The Nemesis System: Middle-earth: Shadow of Mordor creates a new type of emergent relationship between players and enemies. The Nemesis System tracks and remembers player actions to dynamically create and evolve unique enemies and scenarios for each and every player. From visual characteristics, to personality traits, to combat behaviors and AI, to mission scenarios, to strengths and weaknesses – the enemies in Shadow of Mordor constantly evolve and adapt, leading to unique stories and personal relationships every time you play the game. If you experience multiple playthroughs or compare your stories with other players, you will see how unique these experiences can be.