After reading a couple of reviews of this game, I didn't have high hopes. But I don't agree with most of them so it seems!
The story is amazing, especially if you're a big fan of the books and tv-serie. You'll recognize a couple of people in-game (Jeor Mormont, Varys the Spider, Cersei Lannister) and people (NPCs) are talking about other characters of the books around you when you walk through the world.
You play with two characters at once, you'll switch between the two characters every chapter, like in the books. Mors Westford is a knight of the Night's Watch and Alester Sarwyck is a Red Priest of R'hllor who is returning home (Riverspring). The two stories come together in one of the chapters and you'll play with them at the same time (you can switch between characters in the gameplay).
You can upgrade skills (different types of swords and armor), special powers (Light of R'hllor and Skinchanger), attributes (like intelligence, strength, agility) and choose different perks.
The gameplay took some time to get used to. The thing that bothered me the most is that you use the right mousebutton constantly throughout the whole game; to press it all the time to move the camera was kinda weird.
Also the combat system needs some time to get used to. It's kinda turn based. You choose some actions/perks in a row of actionslots (three) and hope to counteract the things your enemy does. It gets pretty hectic sometimes when you got 5 or 6 enemies against you and two characters to command with actions for both to think of. But after a while it gets pretty easy if you get the hang of it, big fights become easy if you know which enemies to take out first and which action counteracts their actions (Interrupt, area damage) and which weapon is best against their armor.
You have an huge endless inventory, where you can choose the right armor and right weapons and right potions/poisons for you, or sell and buy new ones at the different merchants found in the major cities.
Lots of sidequests, lots of places to look for loot, just a couple of bugs which are easily resolved by restarting the game.
In my opinion a 7.5 out of 10. Maybe not worth the full amount, but great to get on Sale.
Took me about 28 hours to finish (with a lot of just standing around and listening to people around me and looking for loot). If you love games with a good story, get it!