User blog comment:Master Sima Yi/Assassinews 03-12-'14 — New Assassin's Creed in Victorian London leaked/@comment-24378370-20150101055941/@comment-24849873-20150102042912

I know they take a few years to develop each game but Victory was already being made when Unity was al launch so they would not have allot of time to change all the mistakes in victory that were very unpleasant in Unity e.g. they decided to make a den defense type game in AC3 but when they saw how unpopular it was in ACR they had to cut it out and they wasted allot of time. This is another problem with creating two games at once.