Oxygen Not Included is a space-colony simulation game. Deep inside an alien space rock your industrious crew will need to master science, overcome strange new lifeforms, and harness incredible space tech to survive, and possibly, thrive.
Recent Reviews:
Very Positive (475) - 93% of the 475 user reviews in the last 30 days are positive.
All Reviews:
Very Positive (11,737) - 91% of the 11,737 user reviews for this game are positive.
Release Date:
May 18, 2017

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Early Access Game

Get instant access and start playing; get involved with this game as it develops.

Note: This Early Access game is not complete and may or may not change further. If you are not excited to play this game in its current state, then you should wait to see if the game progresses further in development. Learn more

What the developers have to say:

Why Early Access?

“Since 2012, Klei has used Early Access as a tool to gather feedback and build our games in collaboration with our community, producing games like Don’t Starve, Don’t Starve Together and Invisible Inc.. We’ve found this process works for us, and we hope you find it works for you, too.

Our current project, Oxygen Not Included, has already majorly benefited from the feedback provided by players during its Alpha period. By releasing this game in Early Access, we hope to continue to grow our community and get more people involved in its development.”

Approximately how long will this game be in Early Access?

“We still have a lot more in store for Oxygen Not Included, and plan to continue growing and updating the game well into 2018.”

How is the full version planned to differ from the Early Access version?

“The plan for the full version of Oxygen Not Included is to create even more content to allow players to manipulate, automate, and harness the world their Duplicants live in. Duplicants will also become more robust as their needs and abilities evolve over time. To complement this, there will be new biomes to discover, new creatures to interact with, world events to deal with, and more.

We will also be exploring the lore of the game, slowly uncovering the history of the world and why the duplicants are trapped on a giant rock hurtling through space.

Mod support is also very important to us, so we expect to have full workshop support by launch or shortly thereafter.”

What is the current state of the Early Access version?

“Oxygen Not Included currently contains all the core systems that will be evolved and iterated upon during Early Access such as thermodynamics, density, plumbing, stress and hunger. The game has already been played by over 150,000 players in its current state, many of whom report hundreds of hours played. We’re amazed by the breadth and depth of creations that players have made and we’re looking forward to building upon that.”

Will the game be priced differently during and after Early Access?

“The base price may be increased upon release from Early Access.”

How are you planning on involving the Community in your development process?

“We're continually talking to our community about our design process and keeping them informed of our decisions and improvements with regular updates. Please join the discussion on our forums at http://forums.kleientertainment.com/forum/118-oxygen-not-included/”
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Recent updates View all (41)

September 6

Rocketry Upgrade - Available Now!

Rocketry Upgrade

Since breaking through the surface of the asteroid our Duplicants have developed a curiosity for the endless cosmos that exists outside their little space rock. That’s right, the Duplicants have begun developing their very own space program!

They’re now able to build massive rockets, train as astronauts, and journey on missions into space to bring back the resources they find.

A big thanks to everyone who participated in the testing branch. You’re helping to make the game better and we always appreciate that effort.

What’s New in the Rocketry Upgrade?

Key Features:
  • Rockets: Several new “Rocket Module” buildings for spacecraft construction.
    • Command Module
    • Petroleum Rocket Engine
    • Liquid Fuel Tank
    • Solid, Liquid, Gas, and Biological cargo containers
  • New buildings to support rocket-related research and development
    • Research Telescope
    • Space Cadet Centrifuge
    • Oxylite Refinery
  • A new UI screen for interacting with your fleet of rockets and their missions
    • Five mission destinations
  • A new critter and plant which can be brought back from space
    • Gassy Moo
    • Gas Grass
  • Several new Codex entries to unlock over multiple playthroughs
  • New elements which affect Steel and Natural Gas production
    • Sour Gas
    • Fossil
    • Sulfur
  • Buildings for gas bottling and emptying
    • Canister Filler
    • Canister Emptier
  • Buildings for storing gases and liquids
    • Liquid Reservoir
    • Gas Reservoir
  • A couple new settings for custom games
    • Hunger rate setting
    • Morale stress setting
    • The "No Sweat" game mode preset has been added to help tailor your experience to your preferred playstyle.
What's Next?

We feel the rocketry upgrade content has opened the door to further space industry related content. We’re looking forward to expanding that stage of the game further. We intend to expand the space industry content and systems in the next update.

We’re also getting close to completing the pre-launch features we planned in last year’s roadmap. We feel it’s approaching time to shift our focus to polish, usability, and content backfill. There is plenty of work to be done in those categories.

You can read more about that in this announcement.
For full patch notes and more info, head over to the official forums: https://forums.kleientertainment.com/forums/topic/95248-rocketry-upgrade-now-available-284571/

[GAME UPDATE] 285480 - 9/13/2018
  • Updated Korean and Chinese translations.

