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An easter egg is an intentional hidden message, inside joke, or secret reference to media outside of the game's universe. This is a list of all the Easter eggs that can be seen throughout Watch Dogs 2.
Hidden Cow Level
In the first intro mission, after Marcus gets through parts of CTOS that other hackers couldn't, Sitara calls it the hidden cow level. This is a reference to a hidden level in Diablo 2, dubbed the "cow level".
At the end of the first intro level, Wrench greets Marcus with the Vulcan Salute, a well-known hand sign from the Star Trek franchise. Later in the game, Wrench jokingly refers to Marcus as Wesley Crusher, a highly unpopular Star Trek character, to which Marcus replies "I'm clearly Sisko", who is the protagonist of the Deep Space Nine series.
Merchant of Death
While introducing Marcus to the 3D Printer, Wrench calls it a "Hipster Merchant of Death." This is a reference to the first book in D.J. MacHale's "Pendragon" series, The Merchant of Death. Additionally, this could be a reference to Alfred Nobel, as his nickname was 'The Merchant Of Death'.
In the mission Limp Nudle, Marcus may speak to a Nudle employee on the first floor and ask them about Brody Goodale's harassment of Horatio. As they speak, Marcus introduces himself as Felix Leiter, an obvious cover name. Felix Leiter is a character from the James Bond franchise, being Bond's CIA counterpart.
In the mission Haum Sweet Haum, Marcus breaks into a sample smart house owned by Haum Electronics. The Security Robots that are patrolling the house are named after the ghosts from Pac-Man: Pinky, Blinky, Inky, and Clyde.
Aiden can be seen in a side mission in Watch Dogs 2. He arrives in San Francisco to shut down a human trafficking ring run by the Auntie Shu Gang and Bratva, however he was captured by the Bratva. Marcus Holloway, who was also investigating the trafficking ring, breaks into where they're holding him and hacks Aiden's phone, which was in possession of a guard (along with his Baton). Aiden sees the distracted guard, then glances at the cell camera. He then goes to the guard and defeats him, taking the baton and phone with him before starting a miniature blackout to cover his escape.
Aiden Pearce's Phone
When a civilian is calling 9-1-1 on Marcus, if he goes up to them and snatches their phone away, it's possible to use the camera to zoom in really closely on the phone, and see that it has the same layout as Aiden Pearce's phone from Watch Dogs, including the Progression app, Skills Tree, Car on Demand, Fixer Contracts, the DedSec Field Guide, Digital Trips, NVZN, Cash Run, Challenges, Media App, SongSneak, City Hotspots and Leaderboards.
During the mission Haum Sweet Haum, as DedSec drives to Sutro Tower, Wrench claims that he doesn't want to swim with stingrays because it "killed the Crocodile Hunter", and Sitara agrees. This is a reference to the real life wildlife expert, Steve Irwin aka the Crocodile Hunter, who was killed by a stingray in 2006.
When one walks into a random female NPC, the NPC may rap the line, "You spit imma sit, we'll see where we land." This is a line from the song Aaron Burr, Sir, from the famous musical Hamilton.
When Marcus talks to Lenni at the start of the DLC mission Caustic Progress, he says "The first rule of Asshole Club is you do not talk about Asshole Club", a reference to the iconic line "The first rule of Fight Club is you do not talk about Fight Club" from the movie Fight Club.
Rainbow Six Siege
Signs for Red House Telecoms can be found around the city. A billboard for Red House can be found on the Bank map of Rainbow Six Siege.
The yacht that is owned by the Bratva is named "Tachanka." Tachanka is also the name of a Russian operator from Rainbow Six Siege.
Statues seen inside BDSMania during the Moscow Gambit mission later appear in the Villa map of Rainbow Six Siege.
Far Cry 3: Blood Dragon
Movie posters for a Hook Motion Pictures movie called "Disbeliever" seem to be an Easter egg for Assassin's Creed. The upside down triangle at the top is a reference to Erudito, an anti-Abstergo hacker group. Erudito's symbol is the upside down Abstergo logo. The person pictured in the poster is similar in appearance to Owen Meyers, an Assassin from the Assassin's Creed: Last Descendants series. Owen Meyers relived historical events in New York City, which is the city depicted in the poster. Both Watch Dogs 2 and Assassin's Creed: Last Descendants were released in 2016.
In the mission Hello World, Sitara tells Marcus that his mission, should he choose to accept it, is to break into CTOS HQ. The "should you choose to accept it" part is a direct reference to the Mission: Impossible film series, as it is a famous quote that derived from the film series.
Chicago police car
In the mission Cyberdriver, as part of the movie set at HMP Studios, two Chicago Police Department Vessels can be seen, and can even be stolen in the mission. This is most likely not an Easter egg, but more of a mission feature, as the mission features a movie set with the Chicago PD cars being used as film props.
