(from HBO's press release, April 2014) HBO has renewed GAME OF THRONES for a fifth and sixth season, it was announced today by Michael Lombardo, president, HBO Programming. "GAME OF THRONES is a phenomenon like no other," noted Lombardo. "David Benioff and D.B. Weiss, along with their talented collaborators, continue to surpass themselves, and we look forward to more of their dazzling storytelling." Based on the bestselling fantasy book series by George R.R. Martin, GAME OF THRONES is an epic story of treachery and nobility set on the continent of Westeros, where summers and winters can last years, and only the lust for power is eternal. The Emmy(R)- and Golden Globe-winning series launched its ten-episode fourth season Sunday, April 6 (9:00-10:00 p.m. ET/PT), exclusively on HBO, with other episodes debuting subsequent Sundays at the same time. Cast regulars for the fourth season of GAME OF THRONES include: Emmy(R) and Golden Globe winner Peter Dinklage, Nikolaj Coster-Waldau, Lena Headey, Emilia Clarke, Charles Dance, Aidan Gillen, Jack Gleeson, Kit Harington, Diana Rigg, Sophie Turner, Maisie Williams, Isaac Hempstead Wright, Alfie Allen, Jerome Flynn, Conleth Hill, John Bradley, Gwendoline Christie, Liam Cunningham, Stephen Dillane, Natalie Dormer, Iain Glen, Kristofer Hivju, Sibel Kekilli, Rose Leslie, Rory McCann, Michael McElhatton, Iwan Rheon and Carice van Houten.