~/hub / custom-maps

Official key art of the Workshop page: the four Ultimis heroes in silhouette before the dome of the underwater base, under the LEVIATHAN logo, Leviathan, Call of Duty Black Ops III Zombies

Leviathan

Leviathan, the Black Ops III custom map by JBird632, HexZombies and Awesome Pieman: the Reception First Room and its two 750 doors, the ZFRR rules, the perks, the Pack-a-Punch submarine, the excavators, the main quest and the World at War version.

  • 9 min read
  • 12 chapters
  • updated

The First Room

The Reception at the start of a game, with 500 points and the M1911: the raised desk and its stairs at the back, blue benches on both sides and the first zombie of round 1, Leviathan, Call of Duty Black Ops III Zombies

On ZFRR, the First Room of Leviathan is the Reception of the Leviathan Underwater Research Facility, with the stretch of seabed outside it. Every game begins one step earlier, inside the Submarine: a small cabin where the players appear with an M1911, next to the Pack-a-Punch Machine, and leave through one of the ejection tubes in its corners. The tubes drop them on the seabed in front of the Reception, and from there the base is closed by doors.

The Reception is a large hall under a glass roof, with a raised desk in its middle. Two doors lead out of it, one on each side, and both cost 750 points: to the right the Locker Room and the Boiler, to the left the room with the crafting table and the MPL. Neither is bought in a First Room game. The record footage of the leaderboard shows the whole game played in this hall, trains run around the desk and the stairs with an M14 from the wall.

An excavator panel with its red button behind the desk of the Reception, looking down the hall, Leviathan, Call of Duty Black Ops III Zombies

The Reception

The hall itself, where a Mystery Box spot stands in the middle. Behind the desk, the three panels that stop the excavators of Tunnel 11, the Biodome and the Submarine Launch Facility.

The Submarine

The cabin where the game starts. The Pack-a-Punch Machine stands inside, with a keypad, but it needs the power. Later in the game, the same submarine roams around the base, and the players jump into it from high outdoor spots to reach the Pack-a-Punch.

The seabed in front of the Reception

Where the ejection tubes land. Each player has a screen there with three personal challenges. A shark swims above it, and one of the three teddy bears of the song sits above the door.

The airlock and the ABA

Between the seabed and the hall, a rack of ABA suits, “Press to use ABA”. As on Moon, the suit lets the player breathe in the flooded and underwater parts of the base.

M14

On a wall of the Reception, on the side of the Tunnel 11 panel. It is the weapon of the round 64 world record.

Olympia

On the opposite wall, on the side of the Submarine Launch Facility panel.

The Quick Revive machine in the dim corner behind the desk of the Reception, Leviathan, Call of Duty Black Ops III Zombies

Quick Revive

Behind the desk of the Reception, the only perk machine of the First Room.

Mystery Box

One of its spots is in the middle of the Reception. The Box can leave it, like on any map.

Free perks

The Leapers drop a free perk at the end of their round when none of the players missed a shot, and the third personal challenge also gives one. The round 60 footage of the world record shows the player with the ten perks of the map, the perk limit being 10.

Enemies

Zombies, and every few rounds a round of Leapers, fast creatures in the manner of the Nova crawlers. The sharks that swim above the seabed drop a random power-up when they are shot.

The Leviathan leaderboard keeps a single category, with a board for solo and one for co-op. Leviathan is a custom map: it is listed with the Black Ops III custom maps and does not count in the ZFRR rating. The rules of the board:

Doors closed

“Reach the highest round you can without opening any doors or barriers.”

Full rounds

“Every round must be played in full.”

No glitch

“Glitches or Exploits are NOT ALLOWED.”

Video

“Full gameplay is required.”

Where to post it

“Twitch: Make sure your footage is highlighted as past broadcasts will not be accepted.” “YouTube: Make sure your video is public or unlisted.”

Overview

Leviathan is a custom Zombies map for Call of Duty: Black Ops III on PC, made by JBird632, HexZombies and Awesome Pieman and posted on the Steam Workshop on May 29, 2020. It is the Black Ops III version of their World at War map of the same name. The Workshop description sets the scene: “A mysterious voice from Richtofen’s past calls out for help, our heroes dive deep into the abyss.” At the bottom they find the Leviathan Underwater Research Facility and its secrets.

