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Nitrogen Narcosis

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Nitrogen Narcosis

Tybug Studios · Published by Tybug Studios

Content notice: This game contains depictions of Death, Gore, Injury, and frightful situations.

5 user reviews — 80% positive (5 reviews)

Last updated 28 Sept 2026

Nitrogen Narcosis is a thalassophobes deep diving nightmare, set in sinking and sunk abandoned facilities. You and up to 7 other employees wearing the cheapest deep-dive suit money can buy are sent in to recover old materials from these facilities and return it to your captains submarine!

DJCTQ 14Co-op

£6.69

Lowest price we've ever recorded

View on Steam

Prices can lag the live Steam store — always confirm before buying.

Price history

4 Sept 2026Lowest: £6.69 · Highest: £6.6911 Oct 2026

Indie, Casual · 2024 · More £5 - £15 games

Embark on eerie deep dives in Nitrogen Narcosis, an indie casual adventure from Tybug Studios where you and up to seven employees navigate treacherous underwater ruins.

About this game

Nitrogen Narcosis is a thalassophobes deep diving nightmare, set in sinking and sunk abandoned facilities.

You and up to 7 other employees wearing the cheapest deep-dive suit money can buy are sent in to recover old materials from these facilities and return it to your captains submarine!

Experience the descent into madness as you slowly slip into a state of hallucinations from nitrogen narcosis symptoms, all while trying to survive against whatever creatures or mutations lurk inside the facility.

Now, explore the Arctic Circle with the Arctic Freeze Update, which adds a new location, a new creature, and a host of exciting new loot!"

The game is INVITE ONLY and does not currently feature a server browser, this means to play with others you will have to invite them or be invited to a lobby via Steam.

Creatures:

As you explore the facilities you will run across a sweep of creatures,

ranging from

sharks who snuck their way in,

crabs who love to horde loot,

all the way to mutant horrors like specimen 2626,

Facilities:

The facilities you explore play a vital role in your experience,

From entering at the Shallows where the waters surface is still visible and the facilities isn't even flooding.

All the way to the Deep where light is rare, facilities are large, and dangers are everywhere.

Each facility has a special layout that is different with each play sessions, Facilities also contain Key-card based doors, automatic doors, secondary airlocks, and even doors that might be a little to dangerous to open.

System Requirements

Will my PC run this? →

Minimum

Minimum:
  • OS: Windows 10
  • Processor: Core i5 / Ryzen 5 @ 3.3 GHz or better
  • Memory: 8 GB RAM
  • Graphics: GTX 1080 or equivalent - 6GB VRAM

Supported Languages

English

Latest news

  • Patch NotesOfficial

    Nitrogen Narcosis - Deep Vents/Graphics Update is Live!

    Hello everyone, Sedwity here, today I am extremely excited to announce that Deep Vents is here! With Deep Vents also comes the Graphical Improvements! New Location- Added - Deep Vents, Deeper then your crew has ever gone before at the very bottom of what we can explore in your dollar store dive suits, you and the rest of your crew will have to navigate in near pitch black environments avoiding dangerous volcanic vents heating the water near them to unsafe temperatures! {STEAM_CLAN_IMAGE}/45089124/d98c7d28634ed6999b214abd9e57116cd3370527.png Player Hazards- Added - Temperature Sensitivity! the player now has a threat of heat death, this is indicated with a Thermo Element visible on your visor. if you start to heat up you'll need to move away from the heat source to cool down and if you don't you'll begin to take damage over time as you boil in your suit. Graphics/Settings- Added - Real Time Global Illumination using Ray Tracing! by default this setting is disabled but have 4 levels of quality to choose from! (This setting can be expensive on older hardware) {STEAM_CLAN_IMAGE}/45089124/62cbad62a413fd5fce8829b5b1fcd15f5321151e.png Added - Screen Space Reflections, Also using Ray Tracing! this setting as well is defaulted to disabled but just has Global Illumination you'll have the option of 4 quality levels. (This setting can be expensive on older hardware) {STEAM_CLAN_IMAGE}/45089124/938230021a88c4da17d948431ba0ee7a7d7a262d.png If the update is not available try restarting steam! Of course as always we look forward to your feedback which can be sent to us on Discord, Reddit, or the Nitrogen Narcosis Steam Community Hub! Discord! Reddit! YouTube! {STEAM_CLAN_IMAGE}/45089124/d030131f18b16644600d9f5c0ae443266355ab16.png
    Read full article on Community Announcements (sedwity)
  • AnnouncementsOfficial

