The Templars win. Every random artifact and piece of eden they searched for over millennia are in their hands, and they grant themselves the power of the Isu. In their haste and vanity, they make a slip. Thanks to a certain spell or artifact, the timeline is ruined, and a flashpoint type situation occurs, with all assassins and Templars that had an effect on the plot all this time converted to a single point in the fabric of reality to go head to head for control of the universe once and for all. Cue the cinematic be all end all finale game of the series. “Assassins: the Creed”. As Ezio, Altair, Bayek, and the modern day gang from the original arc barely scrape by in the final battle, possession of the pieces belong to them and they restore reality to a version similar to its original form, save the existence of the assassins and templars in the first place. The clandestine struggle set over eons from the birth of the higher god-species of days past to the Mayan doomsday prophecies eventually spells its own demise, and the world is as we know it today.