Easter Eggs

are hidden surprises throughout the Call of Duty series. They are most prominent in Zombies, in the games developed by Treyarch. Some are easy and can be achieved alone, while others require a great deal of cooperation. Many of them, the most elaborate, can be used to gain an advantage either in a single-player campaign or multiplayer zombies game, and some unlock achievements. Every Nazi Zombies map has a secret song which plays after activating a number of objects.
Note that map or level features that are distinctive or interesting, like the Porter Justice posters in the Modern Warfare games, the ghosts in the Zombie Mode maps of Call of Duty: World at War, or the Brady Bunch house on Nuketown, are not noted here and can be found in the trivia pages of each map or level.
==Call of Duty: Finest Hour==
===Campaign===
*Underground Passage: Ghostly room, Kaiser Bear, Sticky Bear, German dance party
*Operation Little Saturn: Giant Red Apple
*Surrender at Aachen: Teddy Bear
*Come Out Fighting: UFO House, Secret Wall
*Depot Saboteurs: Sultan Room
==Call of Duty: United Offensive==
===Campaign===
*Crossroads (United Offensive): Cow: A giant cow in a hidden room.
==Call of Duty: World at War==
===Campaign===
*Little Resistance: Ray Gun: Use a Ray Gun in the campaign.
===Nazi Zombies===
*Nacht der Untoten: A radio which plays different songs.
*Verrückt: Lullaby for a Dead Man (hidden song): Plays after flushing a toilet three times.
*Shi No Numa: Various easter eggs: a hidden song called The One and radio messages.
*Der Riese: Various easter eggs: This map contains a lot of different hidden surprises, including radio messages, the hidden song Beauty of Annihilation, and a game of hide and seek which unlocks an achievement.
*A message spelling out "THEDRWANTSTHEULTIMATEPOWERBASTARD" can be found within the four characters' biographies.
==Call of Duty: Modern Warfare 2==
===Campaign===
*No Russian: In the mission there are two cases which appears to be Modern Warfare 2 on the front and Modern Warfare on the back, it can be spotted on the back of the case as the player walks up the escalators or stairs to a store on the left
*S.S.D.D.: If using noclip console command, it is possible to see that one of Rangers that is sitting near several M16A4's at the start of the level has dog tags. On them, it is possible to see written
.It is part of the quote "And happiness is thought to depend on leisure; for we are busy that we may have leisure, and make war that we may live in peace."
===Campaign/Multiplayer===
*Teddy Bears: Various Teddy Bears are hidden throughout the single and multiplayer modes.
==Call of Duty: Black Ops==
===Main Menu===
*Central Intelligence Agency Data system: A computer accessible from the main menu room allows you to browse the contents of a CIA computer and enter various cheat codes. This allows you to access Dreamland and play Zork, which unlocks an achievement.
===Campaign===
*Numbers: Thundergun: Use a Thundergun in the campaign, simply on the first part destroy all Nova 6 barrels with a grenade or gun, there should be six of them. After the player shoots them all, Nova 6 will start coming out of them and the screen will shake. Then go to the back of the room and find the open tape dock. Hold the use button to pick up the cassete. The screen will shake again after this step. Continue to escape. When the player reaches the first armory behind the fridge, find the open tape dock on the left and hold the use button again, it will close. If the player did this right, then after a few seconds the screen should shake. Wait a few more seconds and hold the use button once again. The player should now have obtained the Thundergun.
===Multiplayer===
*Nuketown: Hidden song: If the heads of the mannequins are decapitated within 15 seconds, "Sympathy for the Devil" by The Rolling Stones is played. Requires multiple players to achieve. This may be hard, as the mannequins are randomly placed on the map every round, some might even spawn outside the map itself.
**The names on the mailboxes are the names of the protagonists in the campaign, Mason, Hudson and Woods. They will also have other names on them, which may be of some of the developers.
**The "Welcome to Nuketown" sign will change population according to how many players are currently in the game.
*Convoy: In the building on the top right of the map, there's a cargo transport board showing the names of all the maps in the game, including the First Strike and Escalation packs.
