Since the 1990’s, HBO has been behind some of television’s greatest series including The Sopranos, Six Feet Under, Oz, The Larry Sanders Show, Dream On, Deadwood, Sex and the City, The Wire, Big Love, Boardwalk Empire, Veep, True Blood, and most recently, Game of Thrones. Every single time HBO debuted a new series, it broke just about every single viewership record imaginable.

Even with the high expectations, no one expected Game of Thrones to become such a massively huge success. In fact, the show was so popular that the series finale was seen by nearly 20 million viewers, destroying just about any previous viewership record they had, ever. But even with the millions of fans that tuned in each weekend to watch the newest episode, Game of Thrones creators still made mistakes.

The problem with having an average of 30 million viewers each episode is that nothing goes unnoticed. There is always going to be someone that sees the mistakes and thanks to social media, now those mistakes become broadcasted to the rest of the world.

Let’s take a look at the 20 mistakes made on Game of Thrones that the producers did not want us to notice.

20 Queen of Starbucks (Season 8)

HBO quickly realized the mistake that has become a legend for the hit series Game of Thrones and erased it forever, or so they thought. After the premiere of the third episode of the show's final season, during a scene in which there was a very easy-to-spot Starbucks coffee cup sitting on the table, HBO edited it out. Any replays of that episode no longer shows the cup.

But then what is the point of social media if someone did not capture the moment and broadcast it for the internet to enjoy forever?

19 Lady Catelyn Is Short-Handed (Season 1)

Just eight episodes into the first season of the show, Lady Catelyn is having a conversation with her son, Robb Stark. In the middle of the discussion, she puts her right hand onto his left shoulder while facing him and having a very serious moment with her son.

But when the camera angles change from the side of the two of them to behind Lady Catelyn, her hand magically disappears. It is a small mistake, probably due to reshooting scenes, but it was very apparent and has become a major mistake from the show's first season.

18 A Special Kind Of Gold (Season 1)

If you had no idea about how to melt gold, then you would probably have never noticed the mistake made during the scene where Viserys gets his golden crown from Khal Drogo. After whining about it for some time, Khal Drogo finally decides to toss some gold into a cast iron pot sitting on the fire, to melt it.

However, it takes about 15 seconds for him to melt all the gold and he then pours it onto Viserys' head, killing him with his golden crown. Although the gold could have melted in that pot, it would take a very long time being the temperature would not be able to reach 1,948 degrees Fahrenheit, which is the temp used to melt gold.

17 The Head (Season 1)

One of the show's most iconic mistakes dates back to the ending of the first season when we were still recovering from the sudden death to Ned Stark, in which his head was then put on a spike, as promised by King Joffrey.

After he forces Sansa Stark to take a look at the row of heads on spikes, one of them is an old Bush mask head. It would never have been noticed had it not been for the DVD commentary by the creators of the show.

16 Where Did Tormund & Orell Go? (Season 3)

If the fans had their way, Ygritte would never have died during the Battle at Castle Black. Instead, she would have survived and gone on to marry Jon Snow and live happily ever after. But then we wouldn't have gotten the awkward relationship between Jon Snow and Daenerys Targaryen.

That said, go back to the sixth episode of season three, when Jon Snow, Ygritte, Tormund, and Orell finally reach the top of the wall as the sun is setting. After they begin to unpack for the night, the camera zooms away as Jon and Ygritte have a makeout session but Tormund and Orell are gone. They were just there a second ago, where did they go?

15 Jon Snow's Moving Scars (Season 6)

If you ever questioned just how passionate GOT fans are, then this is the best example. We did not even notice this, and probably never would have, had it not been for a group of loyal diehards that pointed it out on Twitter.

The mistake is regarding Jon Snow's stab wounds, specifically the one on his left pectoral muscle, the wound where he was stabbed in the heart. When he wakes up in Season six, the scar is closer to the middle of his chest, higher up his breastbone, and has a bigger curve than when we see him in Season seven. It has apparently shrunk and moved a couple inches to the left.

Great catch by some of the greatest fans in the world.

14 King Tommen Looks Familiar (Season 2)

Dean-Charles Chapman (Tommen) has done something on Game of Thrones that no other actor can claim. He played two different roles, and it was never meant to happen. He was originally hired to play Martyn Lannister, Kevan Lannister's son and a squire in the Lannister Army.

But for some unknown reason, after Martyn's death in season three, the show's creators asked Dean-Charles Chapman to come back and play Tommen, the future king of Westeros. No one knows why and this was not planned so it makes it even better that they tried to pull this one off without expecting us to notice.

13 Tyrion's Napkin Trick (Season 2)

Tyrion must have found himself stuck in the Matrix as a glitch during a season two moment he shared with his sister Cersei. During their conversation, he is sitting down eating and finds his napkin to have a mind of its own.

At first, it is taken off his armor and thrown on the table only to find its way back onto his chest plate and then tossed away again. But it did not stop there, he ended up doing it one more time. The whole time he did this, the conversation was ongoing and moving forward so maybe his napkin was stuck in the Matrix, not him.

12 Cheap Wardrobe Malfunction? (Season 1)

In the very first episode, we are greeted by an extra, walking behind Jaime Lannister, who is rocking a Patagonia jacket, blue jeans, and a pair of cowboy boots. It is easily missed by most people but after carefully studying the frames, it cannot be any more obvious.

Did they run out of time and had no choice but to use whoever they could find standing around the set for that scene? Or did they honestly think the fans would completely miss the fact that some dude in Westeros was wearing a stylish ensemble you can buy in stores today?

