Will fans be satisfied with series finale of 'Game of Thrones'?

Lots of fans just aren't ready to part with their beloved series.
3:03 | 05/19/19

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Transcript for Will fans be satisfied with series finale of 'Game of Thrones'?
Welcome back to "Gma." They say all good things must come to an end. But lots of "Game of thrones" fans just aren't ready to part with their beloved series. With the final episode tonight, million of fans will be tuning in and will reeve is here with more on the great expectations, will, lots of pressure. Reporter: After 72 episodes, countless deaths and affirm place in the TV pantheon, "Game of thrones'" saga concludes tonight. It's really hard to say good-bye to huge shows like this even if they don't like how it ends. If this is a happy ending, you haven't been paying attention. Reporter: Tonight, it's one of the most anticipated series finale in TV history. When you play the game of thrones you win. Reporter: "Game of thrones" grew into a cultural phenomenon in its eight-season run. But the series now faces its ultimate battle -- meeting fans' expectations for its final episode. The fact that HBO is regularly bringing in 18 million viewers per episode is really extraordinary. Reporter: But this final season coming under some fire. Over 1 million fans have signed a petition calling for the season to be completely re-made. Fans have filled in so much themselves in terms of their theories, what they think is going to happen to the characters. Somehow when those characters depart from that it's very upsetting. Reporter: Satisfying legions of die-hard fans in the series' finale has historically been a daunting task. They told themselves that this is going to be a game-changer. This is going to be a big deal. Reporter: The series' finale of "M.A.S.H." Was well received by critics and fans in 1983. But "Seinfeld's" 1988 series finale was met with more mixed reviews and "Sopranos" fans weren't happy how that series ended. The show, the longer they're on the more the writers write themselves into a corner and it's hard to wrap things up with a bow. Reporter: Tonight, the "Game of thrones" saga ends and the finale judged forever. When a show that has taken so much time and conversation goes away it leaves a void in fans' lives. To help people cope with that, one london-based counseling service is offering "Game of thrones" therapy. Probably a mixture. Or sword play. You're never going to satisfy everyone. I'm sure that was a good report. I did have my ears closed. We're still early on, early seasons, I'm playing catch-up. It's hard to avoid the spoilers. That's for sure. I'm sure every is going to be talking about it. We already need the therapy. Coming up on "Good morning

This transcript has been automatically generated and may not be 100% accurate.

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