In case you are not aware, Assassin's Creed is a series of sci-fi video games which depicts a centuries long struggle between two camps, the Assassin's and the Templars.
The games take place in modern times where the character uses a computer immersion device to relive the memories of certain people (usually assassins) from history involved in the struggle.
Games have been set in places such as Medieval middle east, mid Ottoman era Istanbul, Renaissance Rome & Florence, Revolutionary American colonies, Revolution era Paris, the Caribbean during the Golden Age of Pirates and finally the most recent game is set in Victorian London. More specifically, 1888 London, you even start in Whitechapel.
Jack comes into the game as part of an add-on to the main story, I have not played it myself, but I think the gist of it is the player, as an Assassin, is forced to match whits with Jack as he goes on his murderous spree, likely on behalf of the Templars. I'm guessing that this will be tied into the Royal Conspiracy. Anyways, here's the trailer. They put Jack in a stupid hood and top hat. lol. But it's related to our subject and thought some might be interested to at least see it.