A great mature RPG.
+ Very good, tight, quite lengthy and powerful story (with a fair amount of twists and multiple endings)
+ Interesting main and side characters
+ Good (sometimes perhaps a little too strict) to very good voice acting (and plenty at that)
+ Nicely written, believable dialogues (there are light dialogue trees too)
+ Thick character and world lore (accessible to people new to GOT by codex/encyclopedia pages ingame)
+ Nice music (composed by the TV show composer, it seems)
+ For fans: Familiar places (King's Landing, The Wall, ...) and cameos (Joer Mormont and Varys have their looks and voices from the TV show)
~ Combat can feel easy/underwhelming for perhaps 1/3 of the game. For some time I was wondering why I should care about what abilities to use even if it's always been fun to do so. Your character automatically attacks a random target or one you choose, with you moving him around if you will or by using active skills that use stamina or have a fixed cooldown. Sometimes my foes stood no chance even if I let my characters just do basic attacks. A few parts aren't winnable for story-reasons. I don't know anymore if you select a difficulty and which one I might have chosen. It got more interesting halfway through when I was able to utilize different skill sets and characters (usually two at a time) at a regular rate (it changes for many parts for story-reasons, which I am welcoming, it shouldn't subjugate to the gameplay mechanics, this game should be mainly about it's characters and the story and it is).
~ Character development/gear usage seems a little strict. Depending on your very first choices in the game your character is set on a rather narrow path regarding the weapons and armor he should use. This can be important later on because there is a "rock, paper, scissors" system in place that encourages you to use specific armor to counter specific enemies and, on the other hand, use specific gear to fight specific enemies. Upon leveling up you can put skill points in other, "unusal" weapon/armor areas but that's not very wise since it requires more points to get those up and you cannot use any skills for weapon sets unfamiliar to your class. So, for example if you choose a class using two-handed weapons and heavy armor in the beginning you will want to stick with just two-handed weapons and heavy armor for many parts even if you should loot or want to buy one-handed and lightly armored gear, and even if you should encounter enemies that use equipment that literally works like scissors to your paper-based gear. You can use everything at any time - but you won't be very effective. Around halfway through you can select a secondary class where things get truly interestings and where you can actually mix things up without feeling like being on a disadvantage.
~ Should you get ideas to fight random mobs to level up unusual/inexperienced areas to redeem for the lacking bonuses/skills: That won't work. Because enemies aren't randomized. Cleared areas won't have enemies spawn unless the story wants to. Not even random brigands or wildlife or something. This can add to the immersion in some ways, for the very least makes post-combat exploration easier (the two main characters have special skills to find hidden objects) and there are plenty of enemies to fight and good numbers of quests to do before you reach the end of the game, and if you stick to the class and thus weapon/armor selections you made early on you'll probably have no serious problems getting through this game. But straying off from these pre-defined leveling paths may leave you very vulnerable later on with no other way to deal with it but bite yourself through it.
~ Combat can be a little mess at times, particularily indoors with the camera not getting a good look on things. Not too dramatic since you have a pause button that almost freezes time when issuing commands, but still. The straightforward/head-on mechanics don't work well if you for example try to shoot someone with a bow from an elevated position as I tried in King's Landing. It would trigger a mass rush of all allied and hostile characters to clash into each other around several corners with my bowman having struggles to follow after.
- Some more face models and clothing may not have hurt. The main and some special side characters aside most other characters can look a little generic, even if they are never really unfitting by looks or voice. It's not too dramatic but more often than not you'll see the pretty much same gown or rags on female characters, at times same faces even, and would have hard times to differ between some side characters if not for their varying names and voice actors.
+ That being said, those characters for which the devs had more love/time for really look nice and impressive, with scars and veins and freckles and such. Overall the game is nicely-looking and very immersive even if it won't sate the high-res texture junkies. And it has a clear and nice interface and runs very stable (thanks to the Unreal Engine, I guess) even if I had some odd mini-freezing when turning the camera around some places but that might be my relatively old system and not the game.