This game is the shortest Assassins Creed game with only 7 main memory sequences.
While Assassin's Creed: Unity (2014) was developed specifically for the next generation consoles (Xbox One, PS4) Assassin's Creed: Rogue was made exclusively for the last generation consoles (Xbox 360, PS3) as compensation as well as to bridge Assassin's Creed III, IV, and Unity together.
Some Templars and assassins from previous installments make an appearance; like: Haytham Kenway, William Johnson, Achillies Davenport and Adewale
This installment is the first Assassin's Creed game to break with the unofficial tradition of having a new protagonist while the title doesn't include a number. In the past, a chronological installment would introduce a new lead.
In the present-day setting, if you look on the desk of the player's Animus, you can see a magazine pile or two with the Far Cry 3 (2012) cover on top of them. Far Cry is another game series made by Ubisoft, who make Assassin's Creed.