Taking into account that Telltale Games has created a fully realized House Forrester, complete with background rich characters from a single line in the novels and stays within TV show and novel cannon is nothing short of amazing. Season 1's decisions will weigh heavily on your conscience and you'll make many sacrifices along the way, direct or otherwise, in typical Game of Thrones fashion.
+Perfect voice acting
+Incredibly difficult decisions
+Cameos from major show characters (also voiced by the actors)
-Lack of closure
-Having to wait for Season 2
-Winter is coming
It's no secret that Telltale Games has figured out the formula for their great success: Take a pre-established franchise, write a compelling narrative around it full of interesting characters and dialogue, utilize amazing voice actors, make the player decide between incredibly difficult decisions, and finally split up into episodic content with cliffhangers at the end of each episode leaving you wanting more.