The sequel, Middle-earth: Shadow of War, features a larger game world and a more sophisticated Nemesis System, with more of the game world affected by your actions, including entire strongholds that can be updated by the enemy if you fail to pull off a raid on them. It also features a storyline that reads like bad Tolkien fanfiction, complete with the hero forging his own Ring of Power (what?) and going up against Sauron directly (excuse me?).
Middle-earth: Shadow of War will be released on 22 August this year.