Cut Content (Below Zero)

This page serves to chronicle any significant content that was cut from the final version of Subnautica: Below Zero.

Deep Arctic
The Deep Arctic was the entrance to the Methane Ice Caves Biome, and was surrounded entirely by the Arctic biome. It was going to be the original home for the cut Ice Dragon Leviathan. Not much was known about the biome before it was cut. The Deep Arctic was removed in build 15728 after the 2019 summer developer retreat, and everything below 500 meters in the biome (including the Methane Ice Caves) was completely filled in with terrain.

Deep Arctic Resources= Deep Arctic Fauna=
 * Deep Arctic Resource
 * Nickel Ore
 * Ruby
 * Glow Whale
 * Rock Puncher

Fissure
The Fissure was a small unfinished transitional biome that connected the Purple Vents with the old Crystal Caves. Not much was known about the biome before it was removed. The Biome and the original Crystal Caves were removed in build 15728 after the 2019 summer developer retreat. This biome's purpose was later filled in by the Deep Purple Vents.

Fissure Resources= Fissure Fauna=
 * Lithium
 * Quartz
 * Blighter

Frozen River
The Frozen River, as the name suggests, was a narrow chasm which a frozen river ran through. Prior to the Frostbite update, the river was a part of the original story's intro, where Robin Goodall would cross through the biome as meteors rained from above. The biome is still in the game, but can only be accessed by using the jump boost of a prawn suit or by building your way up to it.

Frozen River Flora=
 * Blue Scrub Bush
 * Frost Vase Plant
 * Frozen River Plant 01

In-Game=

Hoverzone 3
Hoverzone 3 was an unfinished surface biome that served as the way back to the Architect Gate Base (which at the time was known as the Architect Shield Base) during the game's final act. It had no fauna and was connected to the Fabricator Caverns via a big deep hole. The biome was one of the three original "Hover" biomes, the other two being the Glacial Basin (hoverarea) and the Arctic Spires (hoverzone2). In early access version 8 and 8.1 the entrance to the area was blocked off by a wall of crystals to stop the player from progressing further than the developers intended. It was then cut as the story no longer required that the player be kept from accessing the Architect Gate Base (formally known as the Architect Shield Base). The area was removed from the world as of build 32522 and the crystal wall has been replaced by a short tunnel leading to a dead end. Before the area was removed a Shadow Leviathan and a few crystals could be found at the entrance to the area.

Ice Sheet
The Ice Sheet was an unfinished surface biome that used to be a one-way route leading to the Arctic Kelp Forest from the Arctic Spires. The area where the biome used to reside has been filled with terrain, however, the biome ID is still in the game.

Leviathan Trench
The Leviathan Trench was a biome listed on the developer Favro during early development. It was eventually cut for unknown reasons.

Methane Ice Caves
The Methane Ice Caves would have been the deepest biome in the game at 883m deep. Before it was cut, it contained the earliest iteration of Marguerit Maida's Base (Coordinates: 1064 -595 -657), at the time a placeholder copy of Research Base Cappa, at a depth of 590m. The player meets Marguerit for the second time there. Though the biome ID is still in the game, the area was cut for unknown reasons. The Methane Ice Caves was one of the first biomes teased with concept art. The Biome was removed in build 15728 after the 2019 summer developer retreat.

Methane Ice Caves Fauna =
 * Spinefish

Rocket Area Shelf
The Rocket Area Shelf was the pre-release location of the Exchanger Rocket. As evidenced by the leftover biome ID, it was located near a cave in the Ice Sheet called the Rocket Cave. For progression reasons, the area was cut a month before release and replaced with Delta Island.

kn1ghTski65
kn1ghTski65 was a character that sold a passenger shuttle to Robin. He only appeared in the Frostbite update.

Maxim Plenty
Maxim Plenty was a character serving as the Director of the 4546B Vesper Mission. In the story prior to the Frostbite update, he briefly interrogates Robin Goodall on the unusual biometrics recorded from her biosample that she sent up in the Exchanger Rocket. In the Deep Dive iteration of the story, Maxim interrogates Jevov, ordering him to deactivate the planetary shield, and proceeds to put Sam under arrest.