[GAME UPDATE] 285039 - 9/10/2018
  • Improve some of the framerate hitches introduced in the rocketry upgrade.
  • Fixed an issue with translation preview images not appearing when subscribing to languages in the workshop.
  • Fixed a crash that could occur on load if you had an astronaut in space assigned to their own schedule.

[GAME UPDATE] 284634 - 9/6/2018
  • Updated next update timer.
  • Fix for dupes sometimes not delivering to storage lockers when using higher priority conveyor storage.
  • Fixed duplicant centrifuge animation.
  • New biological cargo bay art.
  • Fix for fishes not being able to swim through tiles under construction.
  • Gas bottler sound hookup.
124 comments Read more

July 26

Expressive Upgrade - Available Now!

Though originally thrown together by cruel cosmic circumstance, the Duplicants of the colony have weathered incredible hardships together and come out the other side as stronger friends for it. Armed with their new talents of self awareness, compassion and extreme friendliness, our intrepid Dupes are now fully committed to supporting each other through life in the colony - the good times, and the bad. 

But mostly they'll just chat about cute Hatches.

What's New in the Expressive Upgrade?

Duplicant Interactions

Duplicants have new powers of self expression and are now more aware of the colony, themselves, and even their peers. New animations, expressions, and interactions have been added to help the Duplicants convey what's happening to and around them.

Key Features
  • Reaction Animations: Duplicants will now visibly react when they gain new status effects and notice when important things happen around them.
  • Interactions: Duplicants will greet their friends in the halls, chat a bit while working, and compliment each other on a job well done. Turns out they're not alone on this asteroid!
  • Conversations: Do you like Mushbars? I like Mushbars! Mushbars are pretty good. You're such a good listener, you know?
Scheduling and Personal Time

As part of their new self-awareness, Duplicants have become concerned about about their Morale. Just because they're buried under miles of rock and slime (and half of them have embarrassing GI problems) doesn't mean they can't be happy!

Key Features
  • Scheduling: Colonywide schedules can now be adjusted, not only to give the Duplicants much needed Downtime at the end of the day to socialize and unwind, but also to ensure they empty their bladders before they run off to work!
  • New Recreation Buildings: While the most basic of breaks can be accomplished by hanging out by the Water Cooler, Duplicants can really let loose at the local Jukebot or Arcade Cabinet!
  • Morale Expectation: Job expectations have been unified into a single Morale rating, which encompasses Duplicants' food, lodgings, activities, and whatever else on the asteroid that they find fulfilling.
And More!
  • New Mini Transformer: A new Mini Transformer has been introduced to improve technological progression through the Research Tree. Pick up the mini version for a quick start into Transformer usage, then build the full Transformer for a real challenge!
  • Discoverable Lore Entries: What was "Gravitas", and what was their purpose? How did the Duplicants end up on the asteroid? Inspect buildings, critters, and more to fill your Database and start unraveling the mystery!
  • Completed Animations and Sounds: The rest of the Critter animations, including babies, wrangling, and morphs have been completed, along with a number of buildings which previously had been silent.
  • Tons of bug fixes, rebalances, QOL additions, and more!
We'd like to thank everyone who participated in the Expressive Upgrade Test Branch, submitted your crash and bug reports, and gave your feedback in our Suggestions Forum. We're always grateful to hear your thoughts and thank you for the time spent playing our game.

Now go take a break!

For more info, head over to the official forums:https://forums.kleientertainment.com/game-updates/oni-alpha/279457-r525/

[GAME HOTFIX] 280450 - 8/2/2018
  • ArcadeMachine plays unique player one, player two, and co-op anims.
  • Recreation buildings now list their morale effects.
  • Water cooler and espresso machine now list their mass requirements.
  • Roles Screen: Show expectations on unemployed dupes; make dupe tooltips pop from the dupe name as well.
  • Rooms now explicitly mention the effects they have.
  • Storage lockers are now considered full if they have less than 0.5kg of space left. This should prevent dupes from attempting to top off storage lockers with just a few grams.

[GAME HOTFIX] 280243 - 8/1/2018
  • Fix for graphical corruption happening in the main menu on Linux.

