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 (376) - 93% of the 376 user reviews in the last 30 days are positive.
All Reviews:
Very Positive (16,099) - 93% of the 16,099 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 bit more in store for Oxygen Not Included, and we plan to exit early access some time in this year.”

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 1,500,000 players, 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 (45)

February 19

Quality of Life Upgrade Mk II Available Now! - 309851

Hello spacefriends!

We're keeping the improvements train rolling today with the release of our latest Quality of Life Upgrade, QoL MK II! Our team has continued to scour their bug lists and review all the feedback you've given us here in the forums, and we've been working hard to improve our game systems and overall game performance.

A high level of focus in QoL Mk II has been directed toward adding tools to communicate how Duplicants are choosing jobs or moving around your base, giving you better, more efficient control of your colony. We've also added a whole batch of unusual Space Artifacts for you to display on your Pedestals, and some exciting new upgrades to the Printing Pod's capabilities. And we've knocked out all kinds of bugs and crashes thanks to your reports!

Throughout the rest of the QoL Upgrades we will be continuing to monitor your feedback for more information on how we can improve the game. We've made some serious progress on bugs and polish this update, but there's still lots more to come! We've got even more systems to balance and optimization to perform.

As of the QoL MK II release, Oxygen Not Included is now also available on the Epic Game Store. The game is still in Early Access, and we plan to follow the same Testing/Release schedule on Epic that we currently do on Steam. We're supporting both platforms that the Epic Game Store supports, currently PC and Mac.

A big thank you to everyone who participated in our open testing branch, we hope you enjoy QoL MK II!

What's New and Improved?
  • Printing Pod can now print objects other than Duplicants, to give your colony that little extra boost
  • Added a new priority to the Priority tool, "!!". This will make a highest-priority errand and put the base into Red Alert mode until the errand is complete
  • Added a new side screen for Duplicants which shows all the chores they can perform, and what order they will perform them in
  • Added a new "Errands" tab for buildings (other objects coming soon!) which shows what chores are available there and which Duplicants can work on those chores
  • Reports Menu now shows a more accurate and better categorized breakdown of where Duplicants are spending their time
  • Reports Menu now shows how many errands have been created and completed each day
  • "Long Commute Times" notification if Duplicants have a high percentage of travel time in a day
  • New Artifacts can be returned from space missions, either by astronauts or space tourists -- display them on Pedestals for high decor!
  • Eggs can now also be placed on Pedestals
  • Rocket modules now have a "Launch Tower" background that shows where the rocket will land even after it has taken off
  • There have also been many bug fixes and minor improvements.
Check out the full changelist for all the details!
45 comments Read more

January 31

QoL Upgrade Mk 2 Now Open For Testing!

Originally posted on the official forums by Ipsquiggle

Hello astro-friends!

The Quality of Life Upgrades continue to roll out as our team scours their bug lists and reviews all the feedback you've given us here in the forums! We're also still working hard to improve game performance and systems.

A high level of focus in QoL Mk 2 has been directed toward adding tools to help you understand what work your Duplicants are doing around the base and how they're moving through it. We've also added in Space Artifacts for you to display on your Pedestals, and some exciting new upgrades to the Printing Pod's capabilities. And of course, we've knocked out all kinds of bugs and crashes thanks to your reports!

For those who missed it in the previous Upgrade: A public Testing Branch for this Upgrade will once again be available as they have been in the past, with the change that testing periods will now run for 3 weeks instead of the regular 2. Our intention is to provide additional time for your feedback to be heard before these changes go out to the world. (Please note that the Testing Branch will continue to have additional crash reporting enabled and will impact your game’s running performance. Finalized performance improvements won't be noticeable until the Upgrade releases to everyone.)

We look forward to reading your thoughts and opinions on the Suggestions Forum.


This update is absolutely massive - for more details and update notes, head on over to the official forums.

