Oxygen Not Included
Released Jul 2019
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.
96% positive · 144K reviews
Not yet
Released, but still in active development
High confidence
Active Development
Not yet
Released, but still in active development
High confidence
Active Development
Where to buy
Steam $7.49 $24.99 −70%
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Evaluation
Oxygen Not Included launched out of Early Access on July 30, 2019 and has been actively supported ever since. The game's update history shows a clear and sustained pattern of paid DLC releases alongside regular free updates.
In February 2024, Klei explicitly announced a return to "content-focused DLCs" after a period of free updates, and they have since delivered four paid Planet Pack DLCs at a consistent cadence: The Frosty Planet Pack (July 18, 2024), The Bionic Booster Pack (December 12, 2024), The Prehistoric Planet Pack (June 12, 2025), and most recently The Aquatic Planet Pack (June 11, 2026). This establishes an approximately 6-month cadence between major content releases. The most recent DLC launched just three days before today's date (June 14, 2026), placing the game squarely within an active development window.
In addition to paid DLC, Klei has continued shipping free quality-of-life updates — the November 2025 update, for example, added new critter morphs, a new story trait, new buildings, and performance improvements entirely for free.
No specific future content has been announced at this time, but given the consistent pace of releases and no developer statement indicating the end of content development, the game is clearly in an ongoing update cycle. All seven DLC listed on the store are released; no unreleased entries exist.
Evidence
The Aquatic Planet Pack DLC launched on June 11, 2026, adding a flooded starting world, new biomes, critters, buildings, and swimming mechanics for Duplicants.
The Prehistoric Planet Pack DLC launched June 12, 2025, adding a new prehistoric world with dino-like critters, a meteor impact threat, and new gameplay mechanics.
Content
7 of 7 released · no outstanding content
Media
Details
Developer
Publisher
Klei Entertainment
Achievements
51
Platform
Windows, macOS, Linux
Controller
—
Steam Deck
Verified
Players
Single-player
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.
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.
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.
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.
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.
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.
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.
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.
Summon new worlds with a push of a button. Experience tons of untamed space rocks, then suffocate to death in them!
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!Are these done yet?
Last evaluated Jun 14, 2026
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