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Call of Duty: Black Ops Cold War

How to complete the Firebase Z Easter Egg in Black Ops Cold War Zombies

Here’s how to complete the Easter Egg and unlock the hidden cutscene in Black Ops Cold War Zombies’ Firebase Z.

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bocw zombies Firebase Z gameplay

Like all good Zombies maps, Firebase Z has a lengthy Easter Egg to complete that will unlock a secret cutscene, as well as a calling card to show off. Here’s how to complete it.

The Firebase Z Easter Egg went live on February 5 so everyone could begin on an even playing field. It didn’t take long for the most skilled hunters to solve it, but we’ve broken it down into easy-to-follow steps so you can solve it yourself. Buckle in though, it might take a while.

Before beginning the Easter Egg, you need to turn on the power, unlock the Pack-a-Punch machine, and get the RAI K-84 Wonder Weapon.

You don’t need to get the RAI K-84 before starting the Easter Egg, but it’ll be easier in the early rounds so we recommend getting it early by following our guide.

Here’s how to complete the Black Ops Cold War Firebase Z Easter Egg.

Step 1: Speak to Ravenov and Peck

Once the Pack-a-Punch machine is online, speak to Ravenov who will be marked with a waypoint. After talking to Ravenov, speak to Doctor Peck who’s located in the Mission Control Room where the leftmost Aether Reactor is.

Head back to the village and speak with Ravenov again, and he’ll give you a keycard. After picking it up, you’ll need to head to three lockers around the map.

Step 2: Open the lockers

The first locker can be found directly opposite Ravenov’s office beside the Quick Revive perk. Simply use the interact button to open it with the keycard, and take the Serum from inside.

quick revive bocw zombies firebase z

The second locker is in the Colonel’s Office above the right-most Aether Reactor. Again, open it and take the Serum.

The third locker is found through the gate at the left of the Portal. Go into building directly in front, and you’ll find the locker on the bottom floor.

Step 3: Create Truth Serum

After taking the Serum from the final locker, head to the Field Hospital near the Barracks by the Heli-Pad. There will be a Chemical Mixer on the table. Interact with it to insert the Serums.

The Serums will begin to mix and you’ll need to fight off a hoard of Hellhounds while you wait. Once the dogs have been defeated, you can pick up the Chemical Mixer and take it to Mission Control Room above Peck’s Office.

Rather than going inside, you can find a vent to the right of the door. Interact with the vent and you’ll administer Truth Serum to Peck below.

Head down to his office, and after doing a little dance, Peck will tell you to head to the Data Center.

Step 4: Capture the Mimics

The Data Center is the building below the satellite dish, so head there and make for the Speed Cola Machine on the top level. On the left of the door beside the machine, there will be a computer with radar on the screen.

speed cola bocw zombies firebase z

When you brush up against the computer, Peck will begin talking and you can unlock the machine. From the machine, you’ll be able to pick up four Essence Traps.

You’ll need to use these Essence Traps to capture Mimics.

Unfortunately, it needs to be specific Mimics. To find them, you’ll need to go around the map until you find a location with several Scorestreaks on the floor. One of the items will be a Mimic in disguise, and you won’t be able to interact with the rest.

Once the Mimic pops out, shoot it until it’s almost dead, throw the Essence Trap on the floor. As it walks over it double-tap interact and it’ll capture the Mimic.

Sometimes the Mimic will escape and if it does, you’ll need to get another Essence Trap from the computer and try again with another one.

bocw zombies firebase z

Once the Mimic is captured, take the Trap back to the computer and listen for one of three characters to talk. We recommend turning on subtitles so you can see if it’s either:

  • Sokolov
  • Brahms
  • Zabim

If it’s not one of these characters, you’ve captured the wrong type of Mimic. Start the next round, then look for the items on the floor again and capture the Mimic that spawns there.

Once you’ve done this three times, a Floppy Disk will pop out of the computer that you need to pick up.

Step 5: Get Aetherium Crystals

After getting the Floppy Disk, take it to the Planning Offices which is the room above where we found the third Serum in Step 2. Insert the Floppy Disk and you’ll be asked to head to the OPC. This is the circular building outside Peck’s Office.

