Fans around the world love reading this epic fantasy .
The White Walkers represent a deadly to human survival.
The story takes place on two continents created by the author.
The HBO adaptation quickly turned into a global .
Several families form alliances and fight for political power.
Beautiful real-world like Iceland were used during filming.
HBO created House of the Dragon as a successful set in the past.
Jon Snow and Tyrion Lannister are among the most characters in the show.