**There are "Wanted" posters all over the map of a boy named Raffaele Angelini at the age of 14. It says that he's wanted for "pwning noobs". It also says that his occupations are "Pwning noobs and being awesome" and that he's a very good Call of Duty player. Further down it says that he's very loved by the developers at Treyarch and Activision Blizzard. The posters are a tribute to a young fan who was diagnosed with leukemia and visited Treyarch Studios with his family.
**In the police station, posters can be found that says "Men with long hippie hair will be attended to last". Under it says that long hippie hair is: "Hair touching the eyebrows" or "Hair falling across the forehead" or "Hair covering the ears" or "Hair reaching below an ordinary shirt collar". There are also picture illustrating these.
**In the lower left house there's a rack of magazines named "Exposed", which on the front page says "Russians launch first primate into space, and it returns a... WHAT THE HELL IS THIS?" with a picture of a Space Monkey from Ascension. The same magazines is found on the third mission, Executive Order.
*In some buildings there are pictures of an early version of Hotel and the map Stockpile.
===Zombies===
*Note that the Zombies Mode easter eggs from World at War are also found in the Black Ops remakes.
====Nacht der Untoten====
*Undone (Hidden song): Plays after shooting several barrels outside.
*Songs play when the player shoots or melees the radio near the Mystery Box in the Help Room.
====Verrückt====
*Lullaby for a Dead Man (Hidden song): Activated when one of the toilets are flushed 3 times.
*Dentist's chair: In one of the first rooms you start out in, there is a dentist's chair in the center. Hold the action button while looking at the wheel on the base of it and you will hear a dentists tool running and a man screaming. 
====Shi No Numa====
*Radio: A radio which explains information about 115.
*The One (Hidden song): Dialing the telephone 3 times in the hut via Comm Room Section.
====Kino der Toten====
*115 (Hidden song): Plays a song when 3 pieces of meteor are activated.
*Film Reels/Radios: Three film reels can be found and played on the projector, and two radios can be activated to play recorded messages.
*Launch the small size rocket located on a table in the middle of one of the 4 rooms where you randomly teleports after pack-a-punch and before returning to the lobby. To launch it, simple press X or Square when looking at the rocket. ***You must first found and play all three film.
===="Five"====
*Telephones: Plays Eminem's "Won't Back Down" when all three red phones are activated. (Note if you have GCF enabled you will not be able to listen to this song due to lots of strong language. Instead it will be replaced with constantly repeating music from the zombies main menu)
====Dead Ops Arcade====
*The hidden zombie game mode itself, Dead Ops Arcade, is unlocked by entering "DOA"(Or 3ARC UNLOCK but this unlocks all the campaign and zombie maps) in the CIA Data System.
====Ascension====
*Casimir Mechanism: Long easter egg requiring four players and all available Wonder Weapons; gives everyone a Death Machine for 90 seconds.
*Abracadavre (hidden song). Plays after activating three teddy bears holding sickles.
*Character Dolls: Matryoshka dolls can be found that look like the original Nazi Zombies characters, which also talk, the quotes vary from player to doll, meaning there is a total of 16 quotes from the dolls.
*There are several telephones across the map that will sometimes ring. When answered, character quotes from "Five" can be heard.
====Call of the Dead====
*Stand-In: A variable length (Short in Solo, Long in Co-Op) easter egg which sends the usual Zombies characters to "Paradise". Unlocks two achievements for doing it in Co-op, as well as an individual one for Solo only.
*Not Ready to Die (Hidden song): Hidden song by Avenged Sevenfold. Activated by Holding the Action Button on three Meteor Fragments in the first three areas.
*Radios: Play messages recorded by Edward Richtofen.
====Shangri-La====
*Time Travel Will Tell: Another very long easter egg in which the player frees Gary And Brock.
*Pareidolia (Hidden song): Plays a song when three pieces of meteor are activated.
====Moon====
*Coming Home (Hidden song): Plays a song when three Teddy Bears are activated.
