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 (692) - 92% of the 692 user reviews in the last 30 days are positive.
All Reviews:
Very Positive (8,082) - 91% of the 8,082 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 (30)

December 14, 2017

Tubular Upgrade Available Now!

Hey everybody, and welcome to the Tubular Upgrade! The Oxygen Not Included team is going on holiday break so we're squeezing in an early smaller update before we go on vacation. We'll resume our normal update schedule when we return in January.

What's New?


Advanced tube technology has been introduce to the world of Oxygen Not Included as a new tier of transportation, above ladders and fire poles. Using refined plastics, you can now craft new Tube buildings throughout your base and drastically improve travel time while sending your Dupes on a ride.

Key Features
  • Transit Tubes: New Transit Tubes, Transit Accesses, and Tube Crossings have been added to help your Duplicants zoom from place to place in futuristic style. Tubular!
  • Ice Sculptures: Build new glittering ice sculptures in your base for a well-earned decor boost... but be sure to turn the thermostat down.
  • Berry Sludge: A "delicious" new recipe has been whipped up at the Microbe Musher, creating a sludge of mashed up berries with an exceptionally long spoilage time.
  • QOL, performance enhancements, and more: This will, as usual, address many important bug fixes and game crashes, but more importantly it will drastically improve frame rate and functionality in late game saves or bases that met certain conditions (like a great deal of items in storage, for example). Those who saw frame rate crawl in earlier games should see a major change, so get back out there and push the limits of your base expansion!
Frequently Asked Questions

What are the system requirements?
Specs are likely to change, but currently these are the requirements we have. It is highly recommended that you do not purchase if you aren't over this spec as we may have to raise the spec in the future. 
  • OS: Windows 7 64 bit or Windows 8 64 bit or Windows 10 64 bit
  • Processor: I5 2.0 GHz Dual core(or AMD equivalent)
  • Memory: 4 GB RAM
  • Graphics: Intel HD 4600 (AMD or NVIDIA equivalent)
  • DirectX: Version 11
  • Storage: 1.5 GB available space

How often can we expect new updates while you're in Early Access?
All new content is being released as part of our regular game Upgrades every six weeks. Check the update timer in the main menu to see how long to go until the next update!

Is there OSX support for this game?

What about Linux?
Also yes!

What about other platforms(consoles/mobile)?
There are no plans to support any other platforms at this time.

I found a bug/have a suggestion. What should I do?
Come let us know about it on the forums!

Will there be multiplayer?
There are currently no plans to add multiplayer.

Our 6 week Upgrade schedule will resume in the New Year, and our next update after the Tubular Upgrade will land on February 8th. 

Thank you again for supporting our game, and happy holidays from everyone at Klei!

View full update

[Game Update] 247173 - 12/15/2017
  • Fix issue where Duplicants would incorrectly compute paths
  • Fix crash that could occur when exiting to the main menu
  • Layering fixes for Tubes and Tube Tiles
  • Fix bad text for Compostables
  • Fix autosave names getting infinitely long and crashing
  • Updated artwork for the Transit Tube Access
  • Tube Access meter loads correctly
  • Fix crash when typing a '.' in to a number input
  • Correct layout of the audio options screen
  • Diamond can now be stored under the "Miscellaneous" category
  • Clicking outside the world no longer crashes the game
  • Fix for open doors destroying contained elements
[Game Update] 247630 - 12/19/2017
  • tube wall bridge only allows travel along the main axis, not all 4 directions
  • fixed another crash that could occur when using logic to control doors
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December 7, 2017

Tubular Upgrade Preview Available (And Holiday Break!)

Originally posted by Ipsquiggle on the official Klei Forums:

Hey gang!

We're happy to announce the launch of our latest content preview, The Tubular Upgrade! Now, using their discovery of plastic refinement, Duplicants can zoom quickly and safely around your base with brand new Transit Tubes! Just set up some tubes, connect an access point, and WHOOSH! You're ready to propel your Dupes at lightning fast speeds.

If you'd like to help test us test this new Tubular content, the upgrade will be available for open testing one week before it goes live. We always appreciate your feedback!

Team Holiday Schedule

And while we've got you, we'd also like to let you know that over the holidays, the team will be taking a two week break, then resuming our 6 week update schedule starting in the New Year. Our next update after the Tubular Upgrade will land on February 8th.

Thanks for supporting our game, and happy holidays from everyone at Klei!

About Tubular Upgrade Open Testing

The following content is available in the Tubular Upgrade preview:
  • Transit Tubes, Accesses, and Tube Crossings
  • Ice Sculptures
  • Berry Sludge recipe
  • QOL and performance enhancements
    Please be aware that game performance in testing may be reduced as we prepare to make major improvements for release. While your game may run worse during the Open Testing period, this is because we are gathering the information we need to make it better, and are happy to take any bug reports or feedback on performance issues you may have during this time. Thanks!

Check the patch notes for the most up-to-date changes!

What is open testing?

"Open testing" means players get to test drive new content early and give us feedback and suggestions before it goes live. Because this is a preview of the upgrade being released on December 14th, it's pretty likely you'll encounter bugs or crashes while playing these builds. We'll try to fix any problems that crop up as quickly as we can, but it's possible you'll lose progress in your games while playing the preview.

Please also be aware that once a save is loaded in the Tubular Upgrade preview, it cannot be reopened again in the Automation Upgrade or previous builds.

What do I do if I find a crash or a bug?

Post it up on the Bug Tracker and we'll fix it as soon as we can. If you can attach a copy of your save file to your report, that helps us even more as we can pinpoint the source of problem more quickly.

Do I have to play the open testing build?

Nope! If you'd prefer to only play a stable build, you can continue to play in the current Early Access branch until the Tubular Upgrade releases in full on December 14th. Playing the Open Testing build isn't necessary, but it helps us a lot to receive your feedback and reports - if you're interested, try it out!

How do I become an open tester?

There's no sign up or registration for becoming an open tester. If you own Oxygen Not Included and want to test the Tubular Upgrade preview, all you have to do is play the Open Testing build on Steam.

How do I play the open testing build?

Just switch your branch on Steam using the instructions below:
  • In Steam, click on Library > Games.
  • Scroll down to Oxygen Not Included.
  • Right-click and select Properties.
  • Go to the BETAS tab.
  • In the dropdown, select the name of the branch you want to play. In this case, the branch name is "tubular_upgrade_preview"
    This branch does not require a password.
  • In that same Properties window, go to the Local Files tab and press "Verify Integrity Of Game Cache."
  • Your game will be updated to the the previous branch.
  • Launch and play Oxygen Not Included

Also, for Linux users, don't forget to check out the Oxygen Not Included Early Access, now available on Linux!

Happy holidays!
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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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