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 (1,231 reviews) - 94% of the 1,231 user reviews for this game are positive.
Release Date: 18 May, 2017

Sign in to add this item to your wishlist, follow it, or mark it as not interested

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/”
Read more

Buy Oxygen Not Included


Recent updates View all (13)

18 May

Oxygen Not Included Early Access Now Available


Originally posted by Cheerio on the official forums

Hi gang! It's May 18th and that means it's time for the official Early Access release of Oxygen Not Included!

As we exit our Alpha period we'd like to give a big huge thank-you to everyone who tested, streamed, told friends about or just downright played our game. The response we received was overwhelming and on a much bigger scope than we had anticipated, and we couldn't be more grateful for it. Thank-you thank-you thank-you!

Since then we've been busy updating and expanding, and are happy to say that Oxygen Not Included has seen the implementation of tons of new buildings, resources, overlays and systems since our pre-release back in February, thanks in large part to your feedback... and it's only going to get bigger! Our current plan is to fully support OSX in the near future, and continue building and developing well into 2018.

The Early Access of Oxygen Not Included is now available on Steam for $24.99. Players who own an existing Klei game on Steam will receive a 20% loyalty discount when buying the game, and if you bought the Oxygen Not Included Alpha, you won't have to buy it at all! You already own it.

Agricultural Upgrade

We mentioned in our last post that a new Agricultural Upgrade was in the works and would be launching alongside Early Access; well, here it is!

This update has focused mainly on the introduction of new farming systems, making them more complex and rewarding. These changes should require you to be more attentive to your crops and expend more resources in order to raise them, but ultimately allow you to reap the most benefit from their harvests.
Farming Features
  • New Items, Buildings and Recipes: Discover new plants, buildings and yummy cooking recipes. Farm food and flavour-enhancing spices, then cook them into culinary delights for your Duplicants to enjoy.
  • Improved Crop Tending: Build pipe systems and irrigate your crops using new farm plots. Monitor pressure, temperature, fertilization and irrigation to keep your crops happy and healthy.
  • New Farming Systems: The Harvest Rating Point system now allows you to increase the yield of your harvest by meeting ideal growing conditions for crops. Reach 100 Harvest Rating and your plants will yield tons of extra kcal and new seeds for farm expansion.
  • Consumables Screen: Control your colony's eating habits with the new Consumables Screen. Dupes now have Food Quality Expectations, so try to feed them foods they like!
And hey, farming's not all that's new. We've also been adding new avenues for players to generate power and manage the day-to-day tasks within their colonies

Some of these new features include:
  • Power Control: Manage your power systems more effectively and prevent overloads and meltdowns with the new Power Transformer
  • New Energy Source: Natural Gas Geysers have tons of power to harness using the Natural Gas Generator, so long as you don't mind the smell.
  • Hydro and Atmo Switches: Automate your systems with pressure-detecting liquid and gas switches.
  • Quality of Life Improvements:
    • Storage and Planter Copy Settings: Cut down on time spent setting storage filters and planting seeds by copying & painting filter settings.
    • Breaktimes: No more assigning Dupes to Massage Tables with the new
    • Breaktime Policy screen. Set the stress levels at which they should stop working with the Max Stress slider, then tell them when they should get back to work with Min Stress.
    • Default Job Restrictions: Use the Default column of the Jobs Screen to set job restrictions for new Dupes. Newly printed Dupes will come out with these settings already assigned.
    • Steam Workshop Language Packs: Subscribe to different fan made translations to play Oxygen Not Included in the language of your choice.
      Framerate improvement, reduced load times, UI changes & more
  • Screenshot Mode: Alt-S will now allow you to enter screenshot mode. Zoom out and take a picture of your entire base, then show it to all your friends.
Finally, we've added a handful of new traits and stress responses to Duplicant behaviour to give them new ways to react to stress.
  • Say hello to Binger Eater and Ugly Crier Dupes!

Don't worry, he's crying for joy. Probably.

A big thank you once again to everyone who played, tested or supported the game! Your feedback has been such a huge help to us and we look forward to hearing more from you throughout Early Access.

See you all in space!

Full Patch Notes

For more details, see the post on the official forums

Hotfix 217529
  • fixed crash when using the consumables/jobs screen
  • fixed crash when clicking on planter boxes that were imported from a thermal upgrade save
Hotfix 217565
  • fixed a crash when using the consumables screen in a localized language
  • fixed a crash when going back to the main menu
  • fixed a crash when dupes got infected with certain diseases
Hotfix 217794
  • fixed a crash that could occur when placing a dupe in a grave
  • fixed a crash that could occur when going back to the main menu

128 comments Read more

17 May

Alpha Appreciation

Originally posted by Bigfoot on the official forums.

Hey everyone!

As we enter Early Access, the Alpha price of $19.99 will be retired and the base price will become $24.99. In addition to this, we will be providing a 20% loyalty discount for all Klei game owners, so for these players the game will continue to be $19.99.

However, while adjusting the prices, we realized that certain currencies had odd Steam pricing tiers that were non-linear, and in conjunction with loyalty pricing, we found that Early Access players could end up getting the game cheaper than our Alpha fans.

We think that’s not great, as we really appreciate players taking the chance on us for Alpha. Thus as a thanks for supporting us, we will be providing a free gift for ALL our Alpha players.

On July 12, all players who purchased the alpha version of the game will be given the opportunity to choose a gift from a selection of our top selling games. If you already own all of the games (thanks for your support!) then you will be able to choose a gift box containing rare Don't Starve Together skins, with a guarantee of at least 1 elegant skin. This offer will only be available to Alpha players who purchased the game at the original price and will not apply to purchases made during Early-Access.

We will have more details about this offer when it’s available. For now, you can head over here and let us know if you would like to be notified when your gift is ready.

Thank you so much for playing Oxygen Not Included, your feedback has been amazingly helpful!

435 comments Read more
See all discussions

Report bugs and leave feedback for this game on the discussion boards

Language Packs

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

39 Curators have reviewed this product. Click here to see them.
Customer reviews Learn More
Very Positive (1,231 reviews)
Review Type

Purchase Type


Display As:

(what is this?)
429 reviews match the filters above ( Very Positive)
There are no more reviews that match the filters set above
Adjust the filters above to see other reviews
Loading reviews...