*Re-Damned: Hidden song which is activated by pressing the "use" button on a computer next to the Bio-Dome's door.
*8-bit Pareidolia: Hidden song which is activated by obtaining a disc and using it on a computer in the bottom floor of the labs.
*8-bit Coming Home: Hidden song which is activated by obtaining a disc and using it on a computer in Tunnel 6.
*Nightmare (Hidden song): Activated by having a player respawn after bleeding out while both excavators are down, resulting in them being trapped in spawn. (Only accessible in co-op).
*Richtofen's Grand Scheme: A long easter egg which consists of two parts, which must be completed in the following order:
**Cryogenic Slumber Party: An easter egg requiring the player to complete a number of steps to release Sam from the Pyramid, when the pyramid opens, all players will be granted a Death Machine for 90 seconds.
** Big Bang Theory: An easter egg requiring the players to complete a number of steps to launch three rockets to Earth. After they hit Earth, all players are granted with all eight perks for the remainder of the game. (Unlocks an Achievement on 360 and PC)
==Call of Duty: Black Ops (DS)==
===Campaign===
*Snowman room: Contains the Crossbow. Using it unlocks the weapon for multiplayer
==Call of Duty: Modern Warfare 3==
*Teddy Bear: In the multiplayer map "Lockdown" there is a building not far outside the map on the right of 3 hanging bodies; the rightmost window on this building can be flown through if using a Recon Drone or if the player is in Spectator, inside is an over sized Teddy Bear wielding Akimbo Gold Desert Eagles that use the Call of Duty 4 model.
*Arkaden Teddy Bear: In the map Arkaden, the food joint has a window the shows the kitchen. It has many grills and a giant bear (much like the bear in Lockdown but without the Desert Eagles).
*Porter: In the map Mission, there is writing above a teddy bear saying: "Porter wuz here", which is a reference to Jon Porter, who did art work for the Modern Warfare series. In the map Downturn, inside the subway station is a movie poster titled "Porter Justice 8: Final Justice".
*Wallstreet: In the Mission "Black Tuesday" when you reach the New York Stock Exchange there are TV-Screens on the Wall saying: IW, BLZ, SHG, WAR, ATVI and TREY these are References to Infinity Ward, Raven Software, Activision, Treyarch, Sledgehammer Games and Blizzard.
*Train map: When coming out of the tunnel with the wrecked train on Mind The Gap, there is a map of train directions with referencing names such as 'Black Cat Way', 'Verrückt', 'Infinity Station Ward', etc. And with weird names as well such as 'random place', 'no ammo road' etc. Also, this map is behind one of the original spawn points on Underground, the one that faces the actual subway station.
*Carbon: On phones in this map, there is an inscription - COD4.
*Shepherd: In the Special Ops mission Stay Sharp, after getting to Sandman, turn to your right without shooting any cutouts. You will see a picture of Shepherd with three throwing knives in it. One knife is in his eye; a reference to how he was killed in Modern Warfare 2.
*Ghost Voices: In the map Sanctuary, if the player goes to any of the four grassy patches near the middle of the map, they can hear ghostly voices saying "Hehe, look at me, daddy! Hehe!", "Don't get too close to the road, sweetie", "Hehehehehe.", and "Sarah, don't go too far!" The voices are sound clips taken from Davis Family Vacation.
*Village: Outside the map on the east corner, there is a partially revealed hatch with the numbers "4 8 15 16 23 42" engraved on the window, an reference to the hatch in the TV series "Lost".
*Stay Sharp: In the Special Ops mission Stay Sharp, when you spawn, turn back and go to the Jeep. In the trunk of the car there will be an AK-74u on top of a gun case, and in the driver seat there will also be a USP .45. Though the AK-47u gives the player an advantage in the course, the USP .45 that they pick from the jeep comes without a Tactical Knife, unlike the default one that comes in the mission.
==Call of Duty: Black Ops II==
===Campaign===
*When getting the gift in Section's room in the mission "Odysseus", if the player looks to the right when going through the door, there will be some sticky notes attached to the cupboard. One of them reads "Zombies are Coming". This sticky note is also seen in many multiplayer maps. This is a clear reference to the Zombies game mode.