Serik Jevov
Serik "Jeff" Jevov was the main antagonist of the story prior to the Frostbite update, Jevov served as a contractor working for Alterra, alongside Robin Goodall. During the game’s old introduction, he awakens Al-An and escapes into an Alterra Shuttle only to survive crash-landing in the Glacial Basin. At some point in the story, Jevov would contact Robin on an unmonitored channel informing that he could provide her information regarding her conflict with Al-An residing in her head shortly before cutting off. Sometime after acquiring Jevov’s PDA, the Vesper finds him in the next sector, and alongside Robin is ordered to return to the Vesper as soon as a ship was made available. Shortly after Robin sends the Enzyme 42 sample in the Exchanger Rocket up to the Vesper Station, Jevov activates the planetary shield, intentionally destroying the rocket in the process. It is then revealed that he had released Khaara onto the station and threatened its members on board to relocate the Vesper to the nearest star system to receive a cure from his colleagues, in order to capture Al-An for himself.

The voice actor for Serik Jevov was Alexander Mercury.

Prior to the Deep Dive update, he was originally named Jo Jeffreys.

Tree Spires Coral
The Tree Spires Coral was a coral species that was never implemented into Subnautica: Below Zero. Its name would suggest that it was meant to appear in the Tree Spires, but the Tree Spires Coral was never added there.

The reason this coral species was cut is unknown.

Dragonfly
The Dragonfly was a flight-capable species of Fauna that was originally intended to appear alongside the Skyray in Subnautica.

Concept Art=

Hover Lizard
The Hover Lizard was a small land creature that was planned to appear in the Glacial Basin. It was created by a member of Fox3D Entertainment as a side project, without prior discussion with the developers. Before ever actually appearing in the game, it was added to the developers' Favro as a cut candidate, and it ultimately went unused. Its model was once viewable on Sketchfab, but it has since been disabled.

Ice Dragon
The Ice Dragon was a leviathan class predator designed by Alex Ries.

It remained as a cut candidate for some time on the Favro, before being cut soon after the summer 2019 developer retreat due to its home biome also being cut.

Concept Art=

Kitewing Skyray
The Kitewing Skyray was an aerial predator species designed by Alex Ries. No 3D models were ever developed.

Concept Art=

Sea Emperor Leviathan
The Sea Emperor Leviathan was a leviathan class fauna from the original Subnautica. It was intended to serve an important role in the story in Below Zero, being the source of Concentrated Enzyme 42 that Robin would send to the Vesper Station via the Exchanger Rocket. In early development, they were originally found in the Lilypad Islands, but at a later point were moved to the Arctic. They were cut with the introduction of the new story in the Frostbite update.

Frosted Leaves Plant
The Frosted Leaves Plant was a flora species that resembled some palm trees. A databank entry for it was obtainable at some point in Below Zero's development, but the plant itself was never able to be spawned in through console commands. It is currently unknown where the Frosted Leaves Plant was intended to be used.

Reaper's Wineglass (Curved)
These variants of the Reaper's Wineglass was curved and would have likely been found attached to wall. All Reaper's Wineglass have "lillipads" in their name suggesting these and other variants may have orignally been found in the Lilypad Islands biome.

Snake Plant
The Snake Plant  was a Flora species that was never added to Below Zero. It is currently unknown where the Snake Plant was intended to be used.

Spine Plant
The Spine Plant was a flora species that could be spawned in through console commands during Below Zero's development. It is possible that the Spine Plant was meant to be aquatic, as it appears alongside other aquatic flora in its concept art. The Spine Plant can still be spawned in using the command.

