I am certain every single one of you has heard of Game of Thrones. And for those of you who live under a rock and don't know what I'm talking about - it's a medieval-style fantasy TV series set in a fictional world, based on George R. R. Martin's A Song Of Ice And Fire. Although I prefer the books to the HBO version, I'll base this take on the series, since I think people tend to be more familiar with it.
This one is quite obvious I think - everybody loves sex. Game of Thrones, however doesn't just feature two people making out under a blanket. You get to see literally everything - both male and female homosexuality, group sex, infidelity, prostitution, public nudity, incest... I have never heard of another show that would show sex so shamelessly and in such variety. Besides, the vast majority of the actors we get to see naked are smoking hot - Emilia Clarke, Carice van Houten, Kit Harrington or Michiel Huisman; the list could go on for a while.
In my opinion, the depth of characters, their development and interaction with others is something that makes a show worth watching. Game of thrones has an astonishing number of characters with huge variety in them. There's people of all races, some are skinny, some are fat, some are tall and some are short. I think it's quite rare nowadays for actors with imperfections to be featured in leading roles of mainstream shows. And not a single character is half-assed. Even the less important characters each have a very unique personality. Take Jaime Lannister for example - he's not crucial to the story, he hasn't done anything that ground-breaking and he's just kind of there (my personal opinion). We all hated him in the first two seasons, but now he's adored by pretty much everyone. I also find it very intriguing how he instantly get's less likable when he's around Cersei. Which brings me to my next point:
Don't get me wrong -I'm not a feminist (or at least I don't think I am), but I find the involvement and role of female characters in the story terrific. There's the good ones, like Daenerys, the bad ones like Cersei, and even the ones where you can't really tell, like Melisandre. These are chicks that are vital to the story while not necessarily being tied to a guy. However, shit stays real, I mean it is a mel dominated society after all. Dany knew she had to obey her older brother, Cersei had to marry Robert Baratheon to have any power what-so-ever, and Melisandre spent all of her on-screen time willingly serving men. I'm a huge fan of this because while the show features powerful women, they're not just there to please the fourth wave feminists, unlike Rae in SW VII and Jyn in Rogue One.
Let's not lie to ourselves - we all love a bit of gore from time to time. Game of Thrones is one of the shows with the highest number of on-screen deaths ever, and they do tend to get quite vivid. You get burning, drowning, falling, magic and a LOT of the old fashioned death by sword, which is usually the coolest anyway (no, I'm not a psycho). What I also appreciate very much is that George R. R. Martin isn't afraid to kill his characters. The Starks, which were the center of the story in the first two seasons, were all killed off mercilessly. For every character that dies though, a new one is introduced, or an old one suddenly gets more attention. This keeps the story from ever being repetitive, and you never know which one of your favorite characters is gonna die next.
I'm sure that the child inside every single one of us screamed of joy after seeing the dragons hatching. They're just so undeniably cool! But that's not all though, the series features a bunch of other supernatural things. There's the fireproof Targaryans, the children of the forest, the white walkers, Melisandre and her weird fire magic, assassins that change faces and probably some more awesome things that I couldn't think of. The greatest thing about all this is that these themes, although somewhat childish, are conveyed in a way that appeals to the adult audience
Bonus: Did anyone else notice that the two most amazing fantasy authors, J. R. R. Tolkien and George R. R. Martin both have those two R's in their names? The conclusion I draw from this is that if you wanna be a successful writer, just stick two R's in between your first and last name and voila.