*During the performance during the secret ending, at approximately five minutes and three seconds into the song, the player can see a zombie in the rafters on the left side of the screen.
===Multiplayer===
*If all mannequin heads are shot off in at least two minutes on Nuketown 2025, classic Atari games can be played on the screen in the center of the map.
*As you make your way inside the orange house in Nuketown head upstairs through the door and turn to your left. On the shelf if you look closely there are mini figures of the old Nuketown sign and the mannequins.
*Outside the multiplayer map of Nuketown there are flags with Spetznaz and Black Ops call signs on them, referring to factions of Call of Duty: Black Ops.
*In the map Hijacked upstairs in the bottom end on the map, there is a book that says "Edward Richtofen", just like the ones seen in the original Nuketown.
*In the map Express, there are three movie posters in the tunnel on the left side of the map. The titles are called "Hijacked", "Meltdown", and "Yemen". All referring to other playable maps in multiplayer.
*In the map Cove, if the player looks from the beach they can see the boat from the map Hijacked.
===Zombies===
====TranZit on Green Run====
*In the tunnel there is a green highway sign hanging from the roof with all but a few letters blacked out. The remaining letters spell "Day x /2 me," which could mean "Day crosses over to me"
*In the Diner area the signs letters that are lit spell "Now Die" and "On For You".
*Holding down the action button on the three Teddy Bears will activate the song Carrion.
**Teddy Bear one is found outside in Bus Depot sitting on a bench near the mini lava pit.
**Teddy Bear two is found in the Farm area. It is laying on a mat on the second floor of the house where one can build the Turret.
**Teddy Bear three is found in Town in the bar on the first floor.  After entering through the big entrance turn right and look at the booths.
* The main Easter Egg Tower of Babble, which unlocks an achievement. This easter egg can either be completed in Maxis' or Richtofen's favour.
====Die Rise====
*Holding down the action button on the three Teddy Bears will activate We All Fall Down.
**Teddy Bear one is on the floor below the spawn room next to the SVU-AS.
**Teddy Bear two is in the upturned restaurant (Buddha room) on the edge of the floor.
**Teddy Bear three is in the power room above a sewing machine.
* Another lengthy Easter Egg similar to Tranzit's, called High Maintenance, also unlocking an achievement. This easter egg can either be completed in Maxis' or Richtofen's favour.
====Mob of the Dead====
*At the beginning of match, if the player stands still, and doesn't revive their character, dying from the time limit in Afterlife, the song "Samantha's Lullaby" can be heard.
*If the player looks at the fireworks with a sniper rifle on the prison's roof, a flash of a creepy face along with a high-pitched scream will appear.
*Inputting the numbers 935 in the number pad will activate Where Are We Going.
**Inputting the number 115 in the number pad will make Brutus say either "NOT THIS TIME!" or "MAYBE NEXT TIME!" After which changing the numbers on the dial automatically to 666.
*Activate three whiskey bottles and the song "Rusty Cage" by Johnny Cash will play.
**Bottle one is in the library, on the bookshelf next to the Olympia.
**Bottle two is found in the infirmary near the roof, resting on a desk across from the blood baths.
**Bottle three is found at the far left side of the gate at the docks, hidden underneath a wooden crate.
* The primary Easter Egg, Pop Goes the Weasel, unlocks an achievement and has two player-determined endings: 'continuing the cycle' (in which the other mobsters kill Albert "Weasel" Arlington), and 'breaking the cycle', in which the other mobsters are killed by Arlington.
====Buried====
*Holding down the action button on the three Teddy Bears will activate Always Running.
**Teddy Bear one is next to a hay bale by Quick Revive.
**Teddy Bear two can be found in a barrel in the candy shop.
**Teddy Bear three be found in the mansion in the room with Double Tap.
* The main easter egg called Mined Games, which unlocks an achievement. This easter egg can either be completed in Maxis' or Richtofen's favour.
====Origins====
*Holding down the action button on the three green meteorite fragments will activate Archangel.
