The anticipation for the final season of Game of Thrones is arguably the highest for any series ever, as fans will get to see their very favorite (and most hated) characters come together for one final time and battle it out for the Iron Throne. Apart from finding out which character(s)—if any—emerge victorious, audiences are also curious to see the new locations and set pieces.

According to Variety, the final six episodes of Game of Thrones cost $15 million apiece to produce, making it one of the most expensive shows ever made. And although it’s taken a large budget all along to make a show as massive as Game of Thrones, the showrunners have had to compromise in the past to save some cash. One place where this is evident—at least if you're looking very closely, according to co-creator D.B. Weiss—is in The Hall of Faces. Instead of making dozens of masks to show a variety of individuals, the faces you see largely belong to members of the production crew—which they use again and again.

"You need enough faces that you don’t sense the repeats, but you obviously can’t face cast thousands and thousands of people because that’s prohibitively expensive,” Weiss said. "We used all the face molds we have ever used before. Both [series co-creator] David [Benioff] and myself appeared many, many times in the Hall of Faces ... there is at least 20 or 30 of me in there, which is, I suppose, my cameo for the show."

Though you may not recognize many of the faces, looking out for repeats could be a fun game to play as you obsessively re-watch the series and await its return. Game of Thrones's final season will premiere on HBO in April 2019.