that Martin is developing a series with HBO called 'Captain Cosmos.' It is about a science-fiction writer living in 1949. The novelist, however, didn't comment on the status of the show, though it was reported that it is still in the early stages and wouldn't be a huge time commitment for Martin, who is continuing working on "The Winds of Winter" novel.

'Game of Thrones' is based on Martin's fantasy novel series "A Song of Fire and Ice' and it premiered on April 17, 2011.