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 (291) - 91% of the 291 user reviews in the last 30 days are positive.
All Reviews:
Very Positive (16,424) - 93% of the 16,424 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 (46)

March 18

Oxygen Not Included Roadmap March 2019

Originally posted on the official forums

Hey everyone!

It's now been over two years since the first public Beta for Oxygen Not Included, and it's finally time to fully launch the game! The third Quality of Life Upgrade is coming to you on Tuesday April 16th, and then there will be one last update to complete Early Access.

In late May, we will be coming out of Early Access with new content (3 new biomes, new creatures, new buildings, and more), and official mod support, making it possible for players to create game content of their own.

With that, we feel Oxygen Not Included is ready for a full launch. After we've officially launched, we will continue to make quality of life improvements and bug fixes, while the bulk of the team will be moving on to building DLC for the game, where we can explore further ideas and expansions to ONI's world.

All in all, it's been a rather surreal journey for the team. The game is extremely intricate, with so many moving parts; when we first designed it, we weren't sure how many people would be interested in embracing their inner scientist, but 1.5 million players later, we're happy to say the experiment has worked out.

Thank you so much for playing our game. Thank you so much for all your bug reports, your feedback and all the wonderful support you have given us during this journey. We look forward to launching this game with you.
64 comments Read more

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!
HOTFIX - 310952
  • Once again able to build Pitcher Pump in front of back wall buildings
  • Fix gas leaking if Airflow Tiles or Mesh Tiles are built as replacement tiles
  • Fix priority on Neural Vascillator so Dupes with raised priorities will actually use it
  • Fix crash when building wires and pipes
  • Fix crash when destroying a Geyser in sandbox mode
  • Fix crash when Dupes are Rummaging
  • Increase the priority of Rummage errands
  • Wrangle Tool now correctly sets priority
  • Fix crash when one of the Dupes in a conversation disappears for some reason
HOTFIX - 311032
  • Fix crash when changing Dupe names with Chinese input
  • Fix crash when building plumbing/vents on single-core computers
  • Fix Duplicants getting stuck in a delivery loop if a locker set set to !! priority
HOTFIX - 311694
  • Red alert no longer prevents Duplicants from catching their breath (They will however, hold it for longer than usual)
  • Dupes in Red Alert will get the correct "holding breath" face when holding their breath
  • Can now set emergency priority with the '0' key the same way the other number keys set normal priorities.
  • Fix Filtered Output Pipe icon on the plumbing overlay
  • Fix liquid/gas input incorrectly updating liquid flow if the entire mass was consumed
  • Fix crashed caused by Errand time reporting
  • Cleaned up which systems were responsible for Red Alert from Emergency
  • Priority errands. Now it's controlled directly from the building's priority, so setting the building priority will immediately toggle Red Alert on or off, regardless of whether there is an active chore. This makes it more consistent in all cases and improves the feedback of toggling the building's priority.
  • Buildings and other objects with emergency priority now have a "!!" status item visible in the main game view
  • If a building was only temporarily prioritizable (e.g. because of a Repair errand), it will stop causing Red Alert when that errand is finished.
  • Several temperature and mass related crashes were actually recoverable, so just put a warning in the output log and keep running the game.
  • Fix a crash then the Med Bed is set to emergency priority
  • Duplicants are allowed to remain in a med bed during Red Alert
  • Fix the priority numbers on the Minion Todo List being off by one.
HOTFIX - 312373
  • Fix for Sweeper Arm sometimes not being able to reach any storages even when they're in plain sight
  • Add some additional checks to try and track down invalid Errand crashes
  • Fix another crash with input with IMEs such as Chinese
  • Updated Korean and Chinese translations
  • Fix a crash when setting Dupe priority to "disabled"
95 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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