[GAME HOTFIX] 280216 - 8/1/2018
  • Fixed a crash that could occur when dupes walked through an area that previously contained suit lockers.
  • The word "EggShell" should now be translatable.
  • Moved Morale next to stress in the vitals panel.
  • Added some Morale related tips.
  • Fixed missing string reference: "Any".
  • Fixed filter status item not showing the correct element.
  • Fixed a crash that could occur after a Dupe died.
  • Updated Korean and Russian translations.
  • Fixed a crash that could occur on Linux when generating worlds and when loading previous save files.
  • Fixed dupes getting stuck animating in place.
  • Improved Morale display in consumables screen.
  • Fixed a crash that could occur when using the sandbox stamp tools.
  • Fixed a crash that could occur if a creature fell off the map.
  • Fix for the great hall room type sometimes not getting recognized until you reloaded your save file.
  • "Neutral" morale gives a stress bonus
  • The stress from low morale comes on more gently (but has the same maximum)
  • Custom game settings for morale only apply to negative stress effects (and retuned a bit)

[GAME HOTFIX] 279899 - 7/30/2018
  • Fixed an issue where certain objects such as doors were not loading properly if they were saved in the open state.

[GAME HOTFIX] 279738 - 7/27/2018
  • Fixed an issue where ONI log files were getting flooded with warnings.

[GAME HOTFIX] 279674 - 7/27/2018
  • Duplicants now choose a random dance each time they dance
  • Repair various missing/inaccurate strings
  • Duplicants now get disease from the water in a Water Cooler/Espresso Machine
  • Sand should correctly fall through Bunker Doors
  • Espresso machine is now 3 tiles wide
  • Duplicants will no longer appear to drink water from the wash station if headed to the water cooler.
  • Fix a crash when loading queued Refinery orders
  • Fix a crash in generating the Database
  • Fix a crash when loading some pipe networks
  • New Custom Game Setting to tweak the amount of stress gained from insufficient morale
  • Added a popup when loading an existing save game to help players transition to the new morale system
147 comments Read more
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About This Game

In the space-colony simulation game Oxygen Not Included you’ll find that scarcities of oxygen, warmth and sustenance are constant threats to your colony's survival. Guide colonists through the perils of subterranean asteroid living and watch as their population grows until they're not simply surviving, but thriving...

Just make sure you don't forget to breathe.

Build Extensive Bases and Discover What it Takes to Survive:

Everything in your space colony is under your control, from excavation and resource allocation right down to plumbing and power systems. Resources will begin depleting with your first breath, however, so be sure to dig fast if you want to live.

It’s Mind Over Matter with Stress Simulations:

Keep the psychological impact of survival at bay with fun leisure activities, great accommodations and even better food for your colony. Duplicants each have different and potentially destructive ways of reacting to stress, so be sure to always keep them happy. Whatever the cost.

Avoid Boiling with Thermodynamics:

Temperature control is a constant concern in space; too cold and you'll freeze, too hot and you'll fry. Keep tabs on ambient environmental temperatures and your colony's heat production to maintain a nice, cozy atmosphere for your colonists.

Enhance Efficiency through Complex Gas and Liquid Simulations:

Create interlocking pipe systems to swiftly deliver fuel and liquid to critical areas of your base. Plan well and be rewarded as your colony transforms into an imperishable, well-oiled machine.

Take Charge with Power Grid Simulations

Choose from a multitude of power sources including coal, hydrogen, natural gas or just plain old elbow grease. Manage power runoff, circuit overloads and meltdowns to keep your colony running smoothly.

Always Keep Yourself Breathing:

Enter the Oxygen Overlay and watch air moving through your base in real time. Monitor carbon dioxide accumulation and oversee oxygen generation processes to mold your colony into a veritable deep-space oasis.

Waste Nothing through Extreme Recycling

Make use of every last resource for a base that truly exemplifies efficiency. Recycle waste into precious fuel, process unbreathable gas into air or harness the natural bodily processes of wild creatures for food. If you’re clever, you might even be able to run a base off colonist farts.

Explore Diverse, Procedurally Generated New Worlds:

Summon new worlds with a push of a button. Experience tons of untamed space rocks, then suffocate to death in them!

System Requirements

Mac OS X
SteamOS + Linux
    • Requires a 64-bit processor and operating system
    • OS: Windows 7 (64 bit)
    • Processor: Dual Core 2 GHz
    • Memory: 4 GB RAM
    • Graphics: Intel HD 4600 (AMD or NVIDIA equivalent)
    • DirectX: Version 11
    • Storage: 2 GB available space
    • Requires a 64-bit processor and operating system
    • Requires a 64-bit processor and operating system
    • OS: OSX 10.9
    • Processor: Dual Core 2 GHz
    • Memory: 4 GB RAM
    • Graphics: Intel HD 4600 (AMD or NVIDIA equivalent)
    • Storage: 2 GB available space
    • Requires a 64-bit processor and operating system
    • Requires a 64-bit processor and operating system
    • OS: Ubuntu 14.04
    • Processor: Dual Core 2 GHz
    • Memory: 4 GB RAM
    • Graphics: Intel HD 4600 (AMD or NVIDIA equivalent)
    • Storage: 2 GB available space
    • Requires a 64-bit processor and operating system

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