[Game Update] - 306581 - 2/1/2019
  • Deconstructing toilets and other assignables no longer crashes
  • Fix door access controls not being loaded correctly or modifying the pathfinding correctly.
  • Cleaned up tooltips for chores on the Duplicant ToDo list
  • "Sleeping" status is properly bolded and first in the status screen
  • Big change to the Duplicant Time reports on the reports screen: Shows as percentage of the day, time categories have been revised, a few new categories, and the whole screen has been better organized.
  • Fix several overlapping or badly wrapping text problems -- thanks for pointing these out!
  • Updated description for Smooth Hatch
  • Clicking a Dupe on the building Errands tab will jump to that dupe
  • Fix text styles being broken when game language is changed
  • Added in "not existing" dupe time reporting for more accurate daily totals when a dupe is printed or dies
  • Reduce the boldness of bolded text
  • Add missing compostable string
  • Correct Water Geyser typo
  • More accurate Telescope description
[Game Update] - 306670
Hey friends! Wanted to get out a fix for the med beds before the weekend. Have a good one! :)
  • Fixed med bed errand priority to Personal Needs so bedridden dupes will actually get out of bed to pee.
  • Some balance changes to the portal Care Packages
  • Some portal Care Packages are now gated by discovery, others have had their minimum cycle altered
[Game Update] - 306910
  • Duplicants should no longer get stuck in place if they have to hop down on to a horizontal door
  • Text alignment/spacing fixes to the Pedestal screen, Jobs Screen dropdowns,
  • Fix crash when spawning a new Care Package
  • Pedestals correctly set decor on load
  • Fix crash when Duplicants are thinking about their next errand
  • Fix crash when clicking a care package and then a Duplicant on the Printer Pod screen
  • Building errand list and Duplicant ToDo list now show available errands in realtime, along with better messages for why a dupe can't perform the errand at a building (instead of just being blank).
  • Current errand on the ToDo list is shown at the top
  • Fix cases where a Dupe would incorrectly pathfind or get stuck at a access controled door if they approached it from a diagonal.
  • Ladders can now directly replace other ladders
[Game Update] - 308684
  • Fixed issue where pre-printing and post-death time logs were inaccurate
  • Liquid Fuel Tank background now shows up
  • Report Screen headers are now translatable
  • Airflow Tiles and Mesh Tiles now block gasses and liquids from escaping into space
  • All doors now prevent gasses and liquids from escaping into space (art coming soon!)
  • Gasses render in front of background buildings like Drywall
  • All doors can be walked on top of, in either orientation, open or closed.
  • Hotkeys are explicitly inserted into many strings now instead of appended at the end (for Translators)
  • Puzzle Cube artifact displays properly
  • Conduits placed across multiple Hydroponic Farms should no longer block liquids from flowing down the pipe
  • Emergency priority creates notifications to make it easier to find those Errands
  • Games there were saved while a Care Package was in the process of being printed will no longer crash
  • Fix several cases of Duplicants repeatedly picking up micrograms of ore
  • Duplicants will prefer to run across the tops of ladders rather than climbing across them
  • Bunker Doors should no longer animate while the game is paused
  • Anti Entropy Thermal Nullifier no longer incorrectly gets "Too Cold"
  • Fix a crash when trying to save invalid temperatures
  • Updated artwork for many of the rocket module backgrounds
  • Improved some logging for Errand errors to help us track down bugs
[Game Update] - 309354
  • Added background art to all doors to indicate that they prevent gasses from leaking into space
  • Fixed layering on gas rendering. Now all pipes and other background objects are partially covered by gasses, drywall and world background are fully covered.
  • Fix for Dupes incorrectly binge-eating tiny amounts of food
  • Duplicant Errand list correctly hides errands the Dupe would be unable to perform
  • Clicking certain notifications no longer moves the camera to the top left of the world
  • Remove redundant hotkeys in some tooltips
  • Revised artwork for rocket towers
  • Made several previously-untranslatable strings translatable
  • Fetches for micro-amounts are forced to complete
  • "Errands" tab shows on more than just buildings, e.g. digs, critters. Let us know if it's missing from anything still!
  • Fixed more text layout/wrapping bugs
  • Fix a crash when deleting a Duplicant or Critter with sandbox tools
  • Adjust height of the Critter Lure so that it has room for the bait
  • Proper fuel meter shows on the Liquid Fuel Tank
  • Liquid Oxidizer tank meter no longer stays behind when the rocket launches
  • Liquid/Gas/Solid cargo bay meters are hooked up.
  • Adjusted wordings on Rocket checklist to make it more clear when there are problems
  • Red Alert no longer prevents Emergency chores from being completed
  • Fixed priority of Find Somewhere Safer chore
  • Added tooltip for Emergency priority
  • Added priority values into tooltips on the Priorities screen
41 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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