**In the spawn room right of the ancient chest on the other side of the bunk bed.
**On the second floor of the work station opposite the stairway under a bed.
**On the scaffolding left of the entrance to the Excavation Site entrance facing spawn area next to a crate.
*Holding down the action button on the three radios for three seconds will activate "Shepherd of Fire".
**On the scaffolding above the possible Maxis Drone part location.
**In the Freya Giant Robot head opposite the audio log.
**On the left edge of the fire area in The Crazy Place.
*Going prone on the number panels on Generator 1 and Generator 5 (the latter must be powered) will activate "Aether".
*A free Magna Collider can be acquired by collecting four discs with the Maxis Drone in various locations
**On high scaffolding planks furthest in front of Pack-A-Punch.
** On shattered beam above and in front of Stamin-Up.
** On corner of the church roof above the hole the tank exits from.
** In the smoldering rubble in the generator 2 trench.
*If the player goes to the Pack-A-Punch and scopes in to the top left of the Church, a jump scare will occur.
*The main easter egg for the map is called Little Lost Girl, which unlocks an achievement.
==Call of Duty: Ghosts==
===Campaign===
*In the mission "Struck Down", the player can find a trophy case with a few easter eggs in it. One trophy is in the shape of a gem saying "Award for most bushes cut and pots smashed" referencing The Legend of Zelda. Another is in the shape of a police box and says "Award for largest interior and smallest exterior" referencing Doctor Who. Lastly, there is an award saying "Given For: World Not Ending" awarded to 2012. This is a reference to the end of the Mayan calendar on December 21st, 2012, which some believed would mark the end of the world.
*In the mission "Clockwork" when Hesh is extracting the files, on the right hand side of the screen there will be a file named "Zork.exe", a reference to one of the earliest interactive fictional computer games.
===Multiplayer===
*In the maps Sovereign, Stormfront, Flooded, Siege and Freight, a teddy bear can be found. In Flooded, go to the half sunken bus in the river. On the side that is mostly out of the water there is a pipe going up one of the buildings. The player can climb this pipe and find a teddy bear wedged between the pipe and the building. In Stromfront, the teddy bear can be found in the "O" on the Superty Union logo on the skyscraper holding a bottle of alcohol. The teddy bear in Siege is found nailed to the inside of a pipe in the middle of the map. In Sovereign, a teddy bear is found inside an office wearing a hardhat. The last teddy bear is found outside the map on Freight.
* On the map Unearthed there is a crane with 3 boxes, shooting those boxes with an explosive weapon will then cause a room to fall down. Inside that room will be the Venom-X from Extinction, and its for one life only. If the player dies, the weapon will disappear.
*In the same room outside of Freight with the teddy bear, a stop sign, a hammer and a clock is laid on the floor. This is a reference to the phrase "Stop, Hammer Time". There are even more teddy bear easter eggs on other multiplayer maps.
*In the map Fog you can find a scarecrow dressed like Shepherd from Modern Warfare 2.
===Extinction===
*In Point of Contact, if the letters "LOL" are shot in order within five seconds with a Sniper Rifle on the Gil's Lodge Motel sign, the phrase will appear across the screen in bright blue and purple text. Every alien the players then kill for two minutes will explode into a pile of golden alien plush toys similar to those seen in the upstairs room of Nuketown 2025 in Call of Duty: Black Ops II.
*In Nightfall, if the player shoots the 4 electrical boxes on the telephone poles (eight total due to having to shoot both on either side of the pole) while they are zapping, the phrase "ZAP!!!" will appear across the screen in a similar fashion to Point of Contact and every alien killed for two minutes will drop a pile of snowman heads. This is easier to accomplish if the player maps the pattern of which electrical boxes before shooting. It is also easier to do if they use a weapon with a large magazine.
*In Awakening there is an easter egg where players can have mushrooms (similar to the ones in Super Mario Bros) pop out every time a player kills a Cryptid. This lasts for two minutes.
