https://www.gamespot.com/articles/how-assassins-creeds-year-off-affected-the-franchi/1100-6454370/

For several years, Assassin's Creed was an annual occurrence. However, with ideas running dry, and franchise fatigue setting in, Ubisoft decided to take a year off from the globetrotting series.

This week, however, the staple returns. It's been two years since Assassin's Creed Syndicate, and with the Oct. 27 release of Assassin's Creed: Origins, Ubisoft is taking us back to the beginning of the storyline, in Northern Africa, in the shoes of protagonist Bayek.