User blog comment:MB543/The Crimson Polls III: 14/@comment-24760042-20140401150420/@comment-13471981-20140401154618

Not by himself. Corey May has probably contributed to the story of each game in some way, but he was not always the lead writer. The games he has primarily written himself are Assassin's Creed, Assassin's Creed II and Assassin's Creed III. Jeffrey Johalem was the lead of writer of Brotherhood, Darby McDevitt the lead writer of Revelations and Black Flag.