11 Shireen's Beautiful Blonde Hair

If you do not think hair color is important, then you must have missed the first season of Game of Thrones. Ned Stark dies after discovering that King Baratheon's children are not his because none of them have the standard jet black hair of a Baratheon. Instead, they all have the beautiful Lannister blonde hair, which helps him discover Cersei and Jaime are the real parents.

With the show creating a foundation that explains just how important genetics are in this world, then why did they forget about Shireen? If all Baratheons had this glorious black hair, how did she end up with blonde hair?

10 Melisandre's Not-So-Special Necklace (Season 6)

By the end of the series, many of the most beloved characters had fallen tragically by the hands of their enemies in battle. That is, except for one big name, Melisandre, who we can safely say has to be the sexiest character on the show. She met her ending after the Battle of Winterfell when she removed her magical necklace, which kept her from aging, and immediately turned to dust.

That makes sense except for something that happened back in season six when Melisandre removed her necklace and revealed her real age before going to bed. So why didn't she turn to dust?

Even back in season four, if you can recall a scene in which Melisandre was naked in a tub, without any type of necklace, she was perfectly perfect and stunningly beautiful.

9 Sophie Turner Was Once A Targaryen (Season 1)

The show's opening credits are probably the best we have ever seen on television as we are given a quick tour of the world while we are greeted with the actors' names next to the House sigil they belong to. For example, Maisie Williams' name appears with the House Stark sigil next to it.

But Sophie Turner's (Sansa Stark) name showed up during a season one episode with a Targaryen sigil next to her name. At the time, no one ever noticed. But when Sansa turned into one of the most powerful, and popular, characters on the show, this was blown into a huge ordeal. Was that an Easter egg? Did they try to tease us of a spoiler for the show's final season?

8 Stay Hydrated, My Friends! (Season 8)

Just because we had a lot of fun talking about a mysterious cup of coffee that was sitting on the table in season eight, and HBO caught it and fixed it quickly, does not mean the rest of the season was perfect.

In fact, there was an even bigger mistake during the show's final episode, at the council meeting, when you can easily spot a couple of plastic water bottles sitting on the ground at Samwell Tarly's feet and also under Davos Seaworth's chair. It is just plain lazy to miss that during filming, or even during editing.

7 Jorah Infects Queen Daenerys (Season 5)

Game of Thrones establishes just how dangerous greyscale is, as a highly contagious disease that kills your skin cells, turning them hard like stone and also affects the infected person's brain, turning them insane. It is fatal and there is no cure once an adult gets it. It can be transferred simply by touching someone with it.

For almost an entire season, we are told just how bad this is and now that Jorah has it, he must not touch anyone. However, while rescuing Daenerys from the fighting pits in Mereen, he reaches out to help her with his good hand, and then proceeds to use his infected hand to carry her down to the pit.

6 Missing Bodies Everywhere (Season 5)

In the future, if she was still alive, Queen Daenerys should know never to return to Mereen. Her entire time in Mereen was nothing short of a disaster. She lost many people, including some of her most trusted associates, and was nearly murdered by the Sons of the Harpy in the fighting pits before Drogon swooped in to save her.

During the battle sequence in the fighting pits arena, many of the Sons of the Harpy died, along with some of the Unsullied, and yet when the camera pulled away, the bodies vanished.

5 Wight's Hate Wood, Love Crypt's 

Since Queen Cersei, and almost anyone that did not come from the North, did not believe the White Walkers were real, Jon Snow put together a task force to go North and trap a wight, put him in a wooden box, then bring him to King's Landing to show everybody just how real these things are.

While trapped, the wight remains completely locked down the entire trip to King's Landing, from far North of the Wall. If a wooden box could hold a wight, then how did they all bust out of those stone crypt's that were kept underground in Winterfell?

4 Euron Builds Gigantic Fleet Overnight

Timing is everything. For Euron Greyjoy, it seems to be one of the least important things in the world as he had the ability to stop time at will, or so we are led to believe since he ends season six demanding 1,000 ships from his people. But when we see him again, during the seventh season's premiere, his ships are built.

To give you an idea of the timeline, Arya Stark was at the Twins during the season six finale, where she murdered Walder Frey. Then, in the season seven premiere, she is still there but is now disguised as Walder so she can kill the rest of his men.

Are you telling us that he got 1,000 ships built in less than a week?

3 Jon Snow's Rubber Sword (Season 6)

Jon Snow's sword has a name, Longclaw, and was given to him by Jeor Mormont, former Commander of the Night's Watch who died during a mutiny at Crass's Keep. Jon used that sword all the time and proudly carried it by his side.

But during the Battle of the Bastards, as he jumps onto his horse, Longclaw can be seen bending, which is impossible for steel to do without insane pressure. This caused fans to reveal that this sword was actually rubber, which is not as threatening.

2 Stannis Dies With His Laptop Charger (Season 5)

The death of Stannis Baratheon at the end of Season five was still one of the biggest shockers on the show, even for book readers, because he was still alive at this point in the show and in the books. But it seemed as if things were changing on television and the storyline called for Brienne to finally get her revenge for Renley Baratheon's death.

The problem with his death scene is that there was a laptop charger clearly in the frame, next to his right leg. Although it looks like a laptop charger, it is probably the power cord for the blood machine hooked up to him to make his death look very real.

1 When Did King's Landing Move Locations?

Of all the mistakes made during the final season of Game of Thrones, this is one for the ages. King's Landing was situated next to water. In fact, it was surrounded by water on three sides of the city. The only part that was not next to the water was the part that was attached to a cliff that was covered in wilderness.

So how did this beautiful city end up being moved to a desert wasteland on one side for the final season? Well, that is for filming purposes and nothing more. The show's creators basically stuck the finger at us and said they were going to make the easiest move they could think of just to get the shots they want and never once explain why.