With the long awaited return of HBO's most popular series, 'Game of Thrones', EW sits down with the showrunners to discuss the upcoming season.

Along with the content of the show and its characters, the producers are soon faced with a lot in season five, such as the separation from the original George R.R. Martin series.

When asked about the most unique aspect of the next season, David Benioff responds:

"Worlds are colliding. For so long, we've been in separate continents, and finally this season we're starting to see some crossover. Tyrion and Arya-at end of season 4, we saw two major characters bound for Essos. That changes everything for us. It's exciting to see our familiar characters in unfamiliar locales and interact with each other, and hopefully we'll see more of this as the story progresses."

This season will be the first to introduce to the fictional land of Dorne. When asked what excites them about this, Dan Weiss responds:

"We were so happy to be able to include it. We didn't know if it would fit, to be honest-because of budgeting, scheduling and story reasons. There were a lot of ways we had to cram it in. But it's such an important place. Of all the places in Westeros you'd ever want to live, the Dornish seem to have figured out the right approach to life. It's the one most aligned with what our approach to life would be if we weren't making this show. It's our Brazil-we dream of Dorne and the way they do things down there. And Indira Varma [who was introduced as Ellaria Sand last season]-once you have someone of her caliber, you want to double down on that casting strength. Also the Sand Snakes are such a fun, exciting addition to that world. [Prince Oberyn Martell] opened up a tiny window into this world last season, and now you get to go through that window and see what kind of world this is that made this person we loved so much."

Benioff also addresses the divergence from the books stating:

"I think every season has been a little bit more. The first season was extremely faithful. The next season had a few more deviations. Each season has had to go a little more. If we were to remain entirely faithful to A Feast for Crows, half the characters-the most popular characters-would be absent from the screen this season. It's always been about adapting the series as a whole and following the map George laid out for us and hitting the major milestones, but not necessarily each of the stops along the way. It's an adaptation, it will have to adapt in order to survive. There are always going to be some people who want everything to remain exactly as in the books. For us, it was never a choice."

The full interview is available at EW.

'Game of Thrones' returns to HBO on April 12^th.