Warner Brothers Granted Patent for Nemesis System from Middle Earth Video Games

https://www.patentarcade.com/2021/02/warner-brothers-granted-patent-for-nemesis-system-from-middle-earth-video-games.html

U.S. Patent No. 10,926,179, Nemesis characters, nemesis forts, social vendettas and followers in computer games, filed March 2015; an orc that survives may level up and gain abilities, and its dialogue may reference the previous encounter when it taunts the player.

Middle-earth: Shadow of Mordor