Databank Entry
Screenshots=

Weird Plant
The Weird Plant was a species of Flora most likely intended to be found on land-based biomes. Based on Concept Art, the Weird Plant could have been meant to function similarly to the Fevered Pepper Tree in that it would produce fruits that the Player could consume to increase their Temperature. While initially having a similar function to the Fevered Pepper Tree, the Weird Plant's model was implemented much later, and may have later been intended to have a different function at that point. Concept Art=

Deep Arctic Resource
The Deep Arctic Resource was used as a placeholder for potential resources in the Deep Arctic Biome. Because the Deep Arctic was scrapped, the Deep Arctic Resource was also cut.

Heating Gel
Heating Gel was an item that the player could use to increase their temperature. It was crafted with Lantern Fruit, though this may have been placeholder for the Fevered Pepper. The item was present in Supply Drops in very early versions of the game, but had no effect due to the temperature system not being implemented yet. It was removed and listed as a cut candidate, and never made it to the final release of the game.

It may be possible its role was replaced by the addition of the Cold Suit, Thermos, or even the Spicy Fruit Salad.

Hover Zone Resource 1
The Hoverzone Resource 1 was a placeholder resource likely meant to be used in one of the three "Hover" biomes: the Glacial Basin, the Arctic Spires, or Hoverzone 3. It shared its item icon and in-game name with the Hoverzone Resource 2. Because Hoverzone 3 was scrapped and the other two "Hover" biomes never used the Hoverzone Resource 1, it was never implemented.

Hover Zone Resource 2
The Hoverzone Resource 2 was a placeholder resource likely meant to be used in one of the three "Hover" biomes: the Glacial Basin, the Arctic Spires, or Hoverzone 3. It shared its item icon and in-game name with the Hoverzone Resource 1. Because Hoverzone 3 was scrapped and the other two "Hover" biomes never used the Hoverzone Resource 2, it was never implemented.

Ice Berg Resource
The Ice Berg Resource was used as a placeholder for potential resources located on Icebergs in the East Arctic Biome. Because these Icebergs never received any unique resources, the Ice Berg Resource was cut.

Lab Equipment
 Microscope=

Fluid Analyzer=

Sample Analyzer=

Lab Equipment items were placeable items that were used purely for decoration. Their models can still be found in-game at Outpost Zero and Omega Lab, but they cannot be interacted with.

Reinforced Glass
Reinforced Glass was a material that was only used to fabricate the Prawn Suit. It was likely removed due to its limited use.

Twisty Bridge Resource
The Twisty Bridge Resource was used as a placeholder for potential resources located in the Twisty Bridges Biome. Because the Twisty Bridges never received any unique resources, the Twisty Bridge Resource was cut.

Exchanger Rocket
The Exchanger Rocket was a structure located at the top of Rocket Island. It was a large platform hosting a rocket that was used to send items up to Vesper Station. The rocket originally had to be repaired with a Repair Tool before it could be launched, and required two Titanium to create another rocket after being launched.

The Exchanger Rocket and all of the mission items that would have been placed in it were cut due to a story change and replaced with the Communications Tower.

In-Game=

Methane Ice Caves Cache
The Methane Ice Caves Cache was an Architect cache located in the Methane Ice Caves. It originally contained the arm fragment of Al-An's Vessel. This cache was the deepest Architect structure in the game at a depth of roughly 880 meters.

When the Methane Ice Caves were cut, the Arms component was moved to the Deep Lilypads Cave Cache.

Research Base Cappa
Research Base Cappa was an Alterra Corporation research base located in the Lilypad Islands at a depth of 135m. The Colleague PDA could be found on a desk near a base hatch. The base was originally implemented on top of the big rock in the center of the Lilypad Islands, but was later moved to be within the rock before being renamed (see below).

Old Research Base Omega
Research Base Omega was an Alterra Corporation research base located in the Thermal Spires at a depth of 60m. It was cut period to EA3. The Outpost Omega Research Notes was originally found stuck under a desk in this location. This particular base was never added back, but Research Base Cappa was renamed to Research Base Omega, then to Outpost Omega, and then to Omega Lab.

