The game's multiplayer, being handled by a 100-strong team at Ubisoft Annecy, features a range of new maps and modes, including versions of Capture The Flag and Deathmatch.
Players can level up to a maximum of 50 to access items, perks and abilities, as well as unlock secrets about Abstergo Industries, the multinational corporation that trains Templar killers.
Ubisoft Annecy showed off a video in which Dr Warren Vidic, head of research for genetic memory at Abstergo, said that multiplayer competitors will be able to enter the inner chambers and learn the Templar secrets that will allow them to "see the world for what it really is".
In an interview with Digital Spy, Assassin's Creed: Revelations multiplayer director Damien Kieken said that the storyline is "pretty deep", and was also a challenge to create.
"If you really want to know more things about the Templars, about Abstergo, about Dr Warren Vidic, the Assassins and the first civilisation, and all that stuff... now you can really see more in the multiplayer," he said.
"You will unlock people speaking to you and giving you some secrets and you will also unlock documents, historical pictures and things like that."
Kieken added: "It was a very big challenge for us [to create the narrative] - how do you propose a storyline in a multiplayer?
"If you are two players and you just want to play together without the storyline, here, what we did in the rematch flow between two games, we will display you the storyline and then you have the choice of watching it or skipping it. If you skip it, we will put it away in the menu for you to watch later. So you can be always doing what you want."
Asked how important it was to more closely mesh together the single player and multiplayer in Revelations, Kieken said: "We have two camps - the Assassins and the Templars - and we really want to expand on the Templars because they are not the bad guys, they just see things differently. If we can show you the other side if will be very interesting to the player."
Assassin's Creed: Revelations will be released for PS3, Xbox 360 and PC on November 15.
> Assassin's Creed: Revelations multiplayer preview
> Assassin's Creed: Revelations multiplayer interview: Ubisoft on improvements, changes