Firebase Z in-game

You’ll find the door is now open, and once you’ve looked at the Aetherium Portal, go and talk to Peck. After a lengthy conversation, you’ll be tasked with finding Aetherium Crystals.

Open the locker on the wall opposite Peck’s Office and you’ll be given an Aethermeter. With this, you need to collect three Aetherium Crystals.

You’ll also need the RAI K-84 and a shovel for this next step.

The shovel can be found in the Scorched Defence outside the building with Peck’s Office. Look in the leftmost hut at the top of the hill and it should be easy to find.

Aetherium Crystal 1 location

With the shovel in hand, head to the Jungle Defence area by the Juggernog Machine, at the right-most Aether Reactor. Go down the hill until you’re almost out of bounds and listen for a beeping noise coming from the ground.

bocw zombies firebase z mangler

When you’re in the right spot, you’ll get a prompt to dig and after doing so, a bubble will form around you. You’ll need to survive inside this bubble for quite a while, battling zombies, Manglers, and Hellhounds.

Once the bubble breaks, you can pick up the Aetherium Canister off the floor.

Aetherium Crystal 2 location

To find the second Aetherium Crystal, you’ll need to head back to the Planning Offices from Step 5. Listen for the beeping on the ground outside again, and dig up the canister once you’ve found it.

After digging it up, lots of Aetherium Canisters will pop up and you’ll need to find the one without black smoke. Almost all of the canisters will have black smoke swirling around inside, so you need to pick up the one with the white smoke. If you get it wrong, you’ll need to try again in the next round.

Just pick up the one with the white smoke and you’ll have the canister in your inventory.

Aetherium Crystal 3 location

You will need to have the RAI K-84 equipped to get the final Aetherium Crystal.

Head to the steps up to the Data Center which is right beside where you created the Truth Serum in Step 3.

RAI K-84 bocw zombies firebase z

After digging up the canister, it will teleport around the Barracks area, moving if you get too close. To pick it up, you’ll need to shoot it with the RAI K’s secondary fire mode. The button defaults to ‘Up’ on the D-Pad or ‘B’ on keyboard, so change the fire mode to the grenade and shoot the canister from a distance.

While the grenade you’ve fired is swirling above the canister, you can pick it up.

Step 6: Activate the portal

Well done for getting this far! We’re almost at the end.

You’ll now need to visit all three of the Aeitherium Reactors you turned on at the start of the game. Deposit a crystal in each, and then visit the OPC again and Peck will destroy the portal.

Go back to Peck and he’ll close the blinds to his office. The characters will all have a chat, and decide that the satellite can be used to reopen the portal. Head to the Planning Offices and interact with the computer by the window.

bocw firebase z mimic

This will open up a mini-game where you need to click on the Satellite marked with a question mark. Some will have an American or Russian flag so only select the one with the question mark.

Head back to the OPC and you’ll now be ready to start the boss fight.

Step 7: Defeat Orda

After interacting with the control panel on the right-hand side of the OPC room, you’ll be teleported back to the starting village. Here, you’ll have to fight Orda, an Elder God.

Keep shooting him while being mindful of the zombies on the ground attacking you, and you shouldn’t have too much trouble taking him down.


Once he’s defeated, congratulations! You’ve finished the Black Ops Cold War Firebase Z Easter Egg.

This will show the final cutscene for Firebase Z, and you’ll also unlock a Calling Card to show off.

Image Credit: Activision

Call of Duty: Black Ops Cold War

When does Black Ops Cold War Season 4 begin? Reveal, start date, details, maps, weapons, more

Season 3 of Black Ops Cold War is halfway done, but when can we expect Season 4, and what maps and weapons will it have?

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cod cold war season 4

Despite all the new changes that Season 3 has brought, we are already well on the way to CoD: Cold War Season 4. We’ll look at when it starts and any other relevant details such as new maps, guns, and changes.

Season 3 of Black Ops Cold War has really filled up the game with lots of extra content and made it feel like one of the fullest Call of Duty games to date. Cold War has continued to do what it does best: deliver exciting new maps and pile on more guns, including the PPSH-41, Swiss K31, and AMP63.