GameBlack Ops III (PC, Steam Workshop)
CreatorsJBird632 (mapper, scripter), HexZombies (mapper), Awesome Pieman (scripter)
Workshop releaseMay 29, 2020Last update on July 11, 2020
Steam WorkshopLEVIATHAN
Subscribers618,579 current, 1,135,839 in all (November 11, 2026)
Based onLeviathan, the World at War custom map (2015), original mapping by RadiMax
LocationThe Leviathan Underwater Research Facility, on the sea floor
CharactersUltimis
Perks10, with the custom Vigor Rush and Reserve Soda
Pack-a-PunchInside a roaming submarine, once the power is on
Wonder weaponsHarpoon Gun, Wave Gun, Poseidon’s Wrath (specialist)
Players1 to 4
On the siteCustom maps

The map plays a lot like Moon: most of the base lies under water and needs the ABA suit, Hackers open new options, and excavators threaten to breach whole areas. Glass broken by explosives floods a room, and a flooded room cannot be dried. The Workshop page lists its features: custom perks, a fan trap and a steam trap, the Leaper zombies, buildables, boss fights and an Easter egg that can be finished solo.

Official key art of the Workshop page: the four Ultimis heroes in silhouette before the dome of the underwater base, under the LEVIATHAN logo, Leviathan, Call of Duty Black Ops III Zombies

The Leviathan

The official key art of the Workshop page: the four Ultimis heroes in silhouette in front of the dome of the base.

Credits

The Workshop page credits the team and the voice cast. The PA Announcer is voiced by Glitching Queen, Dr. Wells by Christopherem, Dr. Zav by Jake Adams, the Ultimis crew by Keagan Kelsey and the Uber Diver by Awesome Pieman. RadiMax is credited for the original Leviathan mapping, Chromastone10 for the trailers and testing, and Mirai Dematro for the Vigor Rush jingle.

Characters

U

Ultimis

The playable crew, the four heroes of the Black Ops III story, answering a call from Richtofen’s past.

D

Dr. Zav

A scientist locked behind a dented metal door in the Laboratory. Freed during the main quest, he must be escorted to the room of PhD Flopper, where he opens the door to Poseidon’s Eye.

The man held in the cryo tube, in a cloud of cold vapour, Leviathan, Call of Duty Black Ops III Zombies

The man in the cryo tube

Held in a tube in the room of Double Tap, he guides the second half of the main quest. Guides call him “the guy”; the Steam guide calls him Malkovich.

D

Dr. Wells and the PA Announcer

The two other voices of the base, credited on the Workshop page.

Enemies

The key and a Max Ammo dropped by the last Leaper of the first Leaper round, glowing green on the seabed, Leviathan, Call of Duty Black Ops III Zombies

Leapers

The “Jumping Jacks”, back from the World at War version. A Leaper round comes every five to seven rounds. The last one of the first round drops a key, used in the main quest, and the round gives a free perk if no shot was missed.

The Diver in his red suit and brass helmet, seated on his throne in the Elysium Arena, Leviathan, Call of Duty Black Ops III Zombies

The Divers

Deep sea divers armed with a harpoon launcher. One is the first boss of the main quest, in the Elysium Arena; the update of July 11, 2020 made the divers of the map weaker and made them drop random power-ups.

The Leviathan, a giant glowing sea creature, rising beside the deck of the boat in the final fight, Leviathan, Call of Duty Black Ops III Zombies

The Leviathan

The giant sea creature fought from the deck of a boat at the end of the main quest, in three phases, the second one against a Diver.

The sharks around the base are not enemies: six of them are needed for the Shark mask, and any shark shot down drops a random power-up.

Perks

Ten perks are on the map, and the perk limit is set to 10 at the start of a game. Two are new, made for Leviathan: Vigor Rush, which makes bullet weapons fire explosive rounds, and Reserve Soda, which raises the magazine and reserve ammo of every weapon. PhD Flopper, Deadshot Daiquiri, Double Tap and Mule Kick come back from the older games.

The Juggernog machine against a wall of the Cafeteria, beside the bar stools, Leviathan, Call of Duty Black Ops III Zombies

Juggernog

In the Cafeteria.

