Goofs

Daenerys says that Viserys "would have let 1,000 men rape me if it had got him the crown." Actually, Viserys said in Winter Is Coming (2011): "I would let his [Drogo's] whole tribe fuck you, all 40,000 men and their horses too, if that's what it took."

Human corpses, when incinerated, form what is known as a "boxer's crouch." This is because the muscles contract, pulling the arms up before the face, and the legs up towards the body in a semi-sitting position. Sometimes the muscles can contract so tightly they crack bones. The bodies of the two children as displayed by Theon and his men would therefore not lie flat.

Tywin mentions that people still remember Aegon Targaryen's name 300 years after his death, as the show takes place in the years 299 and 300 in Westeros, though years are counted from Aegon's conquering of Westeros, not from the year he died, which was approximately forty years later.