    Nitrogen Narcosis - Ghost Bay Is Live!

    Hello everyone, Sedwity here, I am excited to announce that Ghost Bay is here! Ghost Bay marks the end of Early Access Period for Nitrogen Narcosis, This update completes everything I had planned for the Early Access Period of the game! The game will continue to receive bug fixes if bugs are reported to us, and the possibility exists for additional content as I and the Team come up with more ideas! For now, below I've listed the Additions and changes featured in Nitrogen Narcosis - Ghost Bay! New Location- Added - Ghost Bay, In these shallow waters, a number of ships have sunk or gone missing. Sailors often report hearing strange sounds from the depths below. Because of this, both the sailors and the facility managers jokingly refer to the area as Ghost Bay. Just be careful not to get too close to some of the wrecks—they may house deadly creatures! {STEAM_CLAN_IMAGE}/45089124/953e2cd85188bedffbbbedfb1ff11d385f9c2653.png Loot- Added - Missing Dinosaur Toy to higher tier loot pools. General/Technical- Improved - Load times for all Facilities. Fixed - Issue that would cause Fall damage to be reduced when it shouldn't be. Fixed - Loot Selling Machine not collecting loot if to much loot was dropped on it. Changed - Single Click Usable Items (Oxygen tanks, etc...) will now work on button PRESS instead of Release. Changed - Area loading to help prevent issue where water wouldn't render at first. Changed - Menu to reflect "Ghost Bay" update. Removed - Early Access Logging to help improve performance. If the update is not available try restarting steam! Of course as always we look forward to your feedback which can be sent to us on Discord, Reddit, or the Nitrogen Narcosis Steam Community Hub! Discord! Reddit! YouTube! {STEAM_CLAN_IMAGE}/45089124/d030131f18b16644600d9f5c0ae443266355ab16.png
    Read full article on Community Announcements (sedwity)
  • AnnouncementsOfficial

    Nitrogen Narcosis - Beached Whale is live!

    Hello everyone, Sedwity here, I am excited to announce that Beached Whale is finally here! New Location- Added - Beached Whale, in the shallows in an unidentified part of the world sits a slightly older Congo Facility and a recently beached cargo ship, the "Isla de los Extintos transport." Upon beaching itself some of the cargo from the ship fell into the water below landing on the sea floor creating a new habitat for the local wildlife. {STEAM_CLAN_IMAGE}/45089124/750b57687f87c2f17114527389a181328ab88ba4.png New Creature- Added - Seafloor Crab, The Seafloor Crab is a smaller version of the hoarder crab wandering around the outside of the Facility, in the shallow waters, be sure to stay clear of these little guys, as just like their big brothers if you walk in front of them, or steal loot nearby they will become hostile! {STEAM_CLAN_IMAGE}/45089124/4ae8b95753391c95b483e978d57e870077787b87.png New Console- Added - Information Dictionary Console! This new interactable console located inside of the Beached Whale Facility is a great place to see more info about the Facility, The Experiments, Wildlife, and even control some of the Facilities still functioning modules. {STEAM_CLAN_IMAGE}/45089124/9d0fff381929e37d559377c83db921d63082ec62.png --Other-- Entities- Changed - Outside Sharks will now follow smells players from further away. Changed - Outside Sharks to track players more accurately around obstacles. Changed - Outside Sharks will now be far less jittery when making sharp turns, and will overall look better. Further changes to these sharks are planned for future updates to make them look even better. Locations- Fixed - Out of bounds exploit in Shallows. Fixed - Kelp and other vegetation appearing inside some objects in some locations. Fixed - Metal Flooring In Moonpool not using metal walk sounds - Shallow Depths. Fixed - Metal Flooring in Pipes room not using metal walk sounds - All Locations. Loot- Added - Shark Plush can now be squeaked. Added - Blowtorch will n...
    Read full article on Community Announcements (sedwity)
  • Patch NotesOfficial

