The network's programming president Casey Bloys said the team has taken this measure to keep the notorious elements guessing till the end, reported The Morning Call newspaper.
"I know 'Game of Thrones,' the ending, they're going to shoot multiple versions so that nobody really knows what happens. You have to do that on a long show.
"Because when you're shooting something, people know. So they're going to shoot multiple versions so that there's no real definitive answer until the end," Bloys said at Moravian College in Pennsylvania.
According to a report from anti-piracy firm MUSO, the episodes of "GOT" season seven each averaged 14.7 billion illegal views through September 3.
Within the first 72 hours of its initial broadcast, the season premiere was illegally downloaded or streamed more than 90 million times. The season finale was illegally downloaded or streamed more than 120 million times within its first 72 hours.
The final season of "GOT" is expected to air in late 2018 or early 2019.