Between Outbreak’s new Easter Egg, the new Cold War battle royale mode, and the myriad of other modes available in the game, Season 3 has made Cold War a jam-packed experience. But we still have a few months to go until the presumed release of Call of Duty 2021, so there’s still plenty more to come.

Here’s everything we know about Season 4 of Call of Duty: Black Ops Cold War so far.

Black Ops Cold War Season 4 Reveal

Players will be able to get their first look at what the new season will be bringing to the world of Call of Duty: Black Ops Cold War during the Kickoff Live portion of the Summer Game Fest on June 10 2021.

The official Season 4 gameplay trailer for Black Ops Cold War was released on June 10, 2021, and it featured a variety of exciting glimpses at content players will be able to experience. You can find the full trailer below:

Black Ops Cold War Season 4 start date

cod cold war standoff map

One constant about each new season of Call of Duty: Black Ops Cold War is that as soon as one finishes the next starts soon after.

The current Season 3 Battle Pass is scheduled to end around June 15th or June 16th, and the downtime is usually nothing to worry about.

So we can expect Season 4 to start on June 16th or 17th.

Cold War x Warzone Season 4 teaser

Upon launching Black Ops Cold War or Warzone, the final cutscene for Season 3 plays out. After Adler was rescued from Verdansk, Stitch and his cronies hatch the next stage of their evil plan.

This teaser hints at a new Operator and perhaps a new location for a new multiplayer map. Wraith mentions that their “man in South Africa is standing by.” This could hint that a South African Operator will be coming in Season 4, and there might be a new map set in South Africa along with him.

New Black Ops Cold War Season 4 maps

cod cold war season 4

The new season of content for Call of Duty: Black Ops Cold War will bring some new maps for players to battle against each other, with one of them being a classic fan favorite from the past.

These new maps are Collateral, Amsterdam, and popular Black Ops II map Hijacked and were officially revealed on June 10.

Given that we’re not too far away from details about Season 4 of Cold War becoming official, it’s only natural that rumors and speculation are starting to become rife.

With the midseason Reloaded content drop behind us and John McClane and Rambo now present, we can look ahead and see that Cold War is possibly gearing up for some classic maps to return.

It seems that Hijacked is being prepared for Season 4 as a big inclusion that will see players scrambling to conquer the massive cruise ship. Also, another as yet unnamed surprise remaster could be joining it as well.

Also, rumors are abound that there will be a new “DLC round-based Zombies map coming in Season 4” too. A glimpse of this new Zombies map was possibly shown during the gameplay reveal trailer, which you can find below:

Treyarch went on to post on Twitter on June 11, 2021, a tweet that included an image and a caption stating that the prologue for the next round-based Zombies map starts on June 17, so perhaps it will be released in the Reloaded portion of Season 4 a couple of months from the start of the new season.

Black Ops Cold War Season 4 weapons

cod cold war ppsh smg

Carrying on the usual groove of Season 1 and Season 2, Treyarch’s most recent inventory boost added a few new guns and some extras such as the Baseball Bat and the Ballistic Knife.

At the moment we don’t know too much about what Season 4 is set to include, but it is a curious question given how balanced the meta is right now. Thanks to all the buffs and nerfs delivered by Season 3 Reloaded, you wonder what new weapons will be introduced. We will update this page once we know more.

The Season 4 gameplay trailer released on June 10, 2021, teased the arrival of various weapons for Call of Duty: Black Ops Cold War that includes the G3 Assault Rifle, Nail Gun, and Desert Eagle Pistol.

Also, check out our ranking of every gun in Black Ops Cold War.

Black Ops Cold War Season 4 game modes

cod cold war sticks and stones

If there’s one thing that players cannot complain in Cold War about it’s the smorgasbord of game modes to plow through. As well as new game modes and limited-time-only playlists, existing ones are even being expanded too.

Outbreak players can now fish for instance – a sentence that most gamers would’ve had thought needed to be said. But again, with the recency of the Reloaded update, Treyarch is keeping tight-lipped about any big potential game modes for Season 4 of Cold War.

Once more information starts to filter through we’ll be updating this page to keep you up-to-date about Black Ops Cold War Season 4.

Image Credits: Activision / Treyarch

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Call of Duty: Black Ops Cold War

Black Ops Cold War Season 4 trailer possibly teases new Zombies map

The Black Ops Cold War Season 4 trailer had plenty of exciting footage with one clip possibly giving players the first look at a new Zombies map.