Medical Kit Fabricator
The Medical Kit Fabricator was an Interior Module that could create First Aid Kits. It would produce one First Aid Kit every thirty minutes and would repeat the process once the player collects a finished kit. Though the blueprint is not obtainable through normal gameplay, it can be unlocked via the command. Medical Kit Fabricators can be found in Omega Lab and Marguerit Maida's Base, however, they are unscannable.

Mini Moonpool
The Mini Moonpool was a planned seabase module. Other than being a smaller-sized Moonpool, nothing is known about it, and it was cut before being implemented into the game in any way.

Phasegate
The Phasegate was a buildable Interior Module that allowed the player to teleport between two built Phasegates. It used a model from Natural Selection 2, another game developed by Unknown Worlds. It was located on the developer favro as a cut candidate before being eventually removed from the game for unknown reasons. Suprisingly, it is still spawnable to this day using the spawn ID phasegate, though it will not work, unless it is built using the builder tool, which is currently impossible.

Radio
The Radio was an interior seabase module from Subnautica that would have been used to recieve and play back messages. The Radio was planned to possibly be reused for Subnautica: Below Zero for completely optional story content or exploration purposes. It would've lead to certain points of interests, such as tech sites. It can be unlocked via the command but it serves no purpose.

The reason the Radio was cut is currently unknown.

Recharge Platform
The Recharge Platform was an external Base Piece that shared the Foundation model and appeared to recharge vehicles. It was scrapped early in development for unknown reasons, but was possibly cut due to being redundant with the Moonpool and the Snowfox Hoverpad.

Recipe
In-Game=

Staircases & Walkways
At some point in development, Staircases and Walkways like the ones seen at Outpost Zero were planned to be added to the Habitat Builder. For unknown reasons, most likely due to their complexity and limited utility, both base parts were cut, and are now only found in-game as part of pre-built bases. As of Stranger Pings, wall-mounted Hatches built on bases above water will automatically form stairs to the ground.

Spotlight
The Spotlight was a light-emitting Exterior Module that was used in the original Subnautica. When built on a seabase or foundation, the Spotlight would turn around and stop at about a 180 degree angle, then turn the other way. The spotlight would also automatically follow any fauna nearby, including the player.

The Spotlight required Energy to function and each one placed would consume three energy every three seconds, or 60 power per minute.

Originally, the blueprint for the Spotlight could be obtained by scanning a pre-built one at the entrance of Snowfox Base during the development of The Snowfox Update.

The reason for it being cut is unknown.

Wall-Mounted Foundation
The Wall-Mounted Foundation was a buildable Seabase component and variant of the Foundation that was never introduced in the game but could have been built off the sides of natural walls either under or above water. It was never introduced into the game and was left as a cut candidate, and was never added before the official release of the game, however recently they were temporarily readded into the experimental version of the game, and currently it is known that they were in Experimental Version 48597, as seen in a video by a youtuber named Aci, however they were removed for unknown reasons. Its likely that they were re-added in by mistake, however they could be trying to re-add this cut buildable.

Weather Station
The Weather Station was a buildable room that would likely have allowed the player to predict incoming weather events, such as snow or rain. The Weather Station came equipped with a Weather Balloon, which the player may have used as a primary function of the room. Ultimately, the station was scrapped. Three components of the Weather Station are spawnable using in game commands: the Weather Station, Weather Panel , and Weather Balloon.

Al-An's perception
When the player was approaching Architect Artifacts and Architect Bases, light waves will appear on the screen that is Al-An sensed them.

Al-An's Vessel (Old)
In earlier versions of the story, Al-An's Vessel was originally composed of four different components: the Head, the Arms, the Legs, and the Power Source. None of these parts received final models and instead used Alien Relics from the original Subnautica as placeholders.

Arms
The Arm component was originally found in the Methane Ice Caves Cache, and was moved to the Deep Lilypads Cave Cache after the methane ice caves were cut. It used the model of the Alien Rifle as its placeholder.

This component eventually got replaced by the Skeleton component in the final version of the story.

Head
The Head component was originally found in the Arctic Spires Cache. It used the model of the Doomsday Device as its placeholder.