I Know Kung Fu
Right at the beginning of the game, Wrench introduces Marcus to the Research app to upgrade his skills, to which Marcus responds "like I Know Kung Fu!". This is a reference to the 1999 movie The Matrix, where Keanu Reeves uploads a wealth of martial arts knowledge into his brain and says "like I Know Kung Fu!".
Alien and Predator movies
During the last part of the mission Hacker War, Marcus has a full-blown conversation with Wrench about whether Aliens (from the Alien movies) or Predator (obviously from the Predator movies) would win in a fight. Wrench even goes so far as to explicitly name Ridley Scott and James Cameron; Scott the director of the first movie, Alien, and Cameron the director of the sequel, Aliens. They also mention the possibility of Batman and Superman fighting the creatures in their own movie.
Later, in the mission Shanghaied, when Marcus asks Sitara which shipping container to look for, Sitara jokingly answers "LV-426." Marcus then playfully responds "Seriously? You're testing my Geek-Fu?" In the Alien universe, LV-426 is the planet from which the xenomorphs (aliens) originate from.
NPC's can be over heard talking about getting tattoos of the scene where Jack Torrance breaking through a door saying "Here's Johnny!" referencing the scene from The Shining.
Marcus can talk to Wrench, and one of the discussions is about Star Wars characters and places, including Lando Calrissian, Chewbacca, and Cloud City.
In Shanghaied, Marcus pulls up a "That's no moon." quote when waiting and spotting for Josh's drone.
In Bad Medicine, Marcus stares at a thermal exhaust port and wonders if Emperor Palpatine is at the bottom. Josh replied that he was thrown into the reactor core. This is a clear reference to the Battle of Endor in Star Wars: Return of the Jedi.
The mission Johnny 5, Where R U? is a reference to the robot Johnny 5, who is the protagonist of the 1986 film, Short Circuit. During the same mission, Marcus will also sing "Holdin' Out for a Hero" by Bonnie Tyler, which played during the chase scene in Short Circuit 2.
Multiple references are made to Ubisoft itself, the company who made Watch Dogs 2:
- The mission Ubistolen starts with an NPC talking about leaks at Ubisoft concerning projects like Unity, Syndicate, and Osiris. These names are references to Assassin's Creed: Unity, Assassin's Creed: Syndicate, and Osiris, a canceled game which is being reworked as the newest installment in the Assassin's Creed franchise. The name of the mission itself is also a direct reference to Ubisoft.
- The exterior of the Ubisoft building features posters for 2016's Assassin's Creed film.
- In the interior, pictures of Assassin's Creed: Unity, Far Cry: Primal, and Rainbow Six Siege, all Ubisoft games, can be seen.
- Some of the employees can be heard talking about Just Dance, another Ubisoft game.
- The pawn shops, like in the first Watch Dogs game, and the San Francisco Hackerspace, have Ubisoft arcade games in them.
- In the mission "They're on a Boat!", one of the gang members suggested another member that he should stop buying Ubisoft's stock.
- The hat that Marcus wears at Swelter Skelter has a stylized "11011" design on the front, which is binary for "27". The first Watch Dogs game came out for most platforms on May 27, 2014.
The Crew 2
Companies that appear in Watch Dogs 2, such as Eat Bushimura, Staroger Coffee, Everyzon, Chaebung Electronics, Arabian Airways and Rocktyre, all later appear as companies in Ubisoft's The Crew 2.
Grand Theft Auto IV
There is a pedestrian that can be spotted around San Francisco who bears a close resemblance to Niko Bellic, the protagonist of Grand Theft Auto IV. The man in question wears blue track pants, a brown leather jacket over a pale yellow shirt, and has his hair cut in a similar style to Niko's. He can most often be found inside Gary's Games and Glory or around other parts of Downtown SF.
There is a cul-de-sac street in the Elmhurst district of Oakland which is most likely modeled after Grove Street in the video game Grand Theft Auto: San Andreas. The area features a two-story housed based on CJ's house, a small house similar to that belonging to Sweet and a two-story house where OG Loc would have lived. In addition, the player may occasionally see a green muscle car with a man dressed in green dancing by it; this is another reference to GTA: San Andreas, as the protagonist gang (the Grove Street Families) wore green, and is also a reference to the green Sabre muscle car which was used to kill Sweet in a drive-by shooting but accidentally killed their mother instead.
According to the My Auntie Shu #1 audio tape, Auntie Shu's nephew references her as the Chinese version of the Tweety-Bird granny, referencing the character, Emma Webster, also known as Granny, and her pet yellow canary, Tweety, from the famous Warner Brothers cartoon series, Looney Tunes.