Ezio - and through him, Desmond - uses the keys to witness Altaïr's memories following the death of Al Mualim. These show Altaïr having lost his wife and youngest son in the midst of a coup d'etat within the Assassins followed by a twenty-year self-imposed exile. Eventually, Altaïr returned to Masyaf, killed the usurper, and retook control. Near death, Altaïr inscribed the keys with his memories and gave them to his friend Niccoló to hide at a distant location, before disappearing into his library forever. In Ezio's present, he and Sofia go to Masyaf and open the library to find Altaïr's corpse and the Piece of Eden he possessed. Ezio leaves the Piece as well as his assassin tools, and speaks directly to Desmond, knowing he was only a conduit for him, and hopes he finds the answer he needs Cosplay Australia
. Desmond is then approached by another holographic figure, Jupiter, who explains that their society had tried to use technology to stop the destruction of the earth's surface by a massive solar flare but failed, but they had stored their repository of knowledge in several vaults linked to a central vault which Desmond must use to stop another similar flare that will occur soon; Desmond recognizes the location in New England. Desmond wakes up from his coma, finding Rebecca, Shaun, and to his surprise, his father William, there. After learning that Lucy died from his stabbing, he informs of the location in New York, the Temple that will save humanity.
Originally it was announced as Assassin's Creed: Lost Legacy, and conceptualized as a Nintendo 3DS title focusing on Ezio traveling to Masyaf Devil May Cry Costume
. However, on July 15, 2011, it was announced as cancelled. Although the reason behind such "cancelation", was that Ubisoft had decided to expand the idea further, cancel the 3DS development and fully shifting all development duties towards PlayStation 3, Xbox 360 and PC to release the game as a full-fledged main installment of the franchise. The original plot remained, and evolved into the plot seen in the final game, which became Assassin's Creed: Revelations. Included were many new systems and additional weapons such as bomb-crafting, allowing the player to create explosive, distraction and tactical bombs, using materials found throughout the world and on Assassin's Guild missions. The hookblade was also introduced, which can be used in free-running (to travel along zip wires and climb more easily) and in combat (to manipulate enemies). Eagle Vision was upgraded into the Eagle Sense, allowing Ezio to not only see where his enemies and targets are but also, where they have been and where they are moving to. As the player progresses through, Ezio can train new recruits to defend "dens" (Assassin HQs) and an upgraded Assassin's missions section called "Mediterranean Defense" in which the player works to strip control of various cities from Templar hands. The multiplayer mode returned in Revelations, with more characters, modes, and maps, and by advancing up through levels of experience, the player learns more about Abstergo's history.
Desmond and his allies arrive at the Temple entrance in a cave in the New York area on October 31, 2012, and open its door using the Apple Of Eden, discovering a larger chamber of Precursor technology behind it, including another door requiring a key. Desmond suddenly falls into a fugue state, and is put into the Animus. There, he experiences the memories of a half Mohawk, half British man named Ratonhnhaké:ton, later dubbed Connor (Achilles calls him this in memory of his dead son), who lived through the American Revolution, as well as Connor's father, Haytham Kenway, who is later revealed as a British agent of the Templars. Kenway had gone to the Colonies in America with a stolen medallion, recruited Templar allies including Charles Lee, and worked to gain the trust of the Mohawk people to get them to show him the location of the Temple, but to his annoyance, the medallion did not open the Temple for him. Connor, as a young boy, witnesses Lee and his troops set fire to his village, killing his mother Dragon Nest Costume
; years later, he is shown a Piece of Eden, through which Juno speaks to him and instructs him to get training from Master Assassin Achilles Davenport. Achilles takes Connor and teaches him about Assassins and introduces him to Patriots in the Revolution, through which Connor stops several Templar plans to disrupt their efforts including an assassination attempt against George Washington. During these memories, Desmond does recover from the fugue state, and helps his allies to recover power sources to power the Temple scattered about the globe, including one held by Abstergo.