This component eventually got replaced by the Tissue component in the final version of the story.

Legs
The Leg component was originally found at a small outpost in the Tree Spires made by Marguerit Maida. It was likely that the legs were stolen from the Fabricator Base in the old story. It used the model of the Alien Building Block as its placeholder.

Unlike the other three components, this component never received a counterpart in the final version of the story.

Power Source
The Power Source component was originally found in the Crystal Caves Cache. It used the model of the Tracking Implant as its placeholder.

This component was eventually replaced by the Organs in the final version of the story.

Alterra All-Environment Protection Suit
The Alterra All-Environment Protection Suit was originally the suit that Robin Ayou wore before her role was changed from an Alterra Contractor to a Xenoworker in the new story.

Alterra Shuttle
The Alterra Shuttle was a vehicle found on a platform near Outpost Zero. While Robin made her way back to Research Base Zero, the shuttle could be seen taking off. Robin would later find out that Serik Jevov piloted the shuttle and crash-landed in the Glacial Basin. The player could find the crashed Alterra Shuttle on a platform near the Snowfox Base.

Prior to the Deep Dive Update, a Neptune Escape Rocket model was used as a placeholder for the shuttle. The shuttle did not take off at this point in development, and was simply buried along with the rest of the base.

Architect Tablet Terminal
Architect Tablet Terminal were terminals that served as locks for the many forcefield gates that were once prevalent throughout Architect Bases. They would not open unless the player had the correct Alien Tablet, blocking player progression. These terminals were made obsolete with the major story rewrite, as Al-An could now simply deactivate these forcefields for the player.

Concept Art=

Codes
Codes were four-digit number sequences required to gain entry to some mandatory and optional story-related locations. Below are all codes that have been used at various points throughout Below Zero's development.

4242 (Alien Research Site Zero)

6295 (Engine room admin office in the Crashed Ship)

2247 (Marguerit Maida's Base)

1679 (Research Base Omega)

Colleague PDA
The Colleague PDA in Serik's Bunker was originally an item that Robin would pick up and send to the Vesper via the Exchanger Rocket. It was later changed to an interactive object that would be transmitted directly to the Vesper upon pickup. The item can still be spawned using the command.

Concentrated Enzyme 42
Concentrated Enzyme 42 was originally a story item acquired from the Sea Emperor Leviathan. Later in the story, Sam would request Robin to send up a sample of Enzyme 42 because their supplies deteriorated overnight. Shortly after Robin sent up the enzyme in the Exchanger Rocket, it would collide with the planetary shield activated by Serik Jevov, destroying the enzyme during the process.

Data Chips
Data Chips were portable versions of the chips found inside Data Boxes. Unlike Data Boxes, once obtained, they could give both blueprints and databank entries. During the old story, one Data Chip could be obtained by a Supply Drop. Another could be found outside Marguerit Maida's Base in the new story.

Known Data Chip contents:
 * Seatruck Depth Upgrade MK2 Blueprint
 * Seatruck Depth Upgrade MK3 Blueprint
 * Early photo entries of Marguerit Maida

Their reason for getting cut is unknown.

Kharaa Sample
The Kharaa Sample was originally a story item that Robin would send up to the Vesper via the Exchanger Rocket. Initially, Robin could acquire the item by knifing a placeholder model of the Frozen Leviathan. Following the Ice Worm update, Robin would extract a Khaara Sample by using a machine to extract from a Kharaa Pustle on the Frozen Leviathan. The item can still be spawned using the command. It was cut because of the new story.

Old Alterra Communications Tower
The Old Alterra Communications Tower was originally an Alterra structure atop the Rocket Island. Robin needed to fix the tower to reestablish contact with the Vesper. Initially, it requested Purple Vent Salvage and Ship Wreck Salvage. After the release of the Deep Dive update, it requested an Advanced Wiring Kit and Ship Wreck Salvage. It was replaced by the Communications Tower between the Frostbite update and Salad Days update.