*If the player goes to the gas station in Exodus, and shoots at the correct letters on the sign (spelling out 'Neversoft') they'll get a secret intel. Also while they're doing the easter egg letters of the word they're trying to spell will appear on the screen to show they're doing it right.
==Call of Duty: Advanced Warfare==
===Campaign===
*In the mission "Fission" there is a poster inside the locker room. The people on the poster are the winners of "Game Jam" and were the people who thought of the car door shield.
===Multiplayer===
*On the map Detroit there is a cinema poster that show the characters D, G, and 2. This is a reference to a Wonder Weapon named the Wunderwaffe DG-2 which was first found on the Zombies map "Shi No Numa".
==Call of Duty: Black Ops III==
=== Campaign ===
* Life: A message spelling out "Dragovich, Kravchenko, Steiner. These men must die." can be found within the pre-text loading screen.
* On some screens scrolling text in Safehouses, the line "Loading boot_restart_variables: d:\server_base\all.ur.base-R-b.long.2.us", can be found.
===Multiplayer===
* Nuk3town: If the player shoots off all mannequin heads in Nuk3town within two minutes, all the mannequins attack the players as if they were zombies.
** If the player shoots off all mannequin arms in Nuk3town, all the mannequins follow the players but stop moving when the players look back towards them. This is a reference to the Weeping Angels in the T.V. show "Doctor Who".
===Zombies===
* Shadows of Evil: In the Mystery Box there is a Facehugger inside the right "slimeball". This is a reference to the movie franchise.
** A secret message from Dr. Maxis can be heard after completing the Pack-a-Punch ritual.
* The Giant: Many easter eggs from Der Riese return, such as a remixed version of "Beauty of Annihilation", a revised Fly Trap and several new radio messages.
** Stamin-Up or Deadshot Daiquiri can be obtained by throwing a Monkey Bomb in each teleporter while teleporting and pressing a button by the Pack-a-Punch machine.
* Der Eisendrache: Upon completing the main quest of the map, the player will unlock the achievement My Brother’s Keeper.
**Shooting three skulls (Wrath of the Ancients) around the map with the In Plain Sight GobbleGum activated will turn all zombies into skeletons. To revert this, the player must interact with three skulls located inside the church.
*Zetsubou No Shima: Upon completing the main quest of the map, the player will unlock the achievement Seeds of Doubt.
**Near the green water, a strange creature could be seen walking in the distance when reaching round 50.
*Gorod Krovi: Upon completing the main quest of the map, the player will unlock the achievement Love and War.
*Revelations: Upon completing the main quest of the map, the player will unlock the achievement For The Good Of All.
**After completing all of the previous main quests as well as For The Good Of All, the player will unlock the achievement A Better Tomorrow, will be awarded 1,000,000 XP and will be given the RK5 as a new starting weapon on every map.
*Nacht der Untoten:
*Verrückt:
*Shi No Numa: A musical easter egg can be found by shooting four pans in the Fishing Hut. Once shot, a small doll of Samantha Maxis will be spawned in the far left room of the Hut and once interacted with, will disappear. It will reappear on podiums of the bridge connecting to the Starting Building. The player must then shoot it until it is spawned upright at the Fishing Hut. It can then be interacted with to reward the player a free Max Ammo and the song, Samantha's Lullaby.
*Kino der Toten:
*Ascension: 
*Moon: A dog in a spacesuit appears in the distance after the following steps; getting the Wave Gun, killing a Hellhound with the Wonder Weapon in No Man’s Land, shooting the Teddy Bears of the Mystery Box, shooting a bone near the Biodome using the Wave Gun, using the Hacker to hack a set of blue and red dog bowls and finally charging up the bowls with souls by killing a dozen zombies near them.
*Origins:
==Call of Duty: Black Ops Cold War==
===Zombies===
====Die Maschine====
*The song Alone can be activated by interacting with three cassette tapes across the map. 
**The tapes can be found in the Living Room, the Medical Bay and the Particle Accelerator. 
*If the player shoots at 3 satellites to point them towards Nacht der Untoten while using a weapon with Dead Wire, they will be rewarded with 1500 Essence and the code "345834825" will be repeated.