Quick Revive

Behind the desk of the Reception.

Vigor Rush

In the Pantheon, under the Biodome.

Reserve Soda

At the end of the Greenhouse.

Every perk, the power and the Pack-a-Punch submarine

Weapons

The walls of the base sell classic weapons, the M14 and the Olympia of the Reception among them, and the Mystery Box holds the Wave Gun, the Harpoon Gun, the Gersh Device and the QED. Two buildables add the Submersible Armament shield and Poseidon’s Wrath, a specialist weapon in the manner of the water staff.

The crystal harpoon in the Elysium Arena, named Crystalized L2 Pressurized Harpoon in the HUD, Leviathan, Call of Duty Black Ops III Zombies

Harpoon Gun

From the Mystery Box. With Poseidon’s Eye, the crystal of the main quest, it is upgraded at the crafting table of the Laboratory.

Poseidon's Wrath held in one hand, unleashing a wave of water on the seabed, Leviathan, Call of Duty Black Ops III Zombies

Poseidon’s Wrath

A trident built from three parts. Pulling both triggers fires waves of water that wipe out hordes, and its melee kills in one hit late into the game.

The wall weapons, the Box and the wonder weapons

The shield, Poseidon’s Wrath and the Hacker

Excavators and flooding

Three excavators, as on Moon, dig into the base: Tunnel 11, the Biodome and the Submarine Launch Facility. A voice warns that an area is about to be breached; the three panels of the Reception stop them, but only with a Hacker in hand. A breached or flooded area fills with water and stays that way. A keypad in the Pack-a-Punch submarine can also start each excavator with a code.

The Hacker lying on a desk of the Laboratory, Hold for Hacker, Leviathan, Call of Duty Black Ops III Zombies

Hacker

Found in one of seven spots of the Laboratory. It hacks the excavator panels, the challenges, the power-ups, the doors and the Mystery Box.

Easter egg

The main quest frees the man in the cryo tube and ends in a fight against the Leviathan itself. It can be played solo. Its reward: every perk, through the perma perk given to each player.

  1. Turn on the power and earn the One Inch Punch by beating the Diver in the Elysium Arena.
  2. Punch the painting of the Laboratory office to find the Vrill Device.
  3. Solve the computers of the Submarine Launch Facility, take the valve from the submarine and free Dr. Zav for Poseidon’s Eye.
  4. Hack the four panels around the cryo tube, sink the second submarine with a mine and bring its uranium to the tube.
  5. Charge the uranium at the soul generator, survive the lockdowns and turn on the backup power.
  6. Throw QEDs at three sheds outside the base, then a Gersh Device into the cryo tube, and take the submarine to the final fight.

The main quest, step by step

Secrets

Five masks

The Shark, Golden ABA, Leaper, Diver and God masks, each won by a task and picked up in the mask room. They let the player breathe without the ABA.

The keypad codes

Codes typed on the keypad of the submarine give points, power-ups, a teleport, QEDs or start the excavators.

Lost It All

Three teddy bears play the song of the map, Lost It All by Avenged Sevenfold.

Free Gersh Devices

A wall of screens, hacked and filled with souls, gives a code for free Gersh Devices.

The masks, the codes, the song and the other secrets

The World at War map

Leviathan was first a custom map for World at War, by AwesomePieMan, JBird632, RadimaX and HexZombies, whose trailer came out in February 2015. The site keeps a separate leaderboard for the World at War version, where the map must be played on its last patch, version 1.2. The Black Ops III map, presented by its team as Leviathan Remastered, is credited on the Workshop with RadiMax for the original mapping. Its Leaper rounds come back from the World at War map.

Trivia

  • The keypad codes spell words on a phone keypad: 2265 is BANK, 3855 is FULL, and the three excavator codes are BIRD, 0HEX and 0PIE.
  • The update of July 11, 2020 made every door 250 points cheaper, which is why guides from May and June 2020 give higher prices.
  • The same patch removed the TIME code from the keypad, which crashed the game of some players.
  • Double Pack-a-Punch is disabled on the map, according to the Scorpiolo guide, made on the release day of the map.
  • The last chapter of the MZC guide of 2026 is called “Jason Blundell Jumpscare”.