    Future Update - Beached Whale!

    Hello everyone, Sedwity here again to tell you all about some of the upcoming content and features being added to Nitrogen Narcosis! Locations- We are adding a new location called "Beached Whale." This new location is a Facility set in shallow, rough, uncharted waters where a large containership has run aground and spilled some of its cargo overboard onto the seafloor below! Be sure to watch your head as you walk to the Facility beneath the ship. {STEAM_CLAN_IMAGE}/45089124/750b57687f87c2f17114527389a181328ab88ba4.png Entities- New - seafloor Crab! The seafloor Crab is a smaller version of the hoarder crab wandering around the outside of the Facility, in the shallow waters, be sure to stay clear of these little guys, as just like their big brothers if you walk in front of them, or steal loot nearby they will become hostile! {STEAM_CLAN_IMAGE}/45089124/4ae8b95753391c95b483e978d57e870077787b87.png Changes - Sharks outside of the Facility, especially in Beached Whale are more aggressive toward those who smell. These Sharks will now chase you from further away if you are to stink up their ocean with your blood or anything you may have picked up inside the Facility. {STEAM_CLAN_IMAGE}/45089124/6d76a6413936c05156b884f9dddd368ecc839090.png As always we look forward to your feedback! Discord! Roadmap! Reddit! YouTube! {STEAM_CLAN_IMAGE}/45089124/d030131f18b16644600d9f5c0ae443266355ab16.png
    Read full article on Community Announcements (sedwity)
  • AnnouncementsOfficial

    We're back and Arctic Freeze Is Live!

    Hello everyone, Sedwity here, announcing that we are back and have made it through the storm. We also are excited to announce that we will be taking Arctic Freeze out of the BETA-BRANCH and moving it to the live branch! Below are the Arctic Freeze Patch Notes once again for anyone who missed our last post. New Location- Added - Arctic Freeze, This new Facility set deep within the Arctic Circle built into the walls of an icy underwater cave is one of the largest Facilities Congo will allow its employees to venture into. Unprepared employees should use extreme cations, the long walk from the Submarine to the Facility can take a lot of oxygen, and the Facility itself is no safer. Some doors inside have completely frozen over requiring the use of a Blow Torch to thaw them open. New Creature!- Added - Lice!, “Lice” is a genetic failure derived from a Scorpion, random Crustaceans, an Ant, and an assortment of Sea Anemone. The creature cannot see, hear, or smell, but will react violently to being touched. Once Lice has been touched, they seem to have an innate ability to home in and track their prey using vibrations in the environment. Genetic failures extend from its senses to its ability to walk, with legs easily becoming dislocated from the rest of the body causing them to almost flop around as they hunt. Loot- Reworked - Loot spawning will now work off of a weighted loot pool, This new system will make more valuable loot rarer and even allows loot to be Facility specific. Items- Added - Icons to Interaction Info to inform players if an item smells, makes them smell, makes noise, or makes them make noise. Added - Blow Torch, This item can be used to "Melt" icy objects, it can also be used to burn Creatures, so make sure to watch where you are pointing it! (This item comes in Black Market and Harbor Variants) Added - Dinosaur Toy, This item has a button allowing the toy to "roar" creating a short lasting Decibel effect on the player who uses it, but it is pretty fun to p...
    Read full article on Community Announcements (sedwity)

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