Season 1-6 10/10 Amazing, complex dialogue and intriguing logical story lines with strong character developments and shocking emotional moments. On top of the insane action scenes. A few MINOR flaws in s5/6 but nothing to affect my rating.
Season 7- 9/10 - still very good but seemed slightly rushed and had some illogical moments such as the absurd plot to go beyond the wall.
Season 8- 3/10 wow. A bit of a joke really. Terrible writing. Nothing makes sense. The writers have butchered many character's developments and given hardly any satisfying conclusions to their story arcs. Brans story had no pay off at all, Jaime's redemption arc was cut off instantly with no reason. Night Kings death was underwhelming. No Sansa and Cersei confrontation of any sort which I would have liked to see. Unbelievable plot armour. Rhaegal taken down by first 3 shots, yet Drogon dodges an Iron fleets worth of Scorpions which weren't firing just to serve the plot. I guess Euron forgot about Dany's dragon and her forces. Jon does nothing (why was he resurrected? ) I kind of like Danaerys going mad but not to that degree - It went too far too fast with no substantial development to justify her killing thousands of innocents. Major let downs and bad dialogue. Good moments are very few and far between. Only scores 3 due to effort by cast and directing, and the few decent scenes. Also, Cersei, the best character, gets 20 minutes screen time all season and does nothing.
Overall- 9/10 purely on S1-7