*If the player gets a Ray Gun from the Mystery Box, there's a chance of a jumpscare to occur.
*If the player goes into the Dark Aether and shoots five floating Zombies, a free scorestreak will be rewarded.
**If the player happens to go underneath the final Zombie, they will get another jumpscare.
*Once the player builds the Pack-a-Punch Machine, five blue orbs will be spawned in the Particle Accelerator and must be shot in a certain order. Once shot, the player will be teleported to the Dark Aether and will be encountered by four Zombies holding a loot box with disco music. Once the box is opened, it will reward the player with a free Juggernog soda and Salvage.
*If the player reaches Round 45 and enters the Dark Aether, an Orda will be seen walking through the forest. The player must then wait 115 seconds in the Particle Accelerator and will hear stomping. The player must make their way back to the Pond and will be rewarded a free Max Ammo.
====Firebase Z====
*The song Lost, sung by Samantha Maxis, can be activated by collecting three cassette tapes hidden throughout the map.
**The cassettes can be found in the Scientist Quarters, Motor Pool Office and Equipment Storage.
*Once the player has activated the Aether Reactors, a blue bunny stuffed animal named Mister Peeks will spawn in the Atrium. The player must stare at the eyes of Mister Peeks until Peeks flies at the player. This in cause will send the player into the Dark Aether and they must shoot at multiple pink bunnies that are spawned. Once the third one is shot at, a crate will spawn, dropping the player a free Juggernog soda and weapons.
*Once the Aether Reactors are enabled, there will be a glowing button on one of the jump pads. Shooting it will cause it to become a dance pad with five directional prompts appearing on said pad. Once done correctly, it will grant the player a free launch and send them to another pad. If the player does this five more times, the price goes down to 0 for the duration of the match. If they mess up, the player must wait until the next round to continue.
*A zombified head can spawn and is able to be picked up by the player. They can bring the head to the Field Hospital and place it in an empty testing stand. It must then be powered by an Essence Trap by having a zombie trapped within it. The head will then be reanimated and say a code before exploding.
**The player can then use the code within Lev Kravchenko's office safe and interacting with it to be rewarded a Perk-a-Cola and Intel along with a pack of Hellhounds.
*If the player gets 50 kills using a Monkey Bomb in the Data Center, Mission Control or Military Command, the Monkey Bomb will be upgraded to have a new music track, causing zombies to dance and inflict more damage. This upgrade lasts the entire match until the player Exfils.
====Mauer der Toten====
*The song Amoeba from the Adolescents can be activated through three cassette tapes hidden in the map.
**They can be found in the East Berlin Streets by the electronics store, the Blasted Suite on a cabinet and the Garment Factory on a mannequin.
*Throughout the map are six parts of Mister Peeks, collecting a part will light up the Hasenbau building in East Berlin Streets.
**They can be found on a desk in Hotel Room 304, by a tire stack in the Alley, near the Juggernog machine, in the Department Store, by a cardboard box in the Sewer Access and on a shelf in the Grocery Store.
**Once all six parts are collected, the player is sent to a Nightclub where Peeks is a DJ with several zombies dancing next to it. The zombies will then attack in three waves, each wave having a different Special enemy. After the waves are completed, the player can interact with one of the three doors to collect a reward. If the player doesn't kill all the zombies in the time limit, they are sent back to the East Berlin Streets and granted a small reward. 
**The player can return to the Nightclub exactly 15 rounds after doing it the first by shooting at Mister Peeks who is spawned in the Hasenbau building. This can be done a total of two times.
*After turning on power, a file will appear on the Apartment Rooftop when looking over the Königshaus and Korber signs. When the player interacts with said file, multiple moving targets will appear and must be shot within the time limit. 
**They are spawned behind the Königshaus, Korber and Der Dozent signs respectfully, the second floor of the Königshaus building, and the middle three windows of the top floor of Der Dozent.
