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.
User reviews:
Very Positive (540 reviews) - 90% of the 540 user reviews in the last 30 days are positive.
Very Positive (2,580 reviews) - 91% of the 2,580 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 (16)

June 30

Rhymes with Play Dev Cast - Oxygen Not Included (Update Preview)

If you missed our latest Rhymes with Play Dev Cast stream on Twitch, you can check out the video-on-demand replay now!

Note: As the game is still in development, content shown in the update preview streams may change before going live on Steam Early Access.

Be sure to check out the Rhymes With Play Dev Cast on Twitch every Thursday at 3:30 PM (Pacific). Here's a handy tool to figure out what time that means for you:

66 comments Read more

June 5

[Game Update] HOTFIX - 219035 to 221865 (06/29/2017)

[Game Update] HOTFIX - 219035 (06/05/2017)

  • Duplicants will not put themselves or their living friends into a Tasteful Memorial if they're standing beside a corpse that's on its way to be buried
  • Duplicants should no longer sometimes teleport into the ground
  • Planter Box priority gets applied to the seed that gets planted inside of it
  • Planter Box gets applied to the plant inside of it when using copy settings
  • Microbe Musher/Cooking Station/Clothing Factory side screens should now properly update to show how many ingredients you have remaining
  • Microbe Musher/Cooking Station/Clothing Factory side screens should now properly reserve/unreserve resources when queuing single items to be fabricated
  • Remapping your panning keys in the main menu should no longer cause your camera to pan indefinitely when you start a new game
  • Clothing should no longer disappear after saving/loading. Unfortunately if you've already lost your existing clothing, you will have to make new ones
  • Air Filters should now only drop clay in 10kg chunks instead of dropping clay every second
  • Liquid overpressurization should now happen less frequently
  • Wheezeworts and Bristle Briars should no longer enter infinite plant/die loops when entombed
  • Massage Table settings can now be copied
  • Air Filters will be prioritized over sweeping if both are set to the same user priority
  • Plants should no longer get double the yield bonus from being fertilized
  • Fixed bug where some translations were not showing the proper color style
  • Loading a bad translation file should no longer crash the game
  • Materials in the build menu should no longer be obscured by the scroll bar

Hotfix 219330 - 06/12/2017
  • Game should no longer crash if Steam could not properly install the VC++ 2015 runtime
  • Transformers should draw the appropriate amount of energy from their parent circuit
  • Dupes should not interrupt delivering as frequently to perform their stress reactions
  • Dupes should once again run on manual generators to charge transformers
    ore should no longer fall through the ground
  • Deconstructing a generator with the power overlay up should no longer cause a crash

Hotfix 2197840 - 06/12/2017
  • Fixed a crash when loading save files where Transformers were connected to themselves

Hotfix 220294 - 06/19/2017
  • Generators with infinitely small amount of energy trying to charge a significant amount of batteries should no longer cause the game to freeze
  • Failing to initialize Steam should no longer crash
  • Fix for cancel/deconstruct filters being unusable when certain
  • joysticks/gamepads were connected
  • Framerate when using the priority overlay should be significantly better
  • Framerate in bases with lots of sweep jobs should be better

Hotfix 220993 - 06/22/2017
  • Fix for sweep chores sometimes not being properly prioritized

Hotfix 221295 - 06/26/2017
  • Dupes should now change valve settings even if the valve is blocked
  • Air scrubber should now use the water it has in storage even if the pipe it's connected to is empty
  • Air scrubber should no longer absorb CO2 if it doesn't have enough water to process it
  • Air scrubber should only use power when processing CO2
  • Air scrubber should no longer over overfill it's storage with CO2

Hotfix 221697 - 06/28/2017
  • Algae Terrariums should once again absorb an appropriate amount of water from the world(if available) so that dupes don't have to manually deliver to them
  • Algae Terrariums no longer absorb infinite water(this was fixed in the last patch but wasn't called out)
  • Air Scrubbers that were at max capacity before Monday's hotfix should work once again though they will take a while to process all the CO2 they've accumulated in their storage

Hotfix AU-221865 - 06/29/2017
  • Fixed another issue dealing with Air Scrubbers not saving/loading correctly

126 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

    • 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

What Curators Say

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Very Positive (540 reviews)
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