Outpost Omega Research Notes
The Outpost Omega Research Notes in Research Base Omega were originally an item that Robin would pick up and send to the Vesper via the Exchanger Rocket. They was later changed to an interactive object that would be transmitted directly to the Vesper upon pickup, before being removed entirely during the story update. The item can still be spawned using the command.

Precursor Fish Skeleton
The Precursor Fish Skeleton was a cut skeleton. The item could be spawned using the command. But the item can not be spawned by using the command "spawn".

Precursor Lab Cache Container 1
The Precursor Lab Cache Container 1 was a cut lab equipment in a Precursor Base. The item could be spawned using the command. But the item can not be spawned by using the command "spawn".

Precursor Lab Cache Container 2
The Precursor Lab Cache Container 2 was a cut lab equipment in a Precursor Base. The item could be spawned using the command. But the item can not be spawned by using the command "spawn".

Precursor Lab Table
The Precursor Lab Table was a cut lab equipment in a Precursor Base. The item could be spawned using the command. But the item can not be spawned by using the command "spawn".

Precursor Scanner
The Precursor Scanner was a cut tool of Precursor. The item could be spawned using the command. But the item can not be spawned by using the command "spawn".

Precursor Sensor
The Precursor Sensor was a cut tool of Precursor. The item could be spawned using the command. But the item can not be spawned by using the command "spawn".

Precursor Sea Dragon Skeleton
The Precursor Sea Dragon Skeleton was a cut skeleton that is dead Sea Dragon remain. The item could be spawned using the command. But the item can not be spawned by using the command "spawn".

Precursor Warper
The Precursor Warper was a cut creature which Jo Jeffreys mentioned in the story in EA1-EA5. The item could be spawned using the command. But the item can not be spawned by using the command "spawn".

Purple Tablet
The Purple Tablet was an item that could be used to disable forcefields bound to terminals marked with the tablet's symbol. In Below Zero, the Purple Tablet could grant Robin access to a cache containing three Large Ion Cube Deposits. Prior to the Frostbite update, the tablet unlocked the Arctic Spires Cache instead. The Purple Tablet is featured and used frequently in Subnautica, and it was likely cut from Below Zero due to most forcefields unlocking upon approach as a result of Al-An's presence within Robin's head. The tablet can still be spawned via the command.

Eight Fragments for the Purple Tablet could be found in the Arctic Spires.

Purple Vents Salvage
Purple Vents Salvage was an item that was required to repair the Alterra Communications Tower. The salvage was found in the Purple Vents among scattered debris, and later behind a panel in the third section of the Mercury II, requiring a Laser Cutter to access it. Eventually, it was removed for unknown reasons and the repair was changed to instead require an Advanced Wiring Kit until that was changed in a story overhaul.

The salvage is still spawnable using the command.

Ship Wreck Salvage
Ship Wreck Salvage was a initially a companion item to Purple Vents Salvage and was also required to repair the Communications Tower. It was found in the engine room of the rear section of the Mercury II wreck, behind a panel that had to be cut open with a Laser Cutter. Later the Purple Vents Salvage was changed into a second Ship Wreck Salvage and the repair changed to require one Ship Wreck Salvage and an Advanced Wiring Kit: the duplicate had no other in-game function and simply provided an alternative way to acquire the item.

Both Ship Wreck Salvages were removed during the major story rewrite, later replaced with scanning Parallel Processing Units.

Supply Drop
Supply Drops were large crates deployed by Vesper Station following various milestones after Robin repaired Radio Tower 7. They would provide items helpful or necessary for progression. The Supply Drop mechanic was cut because of the new story, though the supply crate model itself is still used in-game as scenery such as in a Tech Site located in the Arctic Kelp Forest, a Seatruck Wreck in the Purple Vents, in the opening intro, and Omega Lab

They can still be spawned in-game by using the command. When spawned, it will have its parachute open and will create a ping on the players map. It will always hold a empty PDA and a Data Box.

