Assassin's Creed 2's official Doujinshi novel was a game related novel by game developer Eidos. It was usually based on the characters and plot in the game and closely related to the game's plot. There were a few official Doujinshi novels that were released, some of which were loved by players, while others were banned because the content was too violent or unsuitable for children. Assassin's Creed 2's official Doujin novel had many versions, including Chinese and English versions. They were usually written by famous web novels such as Xiao Ding, Maoni, and Wandering Frog.