Assassin's Creed Lineage fills in the back story of ACII by focusing on the exploits of Ezio's father, Giovanni Auditore da Firenze, a master Assassin. Ezio makes a short cameo in the first segment, but he is young and naive, and not yet an important player in the saga. The most noticeable element of the short is how eerily similar everything is to the game. That's because the environments were rendered directly from the Anvil Engine, the same engine used in both Assassin'sCreed games. Ubisoft also cast the same actors in the film that were digitally interpreted for the videogame and inserted using a green screen. The result is a world that looks extremely similar to the the game but is strangely realistic. It's often difficult to distinguish which elements are computer generated and which items might actually exist.