*The player can acquire a hidden Conversion-Ready Binary Repeater-Standard Wonder Weapon after activating Klaus. The player must acquire a blacklight by commanding Klaus to open a locker in the Switch Control Room. After doing so, three sets of numbers will be spawned in the Garment Factory, Grocery Store and Service Passage in respective order. Once the numbers are found, the player must make their way to Hotel Room 305 and interact with safe inside the room and enter the numbers. If done correctly, the safe will open and the CRBR-S will be able to be used.
==Call of Duty: Vanguard==
===Campaign===
*Numa Numa Trail: Lewis Howard mentions a "brother fighting in Europe" which is in reference to Marcus Howard who was featured in Call of Duty: WWII and is also played by Russell Richardson
===Multiplayer===
*All the maps feature multiple hidden yellow ducks that can be found in pictures, caves and cabinets.
*Castle: On the bridge, a radio can be heard emitting a signal in morse code which translates to "SHG Melbourne", one of Sledgehammer Games offices.
*Demyansk: The Atlas Corporation logo can be seen on multiple stacks of wood in the Lumberyard.
*Paradise: The player can be damaged if in the Contaminated Zone which consists of a green pool in the middle of a wrecked V-2 Rocket.
*Mayhem: The map takes place in a ravaged city in reference to Godzilla. It also has a set of the campaign mission Phoenix and sets of a German flying saucer, volcano and of a traditional Japan.
*USS Texas 1945: The weather is light rain with a high of 58 degrees Fahrenheit and a low of 42F. It is cloudy and the wind is 8 knots and increasing to 12.
*Beheaded: The map takes inspiration from the 2008 movie Cloverfield which sees a giant creature beheaded the Statue of Liberty. Around the map are many posters featuring the Operators from Vanguard.
===Zombies===
====Terra Maledicta====
*At the Outpost Courtyard, behind a Kortifex rune is a secret room. The player can unlock this room by digging with the Shovel at dig sites to get 4 tome pages and then put them in the correct order at the rune. Once opened, the player can be granted a free Deathmachine and a chance of a Ray Gun. 
*If the player digs up an Antenna, they can place it at the comms table in Merchant Road. This causes a horde of Boom Schreier's to spawn. The player can then rotate the antenna at the Bazaar, Debris Field or Market Storage in any order. Once it's rotated three times, a horde of Sturmkrieger's will spawn and once the last is killed, will drop a loot chest.
*After digging at a dig site, there's a chance for a purple orb to spawn and fly into the player's body. This will cause their health to be halved and the player must find rune spots located around the Hub. Once found, the player must bury the Corrupted Heart which would reward the player with a Sacrificial Heart.
====Shi No Numa====
*The player must complete the Story Quest up to filling the Fountain with Zombie Blood. The player must then drink the Zombie blood and locate three parts of Mister Peeks. It will spawn at the corner of the Fishing Hut exterior, beneath the zipline at the Doctor's Quarters and at any Mystery Box location once moved while the Zombie Blood is active. Once all three parts are collected, the player will rewarded with a Fire Sale, 5000 points and either a Self Revive or a triple Pack-a-Punched weapon.
*Like in the Black Ops III version of the map, Shi No Numa has the musical easter egg that can be acquired in the same steps. The player must shoot four pans in the Fishing Hut to get a Samantha Maxis doll to spawn. Once interacted, the player must shoot at the doll that is spawned on the podiums near the Starting Building. Once it is spawned upright at the Hut, it can be interacted with to give a Max Ammo and play Samantha's Lullaby.
====The Archon====
*The player must make their way to the upper floor of the Radio Outpost. Once getting there, the player must interact with the instrument three times to play the Vanishing Shore.
*The player must acquire a shovel and dig at the dig sites like in Terra Maledicta. Three parts of the Mister Peeks bunny can appear at said dig sites and once the player acquires the final piece, is rewarded a Ray Gun and multiple Bonus Points Power Ups.
==Call of Duty: Modern Warfare III==
===Zombies===
====Operation Deadbolt====
==Call of Duty: Black Ops 6==
===Zombies===
====Terminus====
====Liberty Falls====
Category:Gameplay mechanics