Ubisoft delved into the "perfect conditions for the perfect storm" behind 2014's Assassin's Creed Unity's launch issues.
As part of the talk '10 Years of Evolution of the Assassin's Creed Brand' at GDC 2018, creative director Jean Guesdon explained how Ubisoft iterated on each game as it built the franchise.
Unity started development in 2011, after work on Brotherhood had finished, and was designed to be the first real next-gen game for then upcoming consoles PS4 and Xbox One.