Vesper Station
Vesper Station, or Space Station Vesper, was an Alterra orbital station that was used for monitoring activity on 4546B and sending down Supply Drops. It was cut with the introduction of the new story. After the release of the Frostbite update, it was repurposed as a satellite and can only be seen in the new story's introductory cutscene. It was referred to as the "Sentinel" between the Frostbite and Salad Days updates.

White Tablet
The White Tablet was a story item that was used to access the Architect Gate Base. Prior to the Ice Worm update, it was a placeholder Orange Tablet that could be acquired from the older incarnation of Marguerit Maida's Base located in the Methane Ice Caves. The White tablet is still spawnable via the command. The White Tablet was first planned to be used in the first Subnautica, but was cut from that game as well.

Bioscanner
Bioscanner=

Biosample=

The Bioscanner was a story tool that Robin used to extract a biosample from her own body to send to the Vesper after Sam tells her that her biometrics are abnormal, which occurred immediately after resurfacing from Sanctuary Zero. The Bioscanner used the old Transfuser model and icon, and was cut due to storyline changes.

Deployable Drill
The Deployable Drill was a tool that could be used to break frozen resources out of large blocks of ice found on the land. The item was to be damageable by bad weather conditions. This item would have likely served a role in Act II of the Story. The Drill was cut being cited as Obsolete Tech along with various other items serving no game play use leftover from earlier versions. The Drill item is still spawnable using the command.

Fire Extinguisher
The Fire Extinguisher was a piece of Equipment from the original Subnautica that would have been used to put out fires. When used underwater, it would push the player in the opposite direction of where they aimed. At some point in development, the Fire Extinguisher was listed as a Cut Candidate on the developer favro, and was eventually cut from the game.

The reason this item was cut is unknown, although it is possible that this was due to there being only a few places in-game where it would have made sense to be useful.

Lightweight High Capacity Tank
The Lightweight High Capacity Tank was a piece of equipment and an upgrade to the High Capacity O₂ Tank that featured in the original Subnautica. It would have been crafted at the Modification Station.

Just like the High Capacity O₂ Tank, it boosted Robin Ayou's oxygen supply by 90 units for a total of 135 units. However, it had a lower weight than the High Capacity O₂ Tank, which allowed for a smaller penalty to movement speed while retaining the bonus of an increased Oxygen supply.

The player would have equipped the Lightweight High Capacity Tank in the tank slot of the Paperdoll UI in order to benefit from it. While not equipped, it took up six slots (2&times;3) in the inventory.

The reason this item was cut is unknown.

Remote Scanner
The Remote Scanner was a planned craftable tool. Its intended function is unknown.

Repulsion Cannon
The Repulsion Cannon was a tool and a sidegrade to the Propulsion Cannon that could be crafted at the Modification Station. While the Repulsion Cannon cannot pick up items like the Propulsion Cannon can, it pushes objects away with much more force and for a longer distance than the Propulsion Cannon can.

The Repulsion Cannon could be used to repel aggressive fauna, including extremely large creatures. Another use was to push debris.

It used to be found in Sea Monkey Nests, but was swapped with the Prawn Suit Grappling Arm.

The reason this item was cut is unknown.

Energy
The Repulsion Cannon was powered by a Battery or Ion Battery. Each shot used 4 units of its Battery's energy. Its Battery could be replaced by pressing. The Swim Charge Fins could have also been used to recharge its Battery.

Recipe
The Repulsion Cannon was crafted in the Modification Station.

Stasis Rifle
The Stasis Rifle was a tool that could be crafted with the Fabricator. It would occupy four slots in the player's inventory. When fired, the projectile would continue in a straight-forward line until it either hit a target or dissipated. Upon contact with a surface or creature, the projectile would turn into a Stasis Orb, the radius of which depending on how much you charged the weapon.

The Stasis Rifle was fully implemented in Subnautica and was included in early builds of Below Zero with fragments present in the Thermal Spires and the Twisty Bridges, but was later removed because of it being too overpowered.

Ultra Glide Fins
The Ultra Glide Fins were a piece of equipment and an upgrade for the Fins that could've been fabricated using the Modification Station. They were twice as fast as regular fins, allowing Robin to swim 30% faster than she could without them.

