Mostly Shadow of Mordor, it's such a great game. It's a hallmark of a great game when it creates really great emergent stories, and the Nemesis System works wonderfully for that purpose. Also, with how the Uruks move dynamically around the world it can set up some situations where missions suddenly become exponentially more difficult than they would have been under different circumstances. For example, I was doing a mission where I needed to confront and kill an Uruk captain. Seemed like a simple enough mission, I even sniped all 5 of his bodyguards with elf-shot before hopping down from my perch to confront him. Easy peasy lemon squeezy, right? Well, it turns out he had a horn he used to alert nearby Uruks and summon them and it turns out there were 3 other captains nearby at the time, so suddenly a 1 on 1 fight became a 1 on 15, including 4 captains. Oops. What followed was a tense 15 minute battle/cat and mouse game as I systematically whittled down the numbers while trying my best to not get surrounded and overwhelmed, until the numbers got to a point that I could manage a straight up fight. It was fantastic.