“Game of Thrones” executive producer Vince Gerardis, who reps “Thrones” author George R. R. Martin among other literary giants, is developing “The 4th Kingdom,” a $40 million high-octane drama series which he describes as “Mad Max” meets “Waterworld.”

The ten-episode series is penned by Paul Chart whose credits include the adaptation of P.D. James’ science-fiction novel “The Children Of Men” (2007), “Journey 3-D” (2008) for Walden Media/Disney starring Brendan Fraser, the Puccini biopic “Cecilia” for Irvin Kershner and a rewrite of the hit animated feature “The Book of Life” (2014), produced by Guillermo Del Toro.

Gerardis is hoping to shoot the adventure series in the Bahamas, which is renowned for its expanse of shallow waters. Gerardis was attending the 12th Bahamas Int’l Film Festival (BIFF) (Dec. 1-12) that has been taking place in three stages on Harbour Island, Eleuthera and Nassau as part of founder-executive director Leslie Vanderpool’s bid to showcase more than one island.

“I mentored at the screenwriters workshop this past week and found myself uncharacteristically enjoying myself,” said Gerardis of the BIFF Screenwriters Residency Program, co-hosted by ScreenCraft and Buffalo8 that took place Dec. 1-4 on Harbour Island. “It was hard work, studying 12 scripts sufficiently to offer counsel to each young writer, but the attendees were each worthy and talented, fresh professionals, and what I assumed would be an opportunity to give back turned out to be a moment of shared passion — for story (blue water and other benefits, aside).”

He was equally enthusiastic about the festival itself: “With the thousands to choose from, how does one select a film festival worth attending? Sundance, Toronto, Berlin, Tokyo… The Bahamas?” he mused. “No more stunning vistas exist anywhere,” he said, noting: “Several amazing restaurants and efficient coordination made this the perfect — vacation?”

Gerardis has sold up to 10 shows in the last six months. Among them is the pilot for “Will” which TNT announced at its Upfront in May. Kevin Reilly, who signed on in January as prexy of TNT and TBS and chief content officer of Turner Entertainment, is bent on revamping the programming for Turner’s flagship networks. Penned by Baz Lurhmann’s long-time writing partner Craig Pearce (“Moulin Rouge,” “The Great Gatsby”) “Will” turns on the raucous early years of a young William Shakespeare. Gerardis, Howard Braunstein and Louise Rosager exec produce with Pearce.

Meanwhile, Spike TV has confirmed its move into scripted programming with a straight-to-series order for “Red Mars” a 10-episode show based on Kim Stanley Robinson’s Mars Trilogy of novels — “Red Mars,” “Green Mars” and “Blue Mars.” “Sense8” co-creator J. Michael Straczynski will pen the series and also serve as showrunner and exec produce the show, along with Gerardis, who brought the project to Spike. David Ellison, Dana Goldberg and Marcy Ross of Skydance Television, also serve as exec producers.

Also in the works is “Ice,” loosely based on Gerardis’ previous life as a diamond trader in downtown Los Angeles, with Antoine Fuqua attached to direct the premiere episode. Co-penned by Gerardis and Ron Bass, it was developed at Alcon TV Group and pitched to DirecTV.