The player would have equipped the Ultra Glide Fins in the feet slot of the paperdoll UI in order to benefit from it. While not equipped, they took up four slots (2&times;2) in the inventory.

The reason this item was cut is unknown.

Hoverboard
The Hoverboard was an item that was never mentioned on the Developer Favro, but appeared in-game through console commands. It had no model and used the Seaglide item icon. Despite having no interactions, it can be assumed that the Hoverboard would have been used to traverse the land in a similar fashion to the Snowfox, which it was likely scrapped in favour of. It is spawnable in-game using the command " ".

Hovercraft
The Hovercraft was a concept vehicle developed very early in 2018. Although it never made it into a public version of Subnautica: Below Zero, it was fairly far along in developed behavior, including a control system, some animations, and particle effects. A video listed here shows it in use in a very early version of the arctic terrain. It would have been very similar to the Snowfox had it been added.

Seatruck Reversing Camera
The Seatruck HUD previously included a small reversing camera which appeared automatically when the vehicle was backing up. When it was implemented, it showed only terrain, with none of the various "underwater" effects applied to it, and it would be blocked entirely if the final module was a Seatruck Docking Module with a Prawn Suit attached. It was likely cut due to it being too resource-intensive to render both a front and rear view with proper water effects: at present there is no replacement for it.

Seatruck Planter Module
The Seatruck Planter Module was a Seatruck module that would have been a mobile space for the player to grow plants inside their Seatruck. The model, when it could still be accessed, only had a bare interior with a single Plant Pot in the center. Fragments of the module (visually, placeholder Seatruck Aquarium Module fragments) spawned in the vicinity of Margurit's Base in many later builds (including around the edges of the Tree Spires and Deep Purple Vents biomes), but due to missing setting files the module could not be built even if the required number were scanned, and the "unlock" command would not provide a Blueprint. These Fragments were finally removed from the game in build 29886.

Seatruck Energy Efficiency Upgrade
The Seatruck Energy Efficiency Upgrade was a Seatruck upgrade which decreased the vehicle's power use when moving.

Recipe
This item was crafted with the Fabricator or the Vehicle Upgrade Console.

Seatruck Heat Recharging Upgrade
The Seatruck Heat Recharging Upgrade was a potential Seatruck upgrade. As its name suggests, if this upgrade were to be installed, the Seatruck would recharge power around heat sources such as lava geysers.

The reason this upgrade was cut is unknown.

Seatruck Thruster Upgrade
The Seatruck Thruster Upgrade was an unfinished Seatruck upgrade. Before being cut, it would've increased the Seatruck's maneuverability at the cost of energy efficiency.

The reason this upgrade was cut is unknown.

Engine Efficiency Module
The Engine Efficiency Module was a Prawn Suit Upgrade which increased the power efficiency of the Prawn Suit.

The Engine Efficiency Module recycled heat by-product to minimize power inefficiencies. Each Module reduced power use by 15% and could be stacked with up to four modules resulting in a maximum power efficiency of 60%.

Recipe
This item was crafted in the Vehicle Upgrade Console.

Hull Reinforcement
The Hull Reinforcement was an upgrade for the Prawn Suit.

It provided the Prawn Suit a permanently hardened chassis before collision, eliminating damage under normal conditions.

Defense Value
This only affected damage from collision with terrain. Other sources of damage such as aggressive fauna did full damage.
 * 1 Hull Reinforcement -50% damage taken
 * 2 Hull Reinforcements -75% damage taken
 * 3 Hull Reinforcements -87.5% damage taken

Recipe
This item was crafted in the Vehicle Upgrade Console.

Clear Skies
Clear Skies is a weather type in which neither snow nor rain falls, and the clouds are mostly cleared away. This type of weather was scrapped in favor of lighter weather events, such as light snow. Clear skies can still be initiated using the command.

Cold
Cold was a weather type almost identical to the Clear Skies and Calm weather events. It was previously triggerable using the command  but its data has since been removed.