User blog comment:Master Sima Yi/Assassinews 19-03-'14 – Two Assassin's Creeds for 2014?: Unity and Comet/@comment-24760042-20140703142141

Excluding AC1 it seems they do 3 main games around the same era.

AC2, ACB and ACR: late 15th century and early 16th century

AC3, AC4BF and ACU: 18th century

So after Unity do you guys think they will change eras?

And if so what era do you think they will go to next?