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This page serves to chronicle any significant content that has been removed from Subnautica.



The Accumulator was a machine meant to store power for Seabases. It is unknown why it was cut. 

Amino AcidEdit

Amino Acid

Amino Acid was an unimplemented raw material. It was used to create Graphene.

Botanical Analysis MachineEdit

Botanical Analysis Machine

The Botanical Analysis Machine was a machine meant to study Flora, it was cut when the Scanner was added.

Current GeneratorEdit


The Current Generator was a deployable crafted using the Fabricator. The Current Generator took up four slots in the player's Inventory, that meant the player could carry 12 of them if their inventory was cleared first. The Current Generator used no power and could be left on all the time.

Once the device was deployed and activated, it would produce a column-shaped hydro-current from an emitter on its front. This stream could push small and large objects alike, including Lifepod 5 and the Reefback. However the Seamoth and Cyclops were not affected by the Current Generator.

The Current Generator has been scrapped and is no longer available in the game.

Fragment AnalyzerEdit

Fragment Analyzer

The Fragment Analyzer was a Placeable Item that was used to decode Fragments into Blueprints. Only one fragment was needed to research a blueprint however the Fragment Analyzer could research four fragments at a time. The progress of analysis was displayed when the player looked at the Fragment Analyzer. At one point a Fragment Analyzer was pre-installed inside the Lifepod. The functionality of the Fragment Analyzer was given to the Scanner and the fragment system was reworked.



Graphene was a Material that was crafted at the Fabricator.

Lithium Ion BatteryEdit

Lithium Ion Battery

The Lithium Ion Battery was an upgrade to the Battery that was crafted at the Modification Station. The Lithium Ion Battery held twice as much energy as the Battery. The Lithium Ion Battery has been remade and is now called the Ion Battery, instead the crafting recipe uses an Ion Crystal instead of Lithium.



Nanowires were a nano-scale Electronic item crafted from Mercury Ore that was intended for quantum devices and sensors.



The early Observatory was a small primitive glass box that could be constructed with the Mobile Vehicle Bay. Unlike the newer Observatory it was not a Seabase module and was instead freestanding. It had two entrances and was primarily used to observe Fauna and the environment. The only way to move it was to use Floaters.

Old BioreactorEdit


The old Bioreactor was built outside of a base and could only be powered using Tree Mushroom Samples and Creepvine Samples.

Old Nuclear ReactorEdit


The old Nuclear Reactor was built outside of the Seabase and had to be supplied with raw Uranium to function.

Power GeneratorEdit

Power Generator

The Power Generator was a Placeable Item that generated Power for Seabases using Power Cells. The Power Generator had a capacity. In the starting of Subnautica it was the only method to give energy to Seabases, and it didn't need any kind of item to generate the energy.



The Powerglide was an upgrade for the Seaglide, it was 3x the speed of the Seaglide and had a turbo boost that drastically increased the speed of the Powerglide. The Powerglide's model was identical to that of the Seaglide's. It was removed due to the Xbox One barely being able to handle the speed of the Seaglide.



The Terraformer was a tool allowed the player to remove material from one place in the world and deposit it somewhere else. A counter that showed the current amount of material held by the device.

Terraformer's Removal from gameEdit

The Terraformer was removed due to issues with save file sizes.[1] The Terraformer model may later be used for an unknown purpose in later updates, as the developers thought the model was "too cool". [2]

Specimen AnalyzerEdit

Specimen Analyzer

The Specimen Analyzer was a machine meant to study Eggs. It was removed when the Alien Containment and Scanner were added.

Shell Hull Reinforcement ModuleEdit

Shell Hull Reinforcement Module

The Shell Hull Reinforcement Module was an Upgrade Module for the Cyclops. When used to upgrade the Cyclops, it added 1600 meters to both the safe depth and the crush depth. This item was removed when the new, non-stacking upgrade system was introduced.

Chelonian Hull Reinforcement ModuleEdit

Chelonian Hull Reinforcement Module

The Chelonian Hull Reinforcement Module was an Upgrade Module for the Cyclops. When used to upgrade the Cyclops, it added 2800 meters to both the safe depth and the crush depth. The Chelonian Hull Reinforcement Module was the strongest reinforcement module. To create the module, blueprints from the Specimen Analyzer were required as Reefback DNA was part of the recipe. This item was removed when the new, non-stacking upgrade system was introduced.

Entity GalleryEdit

The entity gallery was a series of textureless, white boxes that could be spawned by typing "entgal" into the console. On top of each box an entity from the world of Subnautica could be found. Of the various things found here, the model of the scrapped "Sandworm" creature was perhaps the most notable.

The entity gallery's removal may have been due to the multiple occasions in which Precursor objects were mistakenly added to the gallery; This resulted in Precursor objects and bases being revealed to the public long before they were intended to be. The most well known example of this was the "Rainbow Update" in which many of the games textures were converted to multicoloured squares, this was because the game had gone over the limit of textures by the accidental addition of a work-in-progress Quarantine Enforcement Platform model and several other Precursor props to the gallery.


  1. Dated December 22, 2015.
  2. Cory Strader on the Terraformer(June 25, 2016)

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