Easter eggs

The Assassin's Creed series contains some easter eggs inside its games, and many other games had Easter Eggs related to Assassin's Creed within them, such as Metal Gear Solid 4, Grand Theft Auto IV and the 2008 version of Prince of Persia. This page lists them.

Assassin's Creed

 * An arrangement of windows on certain buildings form the face of Optimus Prime in truck mode from the Transformers franchise.
 * Upon leaving Masyaf for the first time, one of the Assassins in the Kingdom is marked as an enemy (glowing red when seen through Eagle Vision). He can be silently assassinated with no consequences, but openly attacking him will prompt the other Assassins to attack you.
 * This Assassin is actually Jamal, the traitor inside the order that, along with Masun, opened the gates for the Templar attack at Masyaf. He was originally set to be a mission target to be assassinated, but the mission was cut, and the character remained as a minor Easter Egg.

Mario
300px|right At the beginning of the third sequence, Ezio's Uncle says "It's-a-me! Mario!" which is a reference to Super Mario Bros. To further support this is Mario Auditore's Italian nationality, like Mario of Super Mario Bros.

Another reference to Nintendo's Mario is that both Marios wear red, while their supporting characters (the Assassin's Creed Mario's mercenaries and Nintendo Mario's brother, Luigi) wear green.

Giant Octopus
A giant octopus can be found in the Assassin's Tomb of Santa Maria Della Visitazione. The octopus appears before and after activating the lever that brings out the bars used to traverse the final chamber.

To find the giant octopus, you must look down into the water near the lever for one minute. Once a minute or so has passed, a cut-scene plays, showing a large octopus swimming by. A second cutscene can be activated if the player pulls the lever and looks down again. The cut-scene shows Ezio narrowly dodging the octopus's tentacle, before it swims away.

Altaïr's Outfit
right|300px Altaïr's outfit from Assassin's Creed can be unlocked via Uplay by purchasing it for 30 points. It does not add or change any stat points for Ezio. It can also be worn in conjunction with any cape, allowing the player to wear the Altaïr outfit and still maintain 0% notoriety with the Medici or Venetian Capes. A glitch here is that, when used with the double blades, Ezio makes the movement with his right hand though no blade appears.

Ghosts of the Past
thumb|300px|left After downloading the Bonfire of the Vanities DLC, Ezio is briefly able to see a vision of his whole family. After meeting up with Niccolò Machiavelli, return to Palazzo Auditore and step into the center of the courtyard. Ezio will enter a mode similar to his Eagle Vision, and be able to see the figures of his parents and all of his siblings around the palazzo. Once you leave, the vision will disappear and you will not be able to see it again. (The vision cannot be viewed if you have completed Bonfire of the Vanities, so make sure to do this beforehand).

Harry Potter Reference
When Ezio bumps into a guard currently guarding something, and after rudely shoving you away, one of the many things he will taunt Ezio with is "The last man I put in the hole was eaten by rats. All we found a week after was a finger!" This may be a rather vague reference to Harry Potter's Peter Pettigrew, of whom all the authorities found was a finger, and who turns into a rat.

Project Legacy
In the Sanctuary, if you look at one of Lucy's Monitors, you see the Memories menu of Assassin's Creed: Project Legacy.

Solid Snake
Just before meeting Leonardo da Vinci for the first time in the game, Ezio will come across a factory-made cardboard box that is completely unsuitable for the era; though he looks away when Leonardo comes around the corner. This is a reference to the Metal Gear Solid series, as Solid Snake's (the series' protagonist) signature stealth move is to hide in a box or crate.

Raiden
A second Metal Gear Solid tribute is the Raiden suit, available to all who complete every challenge in the Animus Virtual Training Program with at least a bronze medal.

Mario References
One of the achievements in Assassins Creed: Brotherhood is titled "Principessa in Another Castello." This translates to Princess in Another Castle, which is what would be told to Mario in the original Mario games when he defeated Bowser's minions in their castles.

Another Mario reference is the Plumber achievement, which shows the picture of a.

Montreal
During one of the memories in Sequence 6, whilst escorting Bartolomeo d'Alviano and his Mercenaries disguised as French soldiers, a French guard asks Ezio Auditore which region of France he hails from, to which he replies "Montreal." This is likely a reference to Ubisoft Montreal, the developers of the Assassin's Creed series.

Machiavelli's Works
Shortly after Ezio successfully enlisted the help of the three other guilds, Machiavelli asked Ezio how he had managed it. Ezio simply answered that it was "Virtù," a theory about the spirit of leadership that Machiavelli was later known to have theorized.

Additionally, at the end of Sequence 7, Machiavelli stated that "I intend to write a book about you one day" to Ezio, who then responded with "If you do, make it short." This is clearly a reference to Machiavelli's notoriously short book, "The Prince."

Assassin's Creed in other media
The stories and characters of Assassin's Creed are not only featured in the official video games, but in other media as well.

Grand Theft Auto IV
After completing a set of assassination missions for a mysterious figure called the Fixer, the player will receive an achievement/trophy called Assassin's Greed which is a direct play on the Assassin's Creed name.

LittleBig Planet
As a part of their promotion for Assassin's Creed II, Ubisoft released a downloadable costume for the PS3 exclusive LittleBig Planet, Ezio's "Purple Assassin" Costume on December 8, 2009.

Metal Gear Solid 4
On April Fools' Day 2008, it was revealed that an Altaïr costume for Snake could be unlocked in the game Metal Gear Solid 4. Hideo Kojima (from Konami, the creators of Metal Gear Solid 4) later announced that this was no joke, and that the costume would really be unlocked if the player did "something special." In order to unlock the costume, the player must either acquire the "Assassin Emblem" (a nod to the game's title), or input a password in the Extras section.

The password has been revealed to be aottrykmyn

Prince of Persia (2008)
Altaïr's costume is available as a free DLC for use by The Prince.

The Saboteur (2009)
The main protagonist Sean Delvin earns a red racing car with white stripes named Altaïr, which is nicknamed "The Flying Eagle."

Prince of Persia: The Forgotten Sands
Ezio's costume is available for purchase via Uplay for 30 points.

Naruto: The Broken Bond
Completing all the bounty hunter missions in the game will award you with the achievement "Naruto's Creed."