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New Black Ops Cold War Season 4 Zombies Map

Call of Duty: Black Ops Cold War players were treated to some exciting teases in the Season 4 gameplay trailer, with one of them possibly showing the Zombies community the first look at a new map.

Season 3 made some waves in the world of Black Ops Cold War Zombies, with the largest being the introduction of the first main Easter Egg quest for the Outbreak game mode.

This Outbreak Easter Egg quest continued the main story of Black Ops Cold War zombies, which Treyarch has said will ultimately be tied to the next round-based Zombies map for the first-person shooter.

Not much information has been provided for this new Zombies map, with leaks suggesting it could be based in Berlin and that it will be arriving in Season 4.

New Black Ops Cold War Season 4 Zombies Map

While Treyarch has not yet officially announced a Berlin map or that it will be coming in Season 4, the recently released Season 4 gameplay trailer for Cold War possibly gave the Zombies community a first glimpse of a new map.

The part of the Season 4 gameplay trailer in question occurs at the very end of the video. First, a few seconds are shown of Zombies walking down a subway tunnel with then what appears to be a subway on fire making its way towards running all of the Zombies over.

Players will have to wait until June 14 for Activision and Treyarch to officially reveal the content roadmap for Black Ops Cold War Season 4 and if a new Zombies map is included on this plan for the new period of content.

However, this clip from the gameplay trailer does give hope to players that they will be hearing of a brand new Zombies map they will be able to experience at some point in Season 4, even if it might come in the Reloaded portion of the season in a couple of months.

Treyarch went on to post an image on Twitter stating that the “prologue to our next round-based Zombies map begins on June 17.” This looks to confirm that the new map may not arrive at the start of Season 4 but will be coming later on in the season or Season 5.

For more Call of Duty: Black Ops Cold War, check out when the next double XP event is happening for the game or what new weapons players can expect to see in Season 4 and stay tuned for future news and guides.

Image Credits: Activision/Treyarch

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Call of Duty: Black Ops Cold War

When is the next Cold War & Warzone Double XP event?

We have the dates and times CoD: Cold War and Warzone Season 3’s Double XP event to help rank, weapon, and Battle Pass progression.

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cod bocw warzone double xp

With so many Prestige levels, different weapon levels, and Battle Pass levels in Cold War and Warzone in Season 3, it’s only natural to want more XP. Here’s when the next CoD Double XP event is going to be.

XP has been a vital component of Call of Duty’s multiplayer for many years. It’s the quintessential upgrade mechanic that allows you to increase your in-game level and provide you access to better gear and attachments.

Cold War and Warzone Season 3 has offered multiple Double XP events throughout its duration, allowing players to level up the various aspects of the game faster. It’s nearly time for Season 4 of Call of Duty, and we have new weapons and vehicles to look forward to.

Also, use our guide on the fastest way to level up Black Ops Cold War & Warzone Season 3 Battle Pass.

How to get Double XP in CoD: Cold War & Warzone Season 3

cod black ops cold war warzone

It’s been announced that Call of Duty’s next Double XP and Double Battle Pass XP promotional event will be for Black Ops Cold War and Warzone and will officially start on June 11 and conclude on June 14.

This event will help players earn plenty of extra XP to level up their account and Season 3 Battle Pass before the arrival of Season 4 of Black Ops Cold War and Warzone.

What time does CoD: Cold War & Warzone Double XP start?

Here’s a full list of the Double Weapon XP event’s start time & dates in some of the key timezones:

  • EST – 1 PM
  • CST – 12 PM
  • PST – 10 AM
  • GMT – 5 PM

Double XP will be available on Black Ops Cold War and Warzone playlists.

These special Double XP Events usually occur during a weekend, and this one is no different. It naturally gives players the most free time as it’s away from school hours and generally when people are off work.

Don’t forget that you can still unlock Season 2’s new weapons, the FARA 83 and LC10, and them to your collection to use in Cold War and Warzone Season 3.

Also, check out all the details on Call of Duty: Vanguard including its release date, gameplay, and more.

Image Credit: